投球肩におけるBennett lesionとslipping現象との関係について

書誌事項

タイトル別名
  • Relationship between Bennett Lesion and Slipping Phenomenon of the Humeral Head in a Throwing Athlete

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説明

131 shoulders of 131 baseball players were examined by radiograph on AP view in the Zero position. The FSH angle, angle of the gleno-scapular spine and the angle of the humero-scapular spine were measured. The patients were classified into three groups of Bennett lesion. Group A had a Bennett lesion which was on or close to the glenoid (32 shoulders). Group B had a Bennett lesion which was at the inferior of the glenoid (7shoulders). Group C did not have a Bennett lesion(92 shoulders).<BR>The FSH angle showed 72.8±5.3(A),92.3±7.5(B) and 86.6±9.4(C). The angle of the gleno-scapular spine ahowed 83.5±5.3(A),83.1±6.7(B) and 80.3±5.2(C), Angle of humero-scapular spine ahowed 179.3±7.9(A),184.9±6.5(B) and 185.3±7.4(C). There was a statisitcal significance between groupA and groupC in all measurements. The percentages of the positive slipping phenomenon was over 85 degrees in the FSH angle were 0% in groupA,86% in groupB and 64.1% in groupC.<BR>In groupA, the slipping phenomenon could not be observed as in groups B and C. In addition, there was a significant increase of the angle of the gleno-scapular spine and a decrease of the angle of the humero-scapular spine, which meant a stabilization of the glenoid and limitations of hypermobility of the gleno-humeral joint.<BR>According to our results, Bennett lesions which were close to the glenoid could contribute to the dynamic stability of the shoulder functionally.

収録刊行物

  • Katakansetsu

    Katakansetsu 20 (2), 435-439, 1996

    Japan Shoulder Society

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