Joint pain in dogs related to osteoarthritis part 3
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1 Vet Times The website for the veterinary profession Joint pain in dogs related to osteoarthritis part 3 Author : Kevin Parsons, Jo Murrell Categories : Companion animal, Vets Date : January 11, 2016 Osteoarthritis (OA) is a common, painful condition of dogs that can be challenging to manage successfully in practice. Part one of this three-part article (VT45.32) discussed causes and diagnosis, while part two (VT45.50) looked at non-surgical management options. This final part discusses surgical options for the management of OA-related pain. Table 1. Surgical options available for the treatment of osteoarthritis based on the joint affected. Numerous surgical options are available for management of OA and a full discussion of advantages and disadvantages should be held with owners of affected pets. Each case should be considered individually, based on the owners expectations, patient features and joint involved. Options include joint replacement, excision arthroplasty, arthrodesis, bone realignment surgery (osteotomy) or arthroscopy with joint debridement procedures (Table 1). Joint replacement surgery 1 / 13
2 Total joint replacement surgery is considered a standard treatment for advanced degenerative joint conditions in humans (Allen, 2012) and is becoming a readily available and increasingly affordable option for the treatment of advanced cases of hip, stifle and elbow osteoarthritis in dogs. Customised joint replacements have also been reported for individual cases of painful shoulder and tibiotarsal joint conditions and will also inevitably become more available in the future (Sparrow et al, 2014). Also read: Osteoarthritic joint pain in dogs part one: causes and diagnosis Painful Joints associated with osteoarthritis in dogs When considering joint replacement, possible complications and costs must always be discussed fully with the owner. This conversation is best held between the surgeon performing the operation and the client during an initial joint replacement assessment consultation. Total hip replacement (THR) is the preferred surgical option for the management of clinically significant hip OA in all breeds and sizes of dog particularly where conservative treatment has failed. Excellent clinical results have been reported in a large number of clinical cases (Guerrero and Montavon, 2009; Liska, 2010; Lascelles et al, 2010; Marino et al, 2012). Following successful THR surgery, one expects a rapid and full return to normal joint function (Figure 1). The elbow joint is a much more complex joint than the hip. This has resulted in much slower implant development, as well as less predictable outcomes following surgery than that associated with THR (Conzemius et al, 2001; Conzemius, 2009; Acker 2009; Innes et al, 2012). An increasing amount of evidence (both anecdotal and in the literature) suggests elbow replacement surgery offers benefits in carefully selected cases of elbow pain associated with OA. In the majority of cases it is preferable to arthrodesis. Objective data, including large numbers of cases of the elbow replacement systems available, is unfortunately lacking (Figure 2). 2 / 13
3 Total knee replacement (TKR) surgery for canine patients is another relatively recent innovation. Reported case numbers are low (Liska et al, 2007; Eskelinen et al, 2012; Burton et al, 2014); however, an increasing number of UK referral centres offer this surgery and there is likely to continue to be an increasing amount of evidence to support TKR use in appropriate cases of, and advanced, stifle OA (Figure 3). Figure 1a. Preoperative radiograph showing a left total hip replacement. Figure 1b. Postoperative radiograph of the same left total hip replacement. 3 / 13
4 Figure 2a. Postoperative radiograph of a commercially available elbow replacement system. Figure 2b. Postoperative radiograph of a commercially available elbow replacement system. Figure 3a. Preoperative radiograph showing a left total knee replacement for treatment of osteoarthritis secondary to a chronic type X tibial fracture. Figure 3b. Postoperative radiograph showing a left total knee replacement for treatment of osteoarthritis secondary to a chronic type X tibial fracture. 4 / 13
