Prediction of the outcome of transtrochanteric rotational osteotomy for osteonecrosis of the femoral head.
We have studied the correlation between the prevention of progressive collapse and the ratio of the intact articular surface of the femoral head, after transtrochanteric rotational osteotomy for osteonecrosis. We used probit analysis on 125 hips in order to assess the ratio necessary to prevent progressive radiological collapse over a ten-year period. The results show that a minimum postoperative intact ratio of 34% was required. This critical ratio may be useful for surgical planning and in assessing the natural history of the condition.
Miyanishi
K
K
Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Noguchi
Y
Y
Yamamoto
T
T
Irisa
T
T
Suenaga
E
E
Jingushi
S
S
Sugioka
Y
Y
Iwamoto
Y
Y
D000328:Adult; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D005270:Femur Head / Q000000981:diagnostic imaging / Q000601:surgery; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging / Q000601:surgery*; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods* / Q000706:statistics & numerical data; D011379:Prognosis; D011859:Radiography; D013997:Time Factors; D016896:Treatment Outcome