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KMID : 0370919940110020284
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Yeungnam Univercity Journal of Medicine
1994 Volume.11 No. 2 p.284 ~ p.292
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The Early Result of Anterior Rotational Osteotomy in the Treatment of Osteonecrosis of the Femoral Head
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Abstract
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In transtrochanteric rotational osteotomy to treat osteonecrosis of the femoral head, the necrotic superior anterior femoral head is rotated anteriorly around the longitudinal neck axis so that the weight bearing force is transferred to the
intact
posterior surface. The ratio of transposed intact articular surface of the femoral head to the weight-bearing surface of the acetabulum on postoperative anteroposterior view of the hip roentgenograph is the most important indicator of the
prognosis.
During the period from December 1992 to June 1994, we treated 31 hips in 28 patients who were indicated for the anterior rotational osteotomy among the patients of osteoncrosis of the femoral head. Among the patients, male were 27 and female was
one.
Age distribution was from 13 to 62 years old and mean age was 44.3. According to the Ficat and Arlet classification, II A was most in number as 16 II B was 7 and III was 8. As their etiolgic factors, alcohol was most in number as 18, steroid was
3,
idiopathic was 5 and trauma was 2. The mean rate of the intact area of the posterior part of the femoral head to the total articular surface on the preoperative lateral view of the hip roentgenograph was 41.8%. The mean ratio of transposed intact
articular surface of the femoral head to the weight bearing surface of the acetabulum was 53.8% Fixation devices were screws or dynamic hip screw.
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