Reliability of Simple Radiographic Parameters for Pincer FAI
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1 Reliability of Simple Radiographic Parameters for Pincer FAI Sung Hoon Yang MD., Dong Hwi Kim, MD., Yong Chul Jeon, MD., Sang Hong Lee MD. PhD., Suenghwan Jo MD. PhD, Chosun University Hospital, Gwangju, South Korea
2 Sung Hoon Yang MD., Dong Hwi Kim, MD., Yong Chul Jeon, MD., Sang Hong Lee MD. PhD., Suenghwan Jo MD. PhD We have no financial relationship to disclose
3 Radiographic Parameter of Pincer Acetabular orientation Is x-ray based parameters reliable?
4 Purpose 1. Validate the reliability of radiographic parameters of pincer FAI for detecting acetabular orientation by comparison with CT 2. Report the overall prevalence in the Korean Population
5 Materials and Methods Subjects : patients between 18 to 60 years who visited our ER due to trauma event and has taken pelvis CT Initial N = 835 Exclusions: N = 331 Acetabular fracture : 82 Underlying spine problems : 74 Pelvic ring injury : 41 Inappropriate or unavailable pelvis AP : 98 Previous arthroplasty state : 22 Acetabular protrusion 22 Acetabular dysplasia : 8 Final subjects for analysis N = 504 (Male 64%)
6 Assessment Prevalence of pincer paramters (cross over sign, ischial spine sign, posterior wall sign) in pelvis AP Independent measurement by two orthopaedic surgeons Third reviewer assessment for any disagreement Statistic JMP software (SAS, NJ, USA) Inter-observer correlation, kappa value for each parameters
7 CT Assessment Cranial anteversion Central anteversion
8 Results Overall prevalence Interobserver correlation (Kappa value) Cross over sign (%) Ischial tuberosity sign (%) Posterior wall sign (%) Cranial anteversion ( ) 12.9 ± 7.4 (6.9%) Central anteversion ( ) 17.8 ± 4.5 (3.8%) 0.886
9 Results Cranial retroversion* Central retroversion** Sensitivity (%) Specificity (%) Sensitivity (%) Specificity (%) Cross over sign Ischial tuberosity sign Posterior wall sign *Cranial retroversion defined as anteversion < 8degrees ** Central retroversion defined as anteversion < 13 degrees
10 Conclusion Except for the ischial tuberosity sign the sensitivity of detecting retroversion of acetabulum was low Specificity was relatively high for all parameters for detecting both cranial and central retroversion The radiographic prevalence of pincer in Korean population ranges 16 to 18% with simple radiography parameters and 4 to 7% with CT
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Prevalence and characteristics of cam-type femoroacetabular deformity in 100 hips with symptomatic acetabular dysplasia: a case control study
Ida et al. Journal of Orthopaedic Surgery and Research 2014, 9:93 RESEARCH ARTICLE Open Access Prevalence and characteristics of cam-type femoroacetabular deformity in 100 hips with symptomatic acetabular
b. Non-arthritic hip (non-capsular patterns)
Evaluation of Hip Disorders and Ruling Out the Lumbosacral Spine Richard Erhard, PT,DC University of Pittsburgh erhardre@upmc.edu Differential Diagnosis Lumbar/Pelvis/Hip 1. Subjective examination a. History
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Does high level youth sports participation increase the risk of femoroacetabular impingement? A review of the current literature
de Silva et al. Pediatric Rheumatology (2016) 14:16 DOI 10.1186/s12969-016-0077-5 REVIEW Does high level youth sports participation increase the risk of femoroacetabular impingement? A review of the current
Take-Home Points. Download pdf. Dec 2018 The American Journal of Orthopedics 1
Poorer Arthroscopic Outcomes of Mild Dysplasia With Cam Femoroacetabular Impingement Versus Mixed Femoroacetabular Impingement in Absence of Capsular Repair Am J Orthop. 2017 January;46(1):E47-E53 Authors:
Does Surgical Hip Dislocation and Periacetabular Osteotomy Improve Pain in Patients With Perthes-like Deformities and Acetabular Dysplasia?
Clin Orthop Relat Res (2015) 473:1370 1377 DOI 10.1007/s11999-014-4115-7 Clinical Orthopaedics and Related Research A Publication of The Association of Bone and Joint Surgeons SYMPOSIUM: 2014 BERNESE HIP
What Is the Impingement-free Range of Motion of the Asymptomatic Hip in Young Adult Males?
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This guideline is structured with clinical indications outlined for each of the following applications: Arthroscopic; Open, non-arthroplasty;
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Title; Periacetabular Osteotomy for the Treatment of Symptomatic Acetabular Dysplasia in. Patients with and without Labral Tears.
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Efficacy of Intra-articular Steroid Injection in Patients with Femoroacetabular Impingement
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Periacetabular osteotomy: sporting, social and sexual activity 9-12 years post surgery
Hip Int 2014; 24 ( 1) : 27-31 DOI: 10.5301/hipint.5000077 Original Article Periacetabular osteotomy: sporting, social and sexual activity 9-12 years post surgery Jakob Klit 1, Charlotte Hartig-Andreasen
Treatment of Femoroacetabular Impingement with Surgical Dislocation
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Thousand Oaks High School AP Research STEM
Investigating open surgical and arthroscopic surgical treatments and non-surgical alternatives for femoral acetabular impingement and torn acetabular labrum Thousand Oaks High School AP Research STEM 2
Rehabilitation Guidelines after Periacetabular Osteotomy (PAO)
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