Prospektyvusis dviejø ir vieno pluoðto priekinio kryþminio raiðèio rekonstrukcijos metodø palyginimas

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1 110 Prospektyvusis dviejø ir vieno pluoðto priekinio kryþminio raiðèio rekonstrukcijos metodø palyginimas Rimtautas Gudas, Alfredas Smailys, Kristina Vostrugina, Ramûnas Tamoðiûnas 1, Donatas Simonaitis 1, Romas Jonas Kalesinskas Kauno medicinos universiteto Ortopedijos ir traumatologijos klinika, 1 Anesteziologijos klinika Raktaþodþiai: priekinis kryþminis raiðtis, sporto traumos, vieno pluoðto rekonstrukcija, dviejø pluoðtø metodika. Santrauka. Tyrimo tikslas. Palyginti klinikiniø ir radiologiniø tyrimø duomenis po dviejø pluoðtø ir vieno pluoðto priekinio kryþminio raiðèio rekonstrukcijos sportininkams, panaudojant ðlaunies lenkiamøjø sausgysliø (semitendinosus ir gracillis ST/G) autotransplantus. Tirtøjø kontingentas tyrimo metodai. Á tyrimà átraukëme 70 pacientø, kurie patyrë vienos kojos priekinio kryþminio raiðèio plyðimà. Pacientai ávertinti praëjus vidutiniðkai 24 mënesiams po operacijø. Tiriamosiose grupëse buvo po 35 pacientus, kuriems buvo atlikta dviejø pluoðtø arba vieno pluoðto priekinio kryþminio raiðèio rekonstrukcija. Pacientø amþiaus vidurkis 24,7 metø (18 35 metø). Prieð operacijas nebuvo skirtumø tarp analizuojamø grupiø vertinant tiriamøjø amþiø, lytá, traumos ir operacijos laikà, traumos pobûdá. Abiejø grupiø pacientams taikytos vienodos pooperacinës reabilitacijos programos. Chirurginio gydymo rezultatai vertinti remiantis klinikiniu iðtyrimu, tarptautine kelio sànario vertinimo sistema (angl. International Knee Documentation Committee (IKDC)), Tegnerio aktyvumo vertinimo skale ir izokinetiniu raumens jëgos atkûrimo ávertinimu. Rezultatai. 32 (91,4 proc.) pacientams, kuriems atlikta dviejø pluoðtø priekinio kryþminio raiðèio rekonstrukcija, ir 30 (85,7 proc.) pacientø, kuriems atlikta vieno pluoðto priekinio kryþminio raiðèio rekonstrukcija, nustatyti geri ir labai geri rezultatai vertinant IKDC sistema. Taèiau, vertinant IKDC sistema, nenustatyta statistiðkai reikðmingo skirtumo tarp ðiø pacientø grupiø (P=0.87). Vidutinis Tegnerio aktyvumo ávertis sudarë 8,0 ir 8,1 atitinkamose grupëse. Iðvada. Remiantis mûsø tyrimo duomenimis, statistiðkai reikðmingo skirtumo tarp dviejø ir vieno pluoðto priekinio kryþminio raiðèio rekonstrukcijos metodø nenustatyta. Ávadas Dël maþesnës donorinës vietos sindromo tikimybës vis daþniau priekinio kryþminio raiðèio (PKR) rekonstrukcijos operacijos sportininkams atliekamos panaudojant ðlaunies lenkiamøjø sausgysliø transplantatus, kurie fiksuojami tirpiaisiais sraigtais viename arba dviejuose kaulo kanaluose (1 4). Kryþminio raiðèio transplantà fiksuojant viename kanale, atliekama vieno pluoðto, o fiksuojant dviejuose kanaluose dviejø pluoðtø rekonstrukcija. Dviejø pluoðtø PKR (DP- PKR) rekonstrukcija anatomiðkai tiksliau atkuria plyðusá kryþminá raiðtá, taèiau dël metodikos sudëtingumo klinikinëje praktikoje taikoma labai retai. Atliekant vieno pluoðto priekinio kryþminio raiðèio (VP- PKR) rekonstrukcijà, labai svarbu transplantà ásodinti á anatomiðkai bei funkciðkai labai tikslià kelio sànario vietà. To nepadarius, PKR rekonstrukcija neatkurs stabilaus kelio sànario anatomijos, nors pacientui po tokios operacijos bus ðiek tiek geriau, bet aktyvios fizinës ir kontaktinës veiklos sportininkas tæsti negalës. Todël pasaulinëje praktikoje vis daþniau atliekama DP-PKR rekonstrukcija, kuri teoriðkai turëtø bûti pranaðesnë uþ standartinæ vieno pluoðto PKR rekonstrukcijà. Taèiau nëra klinikiniø tyrimø, árodanèiø vieno ar kito PKR rekonstrukcijos metodo pranaðumà. Ðio tyrimo tikslas palyginti klinikinius ir radiologinius rezultatus sportininkams po PKR dviejø pluoðtø ir vieno pluoðto rekonstrukcijos. Pirminiai ðio tyrimo tikslai iðtirti iki traumos fizinio aktyvumo lygio atkûrimà bei DP-PKR rekonstrukcijos galimà pranaðumà prieð áprastà vieno pluoðto PKR rekonstrukcijà. Tirtøjø kontingentas ir tyrimo metodai Á tyrimà átraukti pacientai, kuriems nuo 2005 iki 2007 m. KMUK Ortopedijos ir traumatologijos klinikos Sporto traumø ir artroskopijos sektoriuje atliktos Adresas susiraðinëti: R. Gudas, KMU Ortopedijos ir traumatologijos klinika, Eiveniø 2, Kaunas El. paðtas: rimtautas.gudas@kmuk.lt

2 Prospektyvusis dviejø ir vieno pluoðto priekinio kryþminio raiðèio rekonstrukcijos metodø palyginimas lentelë. Sporto ðakos pagal tiriamøjø pacientø grupes Sporto ðakos DP-PKR VP-PKR grupë (n=35) grupë (n=35) Futbolas 7 6 Motokrosas 2 4 Krepðinis Tinklinis 6 5 Tenisas 1 2 Rankinis 5 4 dviejø ar vieno pluoðto PKR rekonstrukcijos. Ið viso ávertinti 70-ties pacientø PKR plyðimø chirurginio gydymo rezultatai (po 35 pacientus kiekvienoje grupëje). Pacientø pasiskirstymas pagal sporto ðakas pateikiamas pirmoje lentelëje. Pradiniai abiejø grupiø pacientø duomenys statistiðkai nesiskyrë (P=0,83) (2, 3 lentelës). DP-PKR grupëje laikotarpis nuo traumos iki operacijos buvo 5,2 savaitës (intervalas nuo 3 iki 12 savaièiø), o VP-PKR grupëje 5,4 savaitës (intervalas nuo 3 iki 14 savaièiø) (P=0,71). Átraukimo á tyrimà kriterijai: 1) izoliuota pirminë