5 Excision arthroplasty Excision arthroplasty of the coxofemoral joint (femoral head and neck excision; FHNE) is a commonly performed procedure for the treatment of painful hip joint conditions. When performed appropriately, FHNE results in reduced joint pain associated with OA. Off and Matis (1997) reported functional results as good in 38% of patients, satisfactory in 20% and poor in 42% of cases. The outcome is not as reliable or predictable as that of a THR in dogs of any size and is therefore not the preferred treatment option for hip OA. It is, however, a cheaper and simpler procedure. With good surgical technique (removal of the entire femoral neck) and postoperative analgesia and physiotherapy many small dogs do obtain reasonable limb function. The main complications of FHNE include ongoing lameness, limb shortening, muscle atrophy and decreased range of movements. Traditionally, it has been reported cats and small dogs can do very well following this surgery, but reports demonstrate THR is also a superior technique in these patients (Liska, 2010; Figure 4). In the authors experience, excision arthroplasty can be a useful technique for the treatment of metacarpal/metatarsal joint or interphalangeal joint OA. It is a simple and quick cosmetically aesthetic alternative to arthrodesis (which, in the authors experience, is a challenging technique) or amputation of these joints (Jauernig et al, 1999). The authors have seen a number of cases with persistent lameness localised to the metatarsal phalangeal joints respond favourably to this surgery (Figure 5). Excision arthroplasty has also been reported as an effective alternative salvage procedure to arthrodesis for conditions of the canine shoulder joint (Bruecker and Piermattei, 1988). Figure 4. Functional limb shortening and muscle atrophy is commonly observed following femoral 5 / 13
6 head and neck excision, and results in ongoing lameness. Figure 5a. Preoperative image of an excision arthroplasty performed for the treatment of lameness localised to metacarpophalangeal joint V of the right forelimb of a 10-year-old Labrador retriever. Figure 5b. Postoperative image of an excision arthroplasty performed for the treatment of lameness localised to metacarpophalangeal joint V of the right forelimb of a 10-year-old Labrador retriever. Arthrodesis The aim of joint arthrodesis is to achieve complete fusion of a joint at an appropriate standing angle. Fusion removes the discomfort associated with movement and can, therefore, be an effective treatment for dogs affected with painful OA. The procedure is most commonly considered for management of pain associated with the carpi and tarsi. It can also be considered, although less commonly used, for intractable pain associated with the elbow, stifle and metacarpophalangeal and metatarsophalangeal joints. 6 / 13
7 Pancarpal arthrodesis (rather than partial carpal arthrodesis) is most commonly indicated for OA of the carpal joint as the radiocarpal joint is typically involved. Limb function following surgery is generally good (Jerram et al, 2009; Sawyere et al, 2015; Bristow et al, 2015). Advanced OA is a common problem affecting the hock joint secondary and commonly occurs as a result of osteochondrosis. Where the tibiotarsal joint is involved, pantarsal arthrodesis has been reported to give an acceptable outcome to most owners (McKee et al, 2004). Where the tibiotarsal joint is not involved, a partial tarsal arthrodesis is the preferred option. Partial tarsal arthrodesis typically results in excellent limb function as the motion of the talocrural joint is preserved (Figure 7). Figure 6a. Pre-operative stressed carpal radiograph of pancarpal arthrodesis performed for treatment of chronic carpal instability and associated osteoarthritis. Figure 6b. Postoperative orthogonal radiographs (with 6c) of pancarpal arthrodesis performed for treatment of chronic carpal instability and associated osteoarthritis. 7 / 13
8 Figure 6c. Postoperative orthogonal radiographs (with 6b) of pancarpal arthrodesis performed for treatment of chronic carpal instability and associated osteoarthritis. Figure 7a. Postoperative radiographs (with 7b) of a pantarsal arthrodesis performed for treatment of tarsal instability and osteoarthritis. Figure 7b. Postoperative radiographs (with 7a) of a pantarsal arthrodesis performed for treatment of tarsal instability and osteoarthritis. 8 / 13
