肩関節
Online ISSN : 1881-6363
Print ISSN : 0910-4461
ISSN-L : 0910-4461
外傷性肩関節前方不安定症における関節窩骨性形態の評価
- 3 D C T を用いた検討-
菅谷 啓之土屋 明弘岡崎 壮之石毛 徳之森石 丈二藤田 耕司
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2001 年 25 巻 3 号 p. 453-457

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The purpose of this study is to introduce a simple method of evaluating the shape and quantity of osseous defect of the glenoid rim using three-dimensional computed tomography (3DCT). Glenoid morphology of 84 consecutive shoulders in traumatic anterior glenohumeral instability, including 6 acute glenoid rim fractures, was evaluated through the use of 3DCT, comparing with 13 normal shoulders. Humeral head was deleted during the process of creating reconstructed 3D images. A ratio of osseous defect (fragment) against the outer fitting circle of the lower part of the glenoid contour (from 3o'clock to 9 o'clock) was obtained by images viewed from the perpendicular direction to the glenoid surface.
Forty-one out of 78 chronic cases (52.6%) had an osseous defect. Average ratio of the osseous defect was 7.9 (range,1.3-26.9) % in chronic cases and 24.3 (range,11.5-34.5) % in acute cases. Morphologic abnormality was seen even in 30 out of 37 no defect glenoids(38.5%). The unique imaging technique of this study enables precise morphologic and quantitative evaluation of glenoid and would be a great asset in the preoperative decision making of the surgeons.

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© 日本肩関節学会
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