priekinio kryþminio raiðèio (PKR) rekonstrukcija (áskaitant dalinæ menisko rezekcijà ir menisko susiuvimà); 2) operacijos metu nenustatyta didesnio nei I kremzlës paþeidimo; 3) normalus antrosios kojos kelio sànarys; 4) traumos metu sportininkas dalyvaudavo vietinëse, nacionalinëse ar tarptautinëse varþybose; 5) ne vyresni nei 35 metø sportininkai; 6) ne ilgesnis nei 3 mënesiø laikotarpis nuo traumos iki operacijos. Á tyrimà nebuvo átraukti pacientai, kurie: 1) anksèiau buvo patyræ bet kurio kelio traumà arba jau buvo padarytos operacijos; 2) patyrë osteoartrità arba uþpakalinio kryþminio raiðèio (UKR) plyðimà, ðoninio raiðèio (ÐR) plyðimà, uþpakalinio ðoninio komplekso (UÐK) plyðimà arba III vidinio kolateralinio raiðèio (VKR) plyðimà; 3) patyrë II IV sànario krezmlës paþeidimà. Operacinë technika ir pooperacinë reabilitacija Atlikus artroskopinæ diagnostikà, o prireikus menisko ir kremzlës sutvarkymo procedûras, per 4 cm ilgio ástriþà pjûvá, vidiniame blauzdikaulio pavirðiuje, buvo paimtas ðlaunies lenkiamøjø sausgysliø (semitendinosus ir gracillis ST/G) autotransplantatas. Transplantas standartiðkai paruoðtas remiantis dviejø ar vieno pluoðto metodika. Dviejø pluoðtø priekinio kryþminio raiðèio rekonstrukcija Paimtas ðlaunies lenkiamøjø sausgysliø transplan- 2 lentelë. Pagrindiniai duomenys atliekant PKR rekonstrukcijas Duomenys DP-PKR VP-PKR grupë (n=35) grupë (n=35) Amþius (m.) Amþiaus vidurkis 24,8 25,1 (16 iki 35) (16 iki 35) Lytis Vyrai Moterys 11 8 Menisko plyðimas Vidinio 11 9 Iðorinio 2 2 Vidinio ir iðorinio 2 1 Menisko operacijos Dalinis menisko paðalinimas 5 8 Dalinis iðorinio menisko paðalinimas 1 0 Dalinis vidinio ir iðorinio meniskø paðalinimas 1 0 Vidinio menisko susiuvimas 6 4 Iðorinio menisko susiuvimas 1 0 Vidinio ir iðorinio meniskø susiuvimas 1 0 Vidinio menisko susiuvimas ir dalinis iðorinio menisko paðalinimas 1 0 P reikðmë P>0,05 P>0,05 P>0,05 P>0,05

3 112 Rimtautas Gudas, Alfredas Smailys, Kristina Vostrugina ir kt. 3 lentelë. Kelio sànario stabilumo ávertinimas grupëse Lachmano testo duomenys DP-PKR VP-PKR X (proc.) X (proc.) P reikðmë Iki operacijos 0, (0) 0 (0) (7) 4 (14) (93) 31 (86) Ið viso 35 (100) 35 (100) Praëjus vieneriems metams po operacijos 0, (33) 4 (21) (54) 9 (47) 2+ 3 (13) 4 (21) 3+ 0 (0) 2 (11) Ið viso 24 (100) 19 (100) VP-PKR vieno pluoðto priekinis kryþminis raiðtis; DP-PKR dviejø pluoðtø priekinis kryþminis raiðtis. tas. Sausgyslës paruoðtos atskirai persiuvant jas specialiàja siûle. Visos keturios sausgysliø dalys apsiûtos atskirais dygsniais Vicryl-2,0 siûlu. Priekinës vidinës dalies ðlaunies lenkiamøjø sausgysliø transplantato diametras 7,2 mm (7 8 mm), o uþpakalinës ðoninës dalies 5,1 mm (5 6 mm). Pirmiausia iðgræþiamas blauzdikaulinis kanalas, viela veriama kaip galima arèiau prie vidinio kolateralinio raiðèio (VKR). Artroskopinis nukreipiklis buvo ákiðamas á kelio sànará per priekiná vidiná áëjimà ir nustatomas 45 kampas. Koronarinëje plokðtumoje blauzdikaulinis kanalas iðgræþiamas 60 kampu. Po to, kai ávertinamas ankðtumo testas, priekinëje tarpkrumplinëje áduboje ir vidinëje iðorinio ðlaunikaulio krumplio sienoje suformuojami priekinis vidinis ir uþpakalinis ðoninis ðlaunikaulio kanalai. Siekiant sumaþinti sinovialinio audinio sukeliamà uþdegiminæ reakcijà, su elektromechaniniu skutekliu paðalinamos laisvos atplaiðos po kanalø græþimo. Ðlaunikaulinë Kirðnerio tipo viela atitinkamu nuokrypio kampu ákiðama á kelio sànará vos keletà milimetrø nuo uþpakalinës sienos (priklausomai nuo transplanto diametro), ties 9 ir 10,30 valandø padëtimis deðiniajam keliui, tarp 2 ir 3,30 valandø padëtimis kairiajam keliui, atitinkamai. Ðlaunikaulinis kanalas iðgræþiamas iki 30 mm gylio priekiniam vidiniam kanalui ir mm uþpakaliniam ðoniniam kanalui, kelio sànará sulenkus kampu. Transplantatas buvo átemptas apytiksliai 40 N jëga, per 10 minuèiø. Kelias keletà kartø buvo sulenkiamas ir iðtiesinamas, transplantato abu galai fiksuoti naudojant besirezorbuojamuosius sraigtus sulenkus kelio sànará 20 neutralioje kelio sànario pasukimo projekcijoje. Vieno pluoðto priekinio kryþminio raiðèio rekonstrukcija Sausgyslës transplanto diametras buvo nuo 7 10 mm (vidutiniðkai 8,7 mm). Iðgræþti kanalai suformuoti, naudojant nukreipiklius. Ðlaunikaulinis kanalas suformuojamas ið þemutinio priekinio vidinio artroskopinio áëjimo, ties priekinio vidinio ir uþpakalinio ðoninio pluoðtø riba, naudojant specialøjá nukreipiklá. Ðlaunikaulinë Kirðnerio tipo viela ákiðama ir patalpinama kaip galima arèiau uþpakalinës sienos. Ðlaunikaulinis kanalas iðgræþiamas iki 30 mm gylio, ligonio kelio sànará sulenkus kampu. Po to iðgræþiamas blauzdikaulinis kanalas, pozicionuojant Kirðnerio tipo vielà kaip galima arèiau prie vidinio koloteralinio raiðèio (VKR). Artroskopinis nukreipiklis pritvirtinamas 45 kampu, kanalas iðgræþiamas 60 kampu. Transplantatas fiksuojamas taip pat kaip ir dviejø pluoðtø rekonstrukcijos metu, t. y. besirezorbuojamaisiais sraigtais. Reabilitacija Pooperacinë slauga ir reabilitacinë programa abiejø pacientø grupiø buvo vienoda. Pirmàjà savaitæ buvo naudojami ekstenziniai kelio átvarai ir dvi savaites ribojamas fizinis krûvis. Po savaitës buvo nuimtas átvaras ir pradëtas palaipsnis kelio lenkimas, keturgalvio ðlaunies raumens treniravimas, po to ðlaunies lenkiamøjø raumenø izometriniai pratimai. Po penkiø savaièiø pacientams buvo leidþiama izotoninë ðlaunies lenkiamøjø raumenø kontrakcija, ðlaunies atitraukimas-pritraukimas, plaukimas. Po aðtuoniø savaièiø pacientai buvo skatinami normaliai judëti, tiesti kelio sànará tol, kol nebus pasiprieðinimo, sulenkti iki ir su pasiprieðinimu minti stacionarø dviratá. Po 12 savaièiø buvo neribojamas izotoninis keturgalvio