9 Figure 8. Postoperative image of an elbow arthrodesis. Shoulder arthrodesis is an option for the management of shoulder OA poorly responsive to conservative treatment. The procedure is reported to result in surprisingly little functional impairment in dogs. This is most likely a result of a compensatory increase in the amount of scapula motion that occurs during locomotion following this procedure. Pucheu and Duhautois (2008) reported shoulder arthrodesis results in good to excellent functional results in dogs in 87.5% of cases. In the authors experience, many cases of shoulder arthritis respond favourably to conservative therapy and, therefore, surgery has not been necessary or indicated. Elbow arthrodesis is a salvage procedure for dogs with severe OA (Piermattei et al, 2006), but is typically reserved for cases where elbow replacement is not an option or has failed. Anecdotally, the procedure can result in relatively satisfactory function (Figure 8). Stifle arthrodesis is an alternative to TKR where the latter is not an option (for example, if a dog is too small for a knee replacement). Reported limb function in these cases can be satisfactory; however, knee replacement is a preferable option whenever possible. Arthroscopy and osteotomy procedures Arthroscopy can be used as both a diagnostic and therapeutic tool. Arthroscopic debridement of bone fragments from within osteoarthritic joints can result in clinical improvement. This may be maintained in the long-term and the ongoing effectiveness will be dependent on the progression of arthritis within the joint. A number of osteotomy techniques have been developed and applied to the elbow joint, including the proximal ulna osteotomy, sliding humeral osteotomy (Fitzpatrick et al, 2009; Wendelburg and 9 / 13
10 Beale; 2014) and proximal abducting ulna osteotomy (Kyon, Switzerland). These procedures are often combined with arthroscopic assessment and/or treatment. Elbow osteotomy procedures are aimed at altering the distribution of load across the articular surface and may improve function and comfort in patients where cartilaginous erosion is localised to the medial compartment of the elbow joint. The long-term efficacy of these procedures is variable and the effect on future development of OA is as yet largely undetermined (Figure 9). Figure 9a. Proximal abducting ulna osteotomy and sliding humeral ulna osteotomy can be used as part of the management strategy in cases where medial compartment cartilage erosion is identified and confirmed during arthroscopy. Figure 9b. Proximal abducting ulna osteotomy and sliding humeral ulna osteotomy can be used as part of the management strategy in cases where medial compartment cartilage erosion is identified and confirmed during arthroscopy. 10 / 13
11 Figure 9c. Proximal abducting ulna osteotomy and sliding humeral ulna osteotomy can be used as part of the management strategy in cases where medial compartment cartilage erosion is identified and confirmed during arthroscopy. Conclusions An increasing array of surgical options is available for the management of patients with OA. There are advantages and disadvantages to surgical options available. A full discussion should be held with pet owners early in the course of the condition so they are fully informed of the choices available for ongoing treatment of their pet and, in some cases, early surgery may be beneficial. Each case should be considered individually based on the pet s response to previous treatments, owners expectations, patient factors and the joint involved. In patients proving challenging to manage, referral to an orthopaedic or pain clinic for specialist advice about surgical options and/or pain management is advised. Acknowledgements The authors would like to thank Peter Attenburrow from St David s Veterinary Referrals in Exeter, for supplying the radiographs for this article. References Acker RL (2009). TATE elbow development, Proceedings of the British Veterinary Orthopaedic Association Autumn Scientific Meeting, Cambridge: Allen MJ (2012). Advances in total joint replacement in small animals, Journal of Small Animal Practice 53(9): / 13
