In dysplastic hips, concentration of the weight and load on the lateral peripheral limbus causes its detachment andtearing, which is an important risk factor of coxarthrosis.Arthrograms of 77 hip joints in 40 patients (all female) withdysplastic hips were used to analyze the covering of the acetabulum and limbus.The average age at the time of arthrogramswas 26 years (13-48).The limbus covering angle, a supplement to the CE angle, was added to the CE angle to measure thefemoral head cover.Our results demonstrated a negative correlation between the degree of acetabular dysplasia and thelength of the limbus.Insufficient bony acetabulums tended to be accompanied by proportionally longer limbi.Also, thelimbus was significantly longer in cases with tears, suggesting that a long and unstable limbus might be more likely toundergo tearing, thereby increasing the risk of coxarthrosis.
抄録全体を表示