4 Prospektyvusis dviejø ir vieno pluoðto priekinio kryþminio raiðèio rekonstrukcijos metodø palyginimas 113 ðlaunies raumens stiprinimas. Praëjus 6 10 mën. po operacijos, pacientui buvo leidþiama palaipsniui aktyviai sportuoti, o po vieneriø metø nebuvo taikoma jokiø apribojimø. Klinikinis ávertinimas ir chirurginio gydymo rezultatø analizë Prieð operacijà ir po operacijos praëjus 3, 6 mën. ir vieneriems metams, ávertinti klinikiniai kelio funkcijos ir stabilumo parametrai. Patikrintas stabilumas, kuris, remiantis IKDC rekomendacijomis, suskirstytas á tris laipsnius: lengvas 0 2 mm skirtumas nuo sveikos kojos kelio sànario, vidutinis 3 5 mm skirtumas, ryðkus skirtumas daugiau kaip 5 mm. Vertinant klinikinius rezultatus, buvo analizuojamas blauzdikaulio poslinkis bei aktyvaus ir pasyvaus kelio sànario judesio amplitudë (vienu atveju pacientas atliko judesá pats, kitu tyrëjas), poþymiai buvo klasifikuojami kaip nëra nukrypimo, lengvas nukrypimas arba praslydimas, vidutinis nukrypimas arba panirimas, ryðkus nukrypimas arba ryðkus panirimas. Aukðèiausias raumens izokinetinio susitraukimo daþnis maksimalaus kelio iðtiesimo ir sulenkimo metu buvo matuojamas kritiniuose taðkuose, skirtingais greièiais (60 k/sek., 180 k/sek. ir 360 k/sek.). Chirurginio gydymo rezultatai vertinti naudojant IKDC ir Tegnerio aktyvumo vertinimo skales. Kanalo diametrai buvo matuojami kanalo pradþioje ir plaèiausioje kanalo dalyje. Siekiant ávertinti koreliacijà, kiekvieno paciento kanalo iðplatëjimo laipsnis buvo lyginamas su individualiø IKDC ir Tegnerio aktyvumo skaliø áverèiais. Siekiant ávertinti iðgræþtø kanalø padëtá, visiems pacientams buvo atliktos priekinës ir ðoninës kelio sànario rentgenogramos. Statistinë analizë Statistinë analizë atlikta naudojant statistinæ duomenø bazæ Statistica-7. Parametriniams duomenims tarp grupiø vertinti naudotas Stjudento (t) testas. Neparametriniams duomenims vertinti taikytas chi kvadrato (χ 2 ) testas (tarp grupiø). Maþiausias reikðmingumo lygis P=0,05. Vienas pagrindiniø áverèiø buvo IKDC balas. 10-ties balø skirtumas laikomas kliniðkai svarbiu skirtumu tarp tiriamøjø grupiø. 5 proc. I tipo paklaidos ir 80 proc. II tipo paklaidos tikimybë reiðkia, kad pakankamas pacientø skaièius, norint daryti statistiðkai reikðmingas iðvadas, buvo 64, o mes tyrëme 70 pacientø. Rezultatai Ikioperacinës pacientø bûklës ávertinimas Palyginus abiejø grupiø pacientø duomenis iki operacijos, statistinio skirtumo nenustatyta. Buvo lyginama: lytis, amþius, laikotarpis nuo traumos iki operacijos, nestabilumo testas, sporto ðaka, sportinis aktyvumas, IKDC balø ávertis, izokinetiniai raumenø susitraukimo duomenys bei Tegnerio aktyvumo ávertinimo skalës áverèiai (1 3 lentelës). Abiejø grupiø pacientams atlikta 19 daliniø vidinio menisko paðalinimø ir keturi daliniai ðoninio menisko paðalinimai. Dviem pacientams atlikti vidinio ir ðoninio menisko daliniai paðalinimai. 12 pacientø kartu su PKR rekonstrukcija atlikta menisko susiuvimo operacija. Statistinio skirtumo tarp papildomai su PKR atliktø meniskø procedûrø nebuvo (P=0,13). Nebuvo skirtumo ir tarp menisko chirurginio paðalinimo abiejose grupëse (P=0,8). Keturiems kiekvienos grupës pacientams chirurginiø procedûrø metu aptikta I sànarinio pavirðiaus paþeidimø. Ðeðiems pacientams diagnozuoti ðeði vidinio kolateralinio raiðèio plyðimai, dviem DP-PKR grupëje ir keturiems VP-PKR grupëje. Judesiø amplitudë Praëjus vieneriems metams po operacijos, judesiø amplitudë grupëse nesiskyrë (P=0,754). Praëjus vieneriems metams po operacijos, trims pacientams (dviem DP-PKR ir vienam VP-PKR) nustatytas nuo III iki V kelio sànario iðtiesimo deficitas. Abiejose grupëse judesiø amplitudë buvo , atitinkamai (skirtumas statistiðkai nereikðmingas). Kelio sànario stabilumas Atlikus klinikiná kelio stabilumo ávertinimà ikioperaciniu laikotarpiu, tarp grupiø statistinio skirtumo nenustatyta. Ávertinus kelio stabilumà praëjus vieneriems metams po PKR rekonstrukcijø, statistiðkai reikðmingo skirtumo nenustatyta (P=0,59). Praëjus vieneriems metams po operacijø, abiejø grupiø pacientams nustatytas statistiðkai nereikðmingas kelio sànario Lachmano iðtyrimo testo reikðmës padidëjimas (P=0,45). Remiantis Lachmano testo duomenø analize, nenustatyta statistiðkai reikðmingo skirtumo tarp grupiø pooperaciniu laikotarpiu ir praëjus 3 mën., 6 mën. bei 12 mën. po operacijø. Nei iðkart po operacijos, nei po vieneriø metø stebëjimo Pivot Shif testo rezultatai abiejose grupëse nesiskyrë (P=0,54) (3, 4 lentelës). IKDC ávertinimas Ikioperaciniu laikotarpiu vertinant pacientø bûklæ pagal IKDC sistemà, skirtumø tarp grupiø nenustatyta. Po vieneriø metø DP-PKR grupëje IKDC klinikinis ávertis pasiekë 46 proc. (15) A lygio, 48 proc. (16) B lygio, 6 proc. (3) C lygio ir 1 (0 proc.) D lygio. VP-