12 Bristow PC, Meeson RL, Thorne RM, Butterworth SJ, Rutherford S, Renwick AI, Wustefeld- Janssens B, Witte PG, Woods S, Parsons KJ, Keeley BJ, Owen MR, Li A and Arthurs GI (2015). Clinical comparison of the hybrid dynamic compression plate and the casteless plate for pancarpal arthrodesis in 219 dogs, Veterinary Surgery 44(1): Bruecker KA and Piermattei DL (1988). Excision arthroplasty of the canine scapulohumeral joint: report of three cases, Veterinary and Comparative Orthopaedics and Traumatology Archive 3-4: Burton NJ, Wallace AM, Parsons K and Colborne GR (2014). Total knee replacement in a dog with a non-union type B3 tibial plateau fracture, Veterinary and Comparative Orthopaedics and Traumatology 27(2): Conzemius MG, Aper RL and Hill CM (2001). Evaluation of a canine total-elbow arthroplasty system: a preliminary study in normal dogs, Veterinary Surgery 30(1): Conzemius MG (2009). Nonconstrained elbow replacement in dogs, Veterinary Surgery 38(2): Eskelinen EV, Liska WD, Hyytiäinen HK and Hielm-Björkman A (2012). Canine total knee replacement performed due to osteoarthritis subsequent to distal femur fracture osteosynthesis, Veterinary and Comparative Orthopaedics and Traumatology 25(5): Fitzpatrick N, Yeadon R, Smith T and Schulz K (2009). Techniques of application and initial clinical experience with sliding humeral osteotomy for treatment of medial compartment disease of the canine elbow, Veterinary Surgery 38(2): Guerrero TG and Montavon PM (2009). Zurich cementless total hip replacement: retrospective evaluation of 2nd generation implants in 60 dogs, Veterinary Surgery 38(1): Innes JF, Pettitt R and Smirthwaite P (2012). Development of the Sirius canine total elbow prosthesis, Veterinary Orthopedic Society 39th Annual Conference, Crested Butte, Colorado. Jerram RM, Walker AM, Worth AJ and Kuipers von Lande RG (2009). Prospective evaluation of pancarpal arthrodesis for carpal injuries in working dogs in New Zealand, using dorsal hybrid plating, New Zealand Veterinary Journal 57(6): Jauernig S, Spreng D and Schawalder P (1999). Excision arthroplasty as a therapy for recurring osteoarthritis of the toe joint of dogs, Schweizer Archiv für Tierheilkunde 141(10): Lascelles BD, Freire M, Roe SC, DePuy V, Smith E and Marcellin-Little DJ (2010). Evaluation of functional outcome after BFX total hip replacement using a pressure sensitive walkway, Veterinary Surgery 39(1): Liska WD, Marcellin-Little DJ, Eskelinen EV, Sidebotham CG, Harrysson OLA and Hielm- Bjorkman AK (2007). Custom total knee replacement in a dog with femoral condylar bone loss, Veterinary Surgery 36(4): Liska WD (2010). Micro total hip replacement for dogs and cats: surgical technique and outcomes, Veterinary Surgery 39(7): Marino DJ, Ireifej S and Loughin CA (2012). Micro total hip replacement in dogs and cats, 12 / 13
13 Powered by TCPDF ( Veterinary Surgery 41(1): McKee WM, May C, Macias C and Lapish JP (2004). Pantarsal arthrodesis with a customised medial or lateral bone plate in 13 dogs, Veterinary Record 154(6): Off W and Matis U (1997). Excision arthroplasty of the hip joint in dogs and cats. Clinical, radiographic and gait analysis findings at the surgical veterinary clinic of the Ludwig Maximilians University of Munich, Tierärztliche Praxis 25(4): Piermattei DL, Flo GL and DeCamp CE (2006). The elbow joint. In Brinker, Piermattei and Flo s Handbook of Small Animal Orthopaedics and Fracture Repair (4th edn), WB Saunders, Philadelphia: Pucheu B and Duhautois B (2008). Surgical treatment of shoulder instability. A retrospective study on 76 cases (1993 to 2007), Veterinary and Comparative Orthopaedics and Traumatology 21(4): Sawyere DM, Jerram RM and Walker AM (2015). Long-term follow-up of working dogs in New Zealand following pancarpal arthrodesis using dorsal hybrid plating, New Zealand Veterinary Journal 63(6): Sparrow T, Fitzpatrick N, Meswania J and Blunn G (2014). Shoulder joint hemiarthroplasty for treatment of severe osteochondritis dissecans lesion in a dog, Veterinary and Comparative Orthopaedics and Traumatology 27(3): Wendelburg KM and Beale BS (2014). Medium and long term evaluation of sliding humeral osteotomy in dogs, Veterinary Surgery 43(7): / 13
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