肩甲上腕関節における軟骨の加齢変化に関する解剖学的研究

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  • Anatomical Study for the Chondral Lesion of the Glenohumeral Joint

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We evaluated the chondral lesion of the glenohumeral joint among the elder population. In this study, 31 shoulders of 20cases (Male 17 cases, Female 14 cases) were evaluated for the macroscopic investigation. The mean age of the cases was 81.8 years old ranging from 54 to 103 years old. Before the evaluation, the rotator cuff and joint capsule were released from the insertion. The observed site was divided into superior, middle, central, and inferior part for the glenoid side, and greater tuberosity, anterosuperior, anteroinferior, posterosuperior, posteroinferior and long head of the biceps part for the humeral side. Macroscoic findings were evaluated according to the cartilage grading system; Grade 0: normal, Grade I: discolouration, Grade II: mild erosion, Grade III: erosion, Grade IV: ulceration, and Grade V: eburnation. There were 5 rotator cuff tears among the cases. For the glenoind side, the superior part showed normal in the most of the cases, but the inferior part showed more than grade II in the most of the cases. The middle part appeared normal in Grade III, but the central part showed Grade III or Grade IV in most of the cases. For the humeral head side, the superior part showed Grade II to III and the inferior part showed Grade 0 to II. The long head of the biceps part appeared in Grade III to IV. In general, it might be understood that a glenohumeral joint arthritis is rare clinically, because it is not a weight-bearing joint. However, focal chondral lesions are often associated with rotator cuff tears and severe joint contracture. This study provided useful information for an arthroscopic evaluation of chondral lesions of the glenohumeral joint.

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  • 肩関節

    肩関節 31 (2), 201-204, 2007

    日本肩関節学会

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