5 114 Rimtautas Gudas, Alfredas Smailys, Kristina Vostrugina ir kt. 4 lentelë. Galutinis IKDC ávertinimas Testai DP-PKR VP-PKR grupë (n=35) grupë (n=35) Tegnerio ávertinimas, P=0,25 iki traumos 7,5 (3 9) 7,5 (3 10) po vieneriø metø 6,5 (3 9) 6,7 (2 9) IKDC, P=0,617 A grupë B grupë C grupë 5 3 D grupë 1 0 VP-PKR vieno pluoðto priekinis kryþminis raiðtis; DP-PKR dviejø pluoðtø priekinis kryþminis raiðtis. PKR grupëje 19 proc. (6) pasiekë A lygio, 66 proc. (21) B lygio, 12 proc. (4) C lygio, 3 proc. (1) D lygio. IKDC vertinimo duomenimis, statistiðkai reikðmingo skirtumo tarp grupiø nenustatyta (P=0,617) (3, 4 lentelës). Fizinio aktyvumo ir sportinës veiklos atkûrimas Ið 70 pacientø, kuriems buvo atlikta PKR rekonstrukcija, buvusá fizinio aktyvumo lygá ir sportinæ veiklà atgavo 60 (85 proc.), á þemesná fizinio aktyvumo lygá toje paèioje sporto ðakoje perëjo 9 (10 proc.) ir 1 (5 proc.) visiðkai nutraukë sportinæ veiklà. 29 ið 35 pacientø (83 proc.) ið DP-PKR grupës ir 26 ið 35 pacientø (74 proc.) ið VP-PKR grupës atitinkamai po 6,8 mën. (5 11 mën.) ir po 8,1 mën. (7 12 mën.) atgavo ankstesná sportinës veiklos aktyvumo lygá. Vidutinis Tegnerio aktyvumo skalës ávertis DP-PKR ir VP-PKR grupëse, praëjus vieneriems metams, buvo atitinkamai 8,0 ir 7,1 (P=0,07). Taèiau DP-PKR grupës pacientai anksèiau sugráþo á aktyvià sportinæ veiklà palyginus su VP-PKR grupe (P=0,05).Vertinant sportininkus, kurie gráþo á ankstesnæ sportinæ veiklà, ir tie, kurie neatgavo buvusio fizinio aktyvumo lygio, IKDC ir Tegnerio aktyvumo skalës áverèiai reikðmingai nesiskyrë (P=0,25) (3, 4 lentelës). Ne visi pacientai, kuriø IKDC ávertis buvo A ar B grupëse, turëjo aukðtesná Tegnerio aktyvumo skalës áverèio balà. Izokinetinis raumenø ávertinimas Siekiant ávertinti funkcinæ kelio sànario bûklæ, matuojant Cybex dinamometru, atliktas izokinetinis raumenø susitraukimo jëgos matavimo testas. Analizuojant izokinetiná didþiausià raumenø susitraukimà iki operacijos ar praëjus vieneriems metams po operacijos, skirtumø tarp grupiø nenustatyta (P=0,24). Po visø PKR rekonstrukcijø praëjus 6,2 mën., uþfiksuotas izokinetinis raumenø susitraukimo jëgos deficitas, kuris sumaþëjo praëjus 12 mën. po operacijos. Radiologinio tyrimo rezultatai Dviejø pluoðtø PKR rekonstrukcijos grupëje ðlaunikaulinio kanalo padëtis ðoninëje rentgenogramoje (n=35) (po operacijos): dviem pacientams III zonoje, 33 IV zonoje; atitinkamos padëtys vieno pluoðto uþpakalinio ðoninio pluoðto grupëje buvo 1 ir 34 (P=0,87). Blauzdikaulinio kanalo padëtis DP-PKR grupëje: vienam pacientui I zonoje, 34 II zonoje. Atitinkamos padëtys VP-PKR grupëje buvo 0 ir 32 (P=0,87). Palyginus IKDS áverèius ir kelio sànario stabilumà su iðgræþtø kanalø iðsidëstymu, statistiðkai reikðmingo skirtumo nenustatyta (P=0,47). Pirminis iðgræþtø kanalø diametras DP-PKR grupëje buvo 6,2 mm ir 5,4 mm, VP-PKR grupëje 8,7 (7 10 mm). Atlikus rentgenogramas po vieneriø metø, kanalø diametras praplatëjo iki 1,1 (0 1,4 mm) ir iki 1,4 (0 2,0 mm) DP-PKR ir VP-PKR grupëse, atitinkamai (P=0,64). Kanalo praplatëjimas nekoreliavo nei su padidëjusiu kelio stabilumu, nei su IKDC skale abiejose grupëse. Rezultatø aptarimas Iki ðiol maþai tyrinëtas fiziðkai aktyviø sportininkø gráþimas á buvusá fizinio aktyvumo lygá po atliktos priekinio kryþminio raiðèio rekonstrukcijos. Ðio tyrimo duomenimis, 97 ir 85 proc. atvejø pacientams po dviejø pluoðtø PKR rekonstrukcijø nustatytas normalus arba beveik normalus IKDC ávertinimo balas. Naudojant abu PKR rekonstrukcijos metodus, pasiekta vienodø kelio sànario funkcijos pagerëjimo ir stabilumo rezultatø. Nors mûsø rezultatai neparodë statistiðkai reikðmingo klinikiniø rezultatø skirtumo po vieneriø metø, taèiau dviejø pluoðtø PKR rekonstrukcija uþtikrina stabilesná kelio sànará po PKR rekonstrukcijos, nors klinikiniai IKDC anketos duomenys abiejose grupëse nesiskyrë. T. Muneta su kolegomis nenusta-

6 Prospektyvusis dviejø ir vieno pluoðto priekinio kryþminio raiðèio rekonstrukcijos metodø palyginimas 115 të statistiðkai reikðmingo skirtumo tarp vieno ir dviejø pluoðtø PKR rekonstrukcijos, nors jie priekinio kryþminio raiðèio transplantà fiksavo kitokiu bûdu nei mes. Taèiau tyrëjai nustatë, kad po dviejø pluoðtø PKR rekonstrukcijos kelio sànario rotacija yra stabilesnë nei po vieno pluoðto rekonstrukcijos (5). Kiti tyrëjai taip pat nerado statistiðkai reikðmingø skirtumø tarp ðiø dviejø PKR rekonstrukcijos metodikø (3, 6 12). H. Ross ir kt., atlikæ atsitiktiniø imèiø tyrimà, 68 pacientams (po ðeðis sportininkus kiekvienoje grupëje) nenustatë statistiðkai reikðmingo skirtumo tarp dviejø grupiø praëjus 12 mën. po operacijos (12). Kitas atsitiktiniø imèiø tyrimas, kurá atliko A. Harilainen ir kt. (9), taip pat nenustatë statistiðkai reikðmingo skirtumo tarp grupiø nei po vieneriø, nei po dvejø stebëjimo metø (9). C. Fabbriciani ir kt. iðtyrë regbio þaidëjus, kuriems buvo atlikta PKR rekonstrukcija su ðlaunies lenkiamøjø sausgysliø transplantu. Praëjus dvejiems metams po operacijø, nustatytas 8,2 balo Tegnerio aktyvumo ávertis (14). Pagal mûsø reabilitacijos protokolà, pacientams buvo leista atnaujinti neribojamà fiziná aktyvumà praëjus 6 ir 10 mën. po operacijos. 