投球障害における腱板疎部損傷に対する鏡視下手術

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Background: Throwing injuries are often accompanied by anterior instability caused by rotator interval lesion. Repetitive anterior stress by throwing causes injuries of ligaments and tendons around the rotator interval, and causes the enlargement of the anterior-superior space. We have mainly repaired the partial tear of sub-scapularis (SSC) tendon in various findings to reduce the space. The clinical results of arthroscopic repair were investigated and the arthroscopic findings were analyzed. Methods: Seventeen patients (all men, average age 18.7) were operated on and investigated. The details of the players were high school players; 10, university players; 3, rubber baseball players; 2, softball players; 2 cases (5 pitchers, 6 infielders, 6 outfielders). SSC tendons were repaired in all cases, supra-spinatus tendons were repaired in 3 cases and anterior-superior labrum ware repaired in 2 cases under arthroscopy. Clinical results were evaluated according to JSS sports score. The restriction of external rotation was investigated. The average follow-up period was 2.2 years. Results: The features of arthroscopic findings were the raising of attachment of SSP and SSC, and enlargement of the space above LHB. In all cases the enlarged antero-superior space was reduced by SSC repair. JSS improved from 48.6 to 92.3 points. The post-operative restriction of external rotation were -3.5°(1st), and -5.6°(2nd). Conclusion: Arthroscopic repair of the SSC was very useful for the RIL in throwing injury. The slight restriction of range of motion of external rotation did not affect throwing performance.

投球障害における腱板疎部損傷に対する鏡視下手術

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