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The Journal of Bone & Joint Surgery British Volume
Vol. 79-B, Issue 3 | Pages 510 - 511
1 May 1997
SHINDO H IGARASHI H TANEDA H AZUMA H


The Journal of Bone & Joint Surgery British Volume
Vol. 78-B, Issue 6 | Pages 871 - 877
1 Nov 1996
Shindo H Igarashi H Taneda H Azuma H

We have divided Severin group-V severely dysplastic hips with a false into three subtypes, based on the height and shape of the socket. We performed rotational acetabular osteotomy (RAO) in 19 hips in 17 young adults with a type-1 ‘low’ false acetabulum which had direct contact with the true acetabulum. This is a periacetabular osteotomy which gives acetabular coverage with articular cartilage and produces a nearly normal position of the head. Concomitant osteotomies of the proximal femur were carried out in 11 hips. We reviewed the patients clinically and radiologically at a mean of ten years (6 to 18) after operation. Of the 19 hips, 15 showed very good or good results.

This operation is indicated in young adults with a dysplastic hip and a type-1 low false acetabulum. Subclassification of Severin group V is a convenient way of defining those patients who would benefit from the procedure.