29 ið 33 (88 proc.) DP-PKR grupës pacientø ir 26 ið 32 (81 proc.) VP- PKR grupës pacientø sëkmingai sugráþo á buvusá sportinës veiklos aktyvumo lygá po 6,8 mën. ir po 8,1 mën., atitinkamai. Mes pastebëjome tendencijà, kad anksèiau á buvusià sportinæ veiklà sugráþo DP-PKR grupës pacientai, todël manome, kad taip galëjo bûti dël geresnio rotacinio kelio sànario stabilumo. Taèiau tikros prieþastys vis dar neaiðkios. Biomechaniniai tyrimai parodo, kad dviejø pluoðtø PKR rekonstrukcija uþtikrina didesná rotaciná stabilumà nei vieno pluoðto rekonstrukcija, nors visi palyginimai atlikti taikant vieno priekinio vidinio pluoðto PKR rekonstrukcijà, kuri nëra anatominë, todël su mûsø tyrimo duomenimis palyginti neámanoma (2, 3, 5, 6, 16 20). Palyginus su kitais tyrimais (1, 4, 7, 9, 10, 12 15, 21 30), mûsø tyrime laikas tarp traumos ir operacijos buvo trumpesnis (3,2 savaitës DP-PKR grupëje ir 3,4 savaitës VP-PKR grupëje). Ðis veiksnys, taikant adekvaèià reabilitacijà, taip pat galëjo turëti teigiamos átakos sugráþimui á aktyvià to paties lygio sportinæ veiklà. Nepaisant didelio skaièiaus klinikiniø tyrimø, kuriø metu buvo tiriamos priekinio kryþminio raiðèio traumos ir rekonstrukcijos, vis dar neaiðkios prieþastys, lemianèios sugráþimà á buvusá aktyvumo lygá. Beje, kitø tyrimø autoriai nenurodo tikslaus pacientø sugráþimo á buvusá fizinio aktyvumo lygá laiko, bet tik pageidautinà sugráþimo laikà (1, 4, 7, 9, 10, 12 15, 21 30). Visi tyrimai, deja, buvo sukoncentruoti tik á sugráþimo faktà, bet ne sugráþimo laikà (1, 4, 7, 9, 10, 12 15, 21 30). Kita galima mûsø pacientø ankstyvo sugráþimo á buvusá aktyvumo lygá prieþastis galëtø bûti ta, kad mûsø tiriamiesiems nerasta sànario kremzlës ar meniskø paþeidimo. Visi lëtiniai priekinio kryþminio raiðèio plyðimø atvejai sàlygoja menisko ir sànarinës kremzlës paþeidimus, o tai visada susijæ su prastesniais rezultatais (1, 4, 7, 9, 10, 12 15, 21 30). A. Shelbourne ir kt. (31), nagrinëdami ilgalaikius rezultatus, padarë iðvadà, kad sëkmingos priekinio kryþminio raiðèio rekonstrukcijos turi átakos meniskø plyðimø rizikai ir sànarinës kremzlës paþeidimams. Pagreitinta reabilitacijos programa ir stipri pacientø motyvacija greièiau gráþti á ankstesnæ sportinæ veiklà taip pat reikðmingi veiksniai, galintys turëti átakos galutiniams rezultatams. Iki priekinio kryþminio raiðèio operacijos buvo aptarta pacientø motyvacija, todël pacientai, neturintys stiprios motyvacijos atnaujinti buvusá fizinio aktyvumo lygá, á mûsø tyrimà nebuvo átraukti. Ádomûs perspektyviojo A. Svenson ir kt. tyrimo duomenys (31). Jie nustatë, kad Tegnerio aktyvumo skalës balas buvo statistiðkai reikðmingai aukðtesnis po sëkmingø PKR rekonstrukcijø palyginus su ikioperaciniais duomenimis, taèiau në viena grupë negráþo á buvusio fizinio aktyvumo lygá. Panaðius duomenis pateikia S. Brandsson ir kt. (23), atlikæ perspektyvøjá tyrimà. Po trejø metø ávertinimo, J. A. Feller ir kt. konstatavo, kad tik 52 proc. pacientø po priekinio kryþminio raiðèio rekonstrukcijos gráþo á ankstesná fizinës veiklos aktyvumo lygá (23). Pagal K. Soderman ir kt., 80 proc. moterø futbolininkiø paliko futbolà dël simptomø, susijusiø su kelio sànario priekinio kryþminio raiðèio trauma (32). Von Parat ir kt. (34) konstatavo, kad 6 proc. ið chirurginiu bûdu gydytø pacientø vis dar þaidë futbolà. Taèiau, remiantis visø ðiø tyrimø duomenimis, negalima nustatyti, ar þaidëjai pasitraukë ið sportinës veiklos dël kryþminio raiðèio traumø, ar dël prieþasèiø, nesusijusiø su kelio sànario traumomis. Savaime suprantama, kad po ilgesnio nei 14 mën. laikotarpio sportininkai gali palikti sportinæ veiklà ir ne dël kelio sànario traumø, o dël kitø prieþasèiø. Labai svarbu paþymëti, kad visos nagrinëtos priekinio kryþminio raiðèio rekonstrukcijos buvo atliktos naudojant standartinæ, t. y. Rosenberg sukurtà, metodikà, kuri nëra anatominë, o transplantatas ásodinamas á priekinio vidinio pluoðto padëtá ðlaunikaulinëje dalyje. Ádomu tai, kad Ph. Colombet ir kt. (34) nustatë tik 88 proc. IKDC A ir B rezultatø ir tik 75 proc. pacientø, po 24 mën. atlikus dvigubo pluoðto priekinio kryþminio raiðèio rekonstrukcijas, gráþo á ankstesná fizinio aktyvumo lygá. Deja, autoriai nenurodë savo pacientø fizinio aktyvumo lygio. L. Snyder-Macler ir kt. (36) iðtyrë santyká tarp pasyvaus kelio sànario lankstumo ir funkciniø rezultatø po priekinio kryþminio raiðèio traumos tarp spor-

