岡山医学会 Acta Medica Okayama 0030-1558 115 3 2004 耳鼻咽喉科領域における内視鏡下鼻内手術 233 236 EN No potential conflict of interest relevant to this article was reported.

岡山医学会 Acta Medica Okayama 0030-1558 115 3 2004 臼蓋形成不全股における関節唇形態の研究 203 210 EN Takuo Ishihama In dysplastic hips, concentration of the weight and load on the lateral peripheral limbus causes its detachment and tearing, which is an important risk factor of coxarthrosis. Arthrograms of 77 hip joins in 40 patients (all female) with dysplastic hips were used to analyze the covering of the acetabulum and limbus. The average age at the time of arthrograms was 26 years (13-48). The limbus covering angle, a supplement to the CE angle, was added to the CE angle to measure the femoral head cover. Our results demonstrated a negative correlation between the degree of acetabular dysplasia and the length of the limbus. Insufficient bony acetabulums tended to be accompanied by proportionally longer limbi. Also, the limbus was significantly longer in cases with tears, suggesting that a long and unstable limbus might be more likely to undergo tearing, thereby increasing the risk of coxarthrosis. No potential conflict of interest relevant to this article was reported.