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Clinical and diagnostic outcomes in arthroscopic treatment for posterolateral plicae impingement within the radiocapitellar joint.

ABSTRACT: Synovial plica is rarely diagnosed as cause of elbow pain. Impingemnt of posterolateral plicae in the radiocapitellar joint tends to be usually overlooked. The purpose of this study was to present outcomes of arthroscopic treatment in relatively large number of cases and propose reliable diagnostic test for posterolateral plicae of the radiocapitellar joint.From January 2000 to December 2010, 24 cases diagnosed with pathologic posterolateral radiocapitellar plica on arthroscopic finding were retrospectively reviewed. Magnetic resonance imaging (MRI) evaluation and preoperative physical examination were performed. The posterolateral radiocapitellar plica test newly proposed by the present study was also conducted. To measure postoperative clinical outcomes, the disabilities of the arm, shoulder, and hand (DASH) score and Mayo elbow performance score (MEPS) were employed. Minimum duration of follow up was 24 months.According to the preoperative MRI, pathologic radiocapitellar plica was identified in 17 cases (70.8%). Preoperatively, maximal tender point was present on the radiocapitellar joint line in 20 cases (83.3%) and mechanical symptoms were observed in 9 cases (37.5%). 6 cases (25%) demonstrated pain at terminal extension and limitation of extension. 20 (83.3%) cases tested positive for posterolateral radiocapitellar plica test. The sensitivity and specificity of the posterolateral radiocapitellar plica test were 83.3% and 87.5%, respectively. The accuracy value was 86.3%. Arthroscopic debridement of pathologic plica in the radiocapitellar joint demonstrated clinical improvements: DASH score was from 36.6 to 8.9 and MEPS was from 56.9 to 95.6 at the latest follow-up.Symptomatic impingement by the pathologic posterolateral plica of the radiocapitellar joint should be considered when posterolateral elbow pain which is refractory to conservative treatment, and other prevalent diseases are excluded. The posterolateral radiocapitellar plica test and radiocapitellar joint line tenderness could be recommended as reliable examination maneuvers to obtain accurate diagnosis. Arthroscopic debridement was an effective method for treating symptomatic plicae.

SUBMITTER: Park KB

PROVIDER: S-EPMC6504535 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Project description:Femoroacetabular hip impingement (FAI) is now well recognized; however, anterior inferior iliac spine (AIIS; or subspine) impingement is a form of hip impingement that is underrecognized and can be an important source of hip disability and functional limitation.To investigate the outcomes after arthroscopic treatment of AIIS/subspine-related hip impingement in the absence of FAI surgery.Case series; Level of evidence, 4.A prospective institutional hip preservation registry was reviewed to identify patients who underwent arthroscopic AIIS decompression without concurrent treatment of FAI. Primary outcome tools captured in the registry included the modified Harris Hip Score (mHHS), the Hip Outcome Score (HOS), and the International Hip Outcome Tool-33 (iHOT-33). Patients with minimum 1-year follow-up were included. Meaningful outcome improvement was determined per minimal clinically important difference (MCID). Statistical analyses were primarily descriptive.Thirty-three patients with a mean follow-up of 19.1 months (range, 12-44 months) were identified. All patients were female, with a mean ± SD age of 26.1 ± 10.3 years. All patients were found to have an associated labral tear, and the mean acetabular version was increased at 2 and 3 o'clock (14.5° and 19.8°, respectively). Mean preoperative outcome scores on the mHHS, HOS ADL (activities of daily living), HOS sport, and iHOT-33 were 57.2 ± 15.3, 66.9 ± 18.8, 43.9 ± 23.6, and 33.5 ± 18.3, respectively. At final available follow-up, mean scores on these outcome measures were 79.5 ± 19.0, 86.8 ± 15.8, 70.4 ± 32.8, and 65.0 ± 31.0, respectively. By the 1-year follow-up, MCID had been achieved in the majority of patients across all 4 tools.There is a paucity of outcomes evidence on AIIS/subspine-related hip impingement. This study demonstrates that isolated subspine impingement can be a cause of hip disability, even in the absence of FAI. Patients with isolated subspine impingement are more likely to be women and to present with low patient-reported outcome scores. However, meaningful outcome improvement can be achieved with arthroscopic AIIS decompression.

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Clinical and diagnostic outcomes in arthroscopic treatment for posterolateral plicae impingement within the radiocapitellar joint.

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