7 116 Rimtautas Gudas, Alfredas Smailys, Kristina Vostrugina ir kt. tininkø, taèiau nerado statistiðkai reikðmingo ryðio tarp kelio sànario stabilumo ir funkciniø kelio sànario matavimø. G. Myklebust ir kt. (36) tyrinëjo ilgalaikius rezultatus po priekinio kryþminio raiðèio traumos tarp aukðèiausios lygos rankinio þaidëjø. Ið 57 chirurginiu bûdu gydytø pacientø 33 (58 proc.) gráþo á ankstesná fizinio aktyvumo lygá, 17 þaidëjø (30 proc.) gráþo á þemesná lygá, o 7 ir daugiau niekada nebeþaidë rankinio. Beveik pusë þaidëjø turëjo nenormalià arba labai nenormalià pagal IKDC klasifikacijà ávertintà bûklæ ir skundësi kelio sànario skausmu, nestabilumu ar sumaþëjusia kelio sànario judesiø amplitude. Tyrëjai pastebi, kad operacijos, kurios atliktos m., taikant skirtingà chirurginæ technikà nei PKR rekonstrukcijos, todël neþinoma, ar chirurginës procedûros buvo atliktos tinkamai, neaiðku, ar jas galima lyginti su dabartiniais standartais (37). Mes nenustatëme jokiø subjektyviø skundø ið pacientø dël donorinës vietos silpnumo, taip pat neradome skirtumø tarp grupiø pooperaciniu laikotarpiu vertinant izokinetinæ ðlaunies raumenø susitraukimo jëgà. Taip pat neaiðku, ar ðlaunies raumenø susitraukimo jëgos deficitas turi koká ryðá su sportininko veikla ir pooperaciniais simptomais. R. A. Marder ir kt. apraðo nuolatiná ðlaunies raumenø susitraukimo jëgos deficità, kuris iðliko silpnesnis praëjus 24 mën. po operacijos (38). Clark. ir kt. nustatë 8 proc. keturgalvio ðlaunies raumens ir ðlaunies lenkiamøjø raumenø susitraukimo jëgos deficità praëjus vidutiniðkai 30 mën. po operacijø (7). Mûsø tyrimo metu atliekant ðonines kelio sànario rentgenogramas, abiejose grupëse iðgræþtø kanalø pozicijos, dauguma atvejø ðlaunikaulyje buvo ketvirtoje zonoje, o blauzdikaulyje antroje zonoje. Palyginus rentgenologiniø tyrimø metu nustatytus iðgræþtø kanalø praplatëjimus su tais, kurie buvo apraðyti anksèiau, atliekant priekinio kryþminio raiðèio rekonstrukcijas ið ðlaunies lenkiamøjø sausgysliø, nustatyta, kad kanalai statistiðkai reikðmingai nesiskyrë (15, 16). Daugeliui pacientø, kurie nutraukë aktyvià sportinæ veiklà, atsirado skirtingo dydþio kaulinio kanalo praplatëjimas. Klinikiniø stebëjimø metu visiems þemesnius IKDC ir Tegnerio skalës ávertinimo balus turintiems pacientams nustatyti kaulinio kanalo praplatëjimai. Galima átarti hipotezæ, kad didesnio diametro transplantatas gali turëti ryðá tarp kaulinio kanalo praplatëjimo ir klinikiniø rezultatø. W. Nebelung ir kt. ávertino 29 pacientø (stebëtø dvejus metus) po priekinio kryþminio raiðèio rekonstrukcijos ðlaunies lenkiamøjø sausgyslës transplantà su endosaga ðlaunikaulinëje dalyje (3). Tik 66 proc. pacientø pagal IKDC skalæ rezultatai normalûs arba beveik normalûs. P. Fauno ir kt. (38) atliko perspektyvøjá, atsitiktinës atrankos tyrimà ir nustatë kanalo praplatëjimà, nors statistiðkai reikðmingo skirtumo tarp Lysholm ir IKDC ávertinimø vieneriø metø stebëjimo laikotarpiu nenustatyta (39). E. E. Khalfajan ir kt. (39) perspektyviojo tyrimo metu ávertino 128 pacientus, kuriems buvo atliktos PKR rekonstrukcijos ið savojo girnelës raiðèio, ir nustatë koreliacijà tarp patenkinamos PKR transplanto kanalo pozicijos ir klinikiniø rezultatø. Klinikiniai rezultatai teigiamai koreliavo su uþpakalinio ðlaunikaulinio kanalo padëtimi (atliktose ðoninëse rentgenogramose) ir nekoreliavo su priekinio blauzdikaulinio kanalo padëtimi (40). K. A. Jansson ir kt. (26) rado þymø kaulinio kanalo praplatëjimà, atlikæ rentgenogramas po priekinio kryþminio raiðèio rekonstrukcijos su endosaga. Nepaisant to, statistiðkai reikðmingo kelio sànario nestabilumo nenustatyta ir gauti geri klinikiniai rezultatai. C. Prodromos ir kt. (14) retrospektyviai analizavo 133 asteninio kûno sudëjimo pacientus po atliktos pirminës priekinio kryþminio raiðèio rekonstrukcijos su ðlaunies lenkiamøjø sausgysliø transplantais. Visi transplantai buvo fiksuoti su endosaga ðlaunikaulinëje dalyje ir sraigtais blauzdikaulio dalyje. 96,9 proc. atvejø po PKR rekonstrukcijø nustatytas 3 mm tarp sveiko ir operuoto kelio sànario stabilumo skirtumas, 85,7 proc. 2 mm skirtumas; 3 proc. 4 mm skirtumas. Në vienam nenustatytas didesnis nei 5 mm skirtumas. R. Sandberg ir kt. (40) iðtyrë 63 pacientus, kuriems buvo netinkamai ásodintas priekinio kryþminio raiðèio transplantatas, visi pacientai skundësi pastoviu kelio sànario nestabilumu ir skausmu. Daþniausia PKR rekonstrukcijos klaida netinkamos padëties pasirinkimas ðlaunikaulinëje dalyje pagal priekinio kryþminio raiðèio anatomijà. Statistiðkai reikðminga koreliacija nustatyta tarp transplantato ðlaunikaulinës padëties sagitalinëje plokðtumoje ir klinikiniø rezultatø: IKDC ávertis maþëjo didëjant transplantato atstumui priekine-uþpakaline kryptimi nuo labiausiai izometrinio priekinio kryþminio raiðèio pluoðto. Ðio tyrimo privalumas perspektyvusis tyrimas ir tai, kad tas pats ortopedas atliko visas PKR rekonstrukcijas, ir tas pats tyrëjas, kuris nedalyvavo nei operacijoje, nei reabilitacijos procese, atliko ikioperacinius ir pooperacinius ávertinimus. Remdamiesi ðio tyrimo duomenimis, mes darome iðvadà, kad artroskopinë priekinio kryþminio raiðèio tiek dviejø pluoðtø, tiek vieno pluoðto dalies rekonstrukcija, naudojant ðlaunies lenkiamøjø sausgysliø transplantatà ir fiksuojant já besirezorbuojamaisiais sraigtais ðlaunikaulyje ir blauzdikaulyje, yra vienodai efektyvios ir saugios metodikos, o gauti klinikiniai rezultatai rodo geresnæ tendencijà lyginant su áprastinëmis priekinio vidinio pluoðto PKR rekonstrukcijos metodikomis.

8 Prospektyvusis dviejø ir vieno pluoðto priekinio kryþminio raiðèio rekonstrukcijos metodø palyginimas 117 A prospective comparison of double- and single-bundle anterior cruciate ligament reconstructions Rimtautas Gudas, Alfredas Smailys, Kristina Vostrugina, Ramûnas Tamoðiûnas 1, Donatas Simonaitis 1, Romas Jonas Kalesinskas Department of Orthopedics and Traumatology, 1 Department of Anesthesiology, Kaunas University of Medicine, Lithuania Key words: anterior cruciate ligament; sports injuries; single-bundle reconstruction; double-bundle technique. Summary. Objective. A nonrandomized clinical study was performed to compare the clinical and radiological outcome between double-bundle and single-bundle anterior cruciate ligament (ACL) reconstructions with semitendinosus tendon in athletes. Material and methods. We examined 70 patients with unilateral anterior cruciate ligament injury. They were followed up for a mean of 24 months. Each group of 35 patients underwent either double- or singlebundle ACL reconstruction. The mean age of the patients was 24.7 years (range, years). There were no differences between two groups regarding age at surgery, sex, follow-up period, period before surgery, combined meniscus injuries, athletic activity level, and International Knee Documentation Committee (IKDC) and Tegner scores. All patients followed the same postoperative program. They were evaluated using manual knee laxity tests, knee extension and flexion strength testing. General knee condition was evaluated by the IKDC and Tegner scores. Results. The results were excellent and good in 32 (91.4%) patients after double-bundle ACL reconstruction and in 30 (85.7%) patients after single-bundle ACL reconstruction, evaluating by IKDC system. However, statistical analysis showed no significant difference between the two groups regarding all IKDC-categorized data (P=0.87). The average scores of Tegner activity in double-bundle and single-bundle groups were 8.0 and 8.1, respectively. Conclusions. This trial showed no significant difference between the double and single-bundle ACL repairs. Correspondence to R. Gudas, Department of Orthopedics and Traumatology, Kaunas University of Medicine, Eiveniø 2, Kaunas, Lithuania. rimtautas.gudas@kmuk.lt Literatûra 1. Aglietti P, Buzzi R, Zaccherotti G, De Biase P. Patellar tendon versus doubled semitendinosus and gracilis tendons for anterior cruciate ligament reconstruction. Am J Sports Med 1994;22: Kurosaka M, Yoshiya S, Andrish JT. A biomechanical comparison of different surgical techniques of graft fixation and anterior cruciate ligament reconstruction. Am J Sports Med 1987;15: Nebelung W, Becker R, Merkel M, Ropke M. Bone tunnel enlargement after anterior cruciate ligament reconstruction with semitendinosus tendon using endobutton fixation on the femoral side. Arthroscopy: The Journal of Arthroscopic and Related Surgery 1998:14(8): Steenlage E, Brand JC Jr, Johnson DL, Caborn DN. Correlation of bone tunnel diameter with quadrupled hamstring graft fixation strength using a biodegradable interference screw. Arthroscopy 2002;18: Muneta T, Koga H, Mochizuki T, Ju Y-J, Hara K, Nimura A, et al. A prospective randomized study of 4-strand semitendinosus tendon anterior cruciate ligament reconstruction comparing single-bundle and double-bundle techniques arthroscopy. The journal of arthroscopic and related surgery 2007;23(6): Becker R, Voigt D, Starke C, Heymann M, Wilson GA, Nebelung W. Biomechanical properties of quadruple tendon and patellar tendon femoral fixation techniques. Knee Surg Sports Traumatol Arthrosc 2001;9: Clark R, Olsen RE, Larson BJ, Goble EM, Farrer RP. Crosspin femoral fixation: a new technique for hamstring anterior cruciate ligament reconstruction of the knee. Arthroscopy 1998;14: Engebretsen L, Benum P, Fasting O, Molster A, Strand T. A prospective randomized study of three surgical techniques for treatment of acute ruptures of the anterior cruciate ligament. Am J Sports Med 1990:18: Harilainen A, Linko E, Sandelin J. Randomized prospective study of ACL reconstruction with interference screw fixation in patellar tendon autografts versus femoral metal plate suspension and tibial post fixation in hamstring tendon autografts: 5-year clinical and radiological follow-up results. Knee Surg Sports Traumatol Arthrosc 2006;14: Harilainen A, Sandelin J, Jansson KA. Cross-pin femoral fixation versus metal interference screw fixation in anterior cruciate ligament reconstruction with hamstring tendons: results of a controlled prospective randomized study with 2-year follow-up. Arthroscopy 2006;21(1): Engebretsen L, Benum P, Fasting O, Molster A, Strand T. A

9 118 Rimtautas Gudas, Alfredas Smailys, Kristina Vostrugina ir kt. prospective randomized study of three surgical techniques for treatment of acute ruptures of the anterior cruciate ligament. Am J Sports Med 1990:18: Roos H, Ornell M, Gardsell P, Lohmander LS. Soccer after anterior cruciate ligament injury an incompatible combination? A national survey of incidence and risk factors and a 7-year follow-up of 310 players. Acta Orhtop Scand 1995:66: Prodromos C, Han YS, Keller BL, Bolyard RJ. Stability results of hamstring anterior cruciate ligament reconstruction at 2-to 8 year follow-up. Arthroscopy 2005;21: Fabbriciani C, Milano G, Mulas PD, Ziranu F, Severini G. Anterior cruciate ligament reconstruction with doubled semitendinosus and gracilis tendon graft in rugby players. Knee Surg Sports Traumatol Arthrosc 2005;13(1): Adam F, Pape D, Steimer O, Kohn D, Rupp S. Biomechanical properties of interference screw implantation in replacement of the anterior cruciate ligament with patellar and hamstring transplants. An experimental study using roentgen stereometry analysis (RSA). Orthopade 2001;30: Ahmad CS, Gardner TR, Groh M, Arnouk J, Levine WN. Mechanical properties of soft tissue femoral fixation devices for anterior cruciate ligament reconstruction. Am J Sports Med 2004;32: Giurea M, Zorilla P, Amis A, Aichroth P. Comparative pullout and cyclic-loading strength tests of anchorage of hamstring tendon grafts in anterior cruciate ligament reconstruction. Am J Sports Med 1999;27: Kousa P, Jarvinen TLN, Vihavainen M, Kannus P, Jarvinen M. The fixation strength of six hamstring tendon graft devices in anterior cruciate ligament reconstruction. Part I. Femoral site. Am J Sports Med 2003;31: Tsuda E, Fukuda Y, Loh JC, Debski RE, Fu FH, Woo SL. The effect of soft-tissue graft fixation in anterior cruciate ligament reconstruction on graft-tunnel motion under anterior tibial loading. Arthroscopy 2002;18: Anderson AF, Snyder RB, Lipscomb AB. Anterior cruciate ligament reconstruction. A prospective randomized study of three surgical methods. Am J Sports Med 2001;29: Aune AK, Holm I, Risberg MA. Four-strand hamstring tendon autograft compared with patellar tendon-bone autograft for anterior cruciate ligament reconstruction: A randomized study with two-year follow-up. Am J Sports Med 2001;29: Brandsson S, Faxen E, Kartus J, Jerre R, Eriksson BI, Karlsson J. A prospective four-to seven-year follow-up after arthroscopic anterior cruciate ligament reconstruction. Scand J Med Sci Sports 2001;11: Feller JA, Webster FE, Webster KE. A Randomized comparison of patellar tendon and hamstring tendon anterior cruciate ligament reconstruction. Am J Sports Med 2003: 31(4): Gobbi A, Mahajan S, Zanazzo M, Tuy B. Patellar tendon versus quadrupled bone semitendinosus anterior cruciate ligament reconstruction: a prospective clinical investigation in athletes. The Journal of Arthroscopic and Related Surgery 2003;19(6): Harner CD, Marks PH, Fu FH, Irrgang JJ, Silby MB, Mengato R. Anterior cruciate ligament reconstruction: endoscopic versus two-incision technique. Arthroscopy 1994;10: Jansson KA, Linko E, Sandelin J, Harilainen A. A Prospective Randomized Study of Patellar versus Hamstring Tendon Autografts for Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2003;31(1): Ma CB, Francis K, Towers J, Irrgang J, Fu FH, Harner CH. Hamstring anterior cruciate ligament reconstruction: A comparison of bioabsorbable interference screw and endobutton-post fixation. Arthroscopy 2004;20: Mark D, Shaieb MD, Kan DM, Chang SK, Jay M, Marumoto JM, et al. A Prospective Randomized Comparison of Patellar Tendon Versus Semitendinosus and Gracilis Tendon Autografts for Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2002;30(2): Wolf EM. Semitendinosis and gracilis anterior cruciate ligament reconstruction using the TransFix technique. Tech Orthop 1998;13: Scheffler SU, Sudkamp NP, Gockenjan A, Hoffmann RF, Weiler A. Biomechanical comparison of hamstring and patellar tendon graft anterior cruciate ligament reconstruction techniques: The impact of fixation level and fixation method under cyclic loading. Arthroscopy 2002;18: Svenson M, Sernet N, Karlsson J, Kartus JT. A prospective comparison of bone-patellar tendon-bone and hamstring grafts for anterior cruciate ligament reconstruction in female patients. Knee Surg Sports Traumatol Arthrosc 2006;14: Soderman K, Alfredson H, Pietila T, Werner S. Risk factors for leg injuries in female soccer players: a prospective investigation during one outdoor season. Knee Surg Sports Traumatol Arthrosc 2001;9: Zantop T, Weimann A, Ruemmler M, Hassenpflug J, Petersen W. Initial fixation strength of two bioabsorbable pins for the fixation of hamstring grafts compared to interference screw fixation. Single cycle and cycling loading. Am J Sports Med 2004;32: Colombet Ph, Robinson J, Jambou S, Allard M, Bousguet V, de Lavigne C. Two-bundle, four-tunnel anterior cruciate ligament reconstruction. Knee Surg Sports Traumatol Arthrosc 2006;14: Snyder-Macler L, Fritzgerald GK, Bartolozzi AR, Cicotti MG. The relationship between passive joint laxity and functional outcome after anterior cruciate ligament injury. Am J Sports Med 1997;25: Myklebust G, Holm I, Mæhlum S, Engebretsen L, Bahr R. Clinical, Functional, and Radiologic Outcome in Team Handball Players 6 to 11 Years after Anterior Cruciate Ligament Injury. Am J Sports Med 2003;31: Marder RA, Raskind JR, Carroll M. Prospective evaluation of arthroscopically assisted anterior cruciate ligament reconstruction. Patellar tendon versus semitendinosus and gracilis tendons. Am J Sports Med 1991;19: Fauno P, Kaalund S. Tunnel widening after hamstring anterior cruciate ligament reconstruction is influenced by the type of graft fixation used: a prospective randomized study. Knee Surg Sports Traumatol Arthrosc 2005;13(1): Khalfayan EE, Sharkey PF, Alexander AH. The relationship between tunnel placement and clinical results after anterior cruciate reconstruction. Am J Sports Med 1996;24: Sandberg R, Balkfors B, Nilsson B. Operative versus nonoperative treatment of recent injuries to the ligaments of the knee. A prospective randomised study. J Bone Joint Surg 1987;69-A: Straipsnis gautas , priimtas Received 31 August 2007, accepted 11 January 2008

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