Progression and cessation of collapse in osteonecrosis of the femoral head

被引:0
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作者
Nishii, T
Sugano, N
Ohzono, K
Sakai, T
Haraguchi, K
Yoshikawa, H
机构
[1] Osaka Univ, Sch Med, Dept Orthopaed Surg, Suita, Osaka 5650871, Japan
[2] Osaka Natl Hosp, Dept Orthopaed Surg, Osaka, Japan
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中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Thirty-five patients (54 hips) with osteonecrosis of the femoral head without collapse or only with a crescent sign were followed up for at least 5 years to clarify the natural course of osteonecrosis. During the followup, 28 hips (52%) in 21 patients collapsed including nine hips in nine patients with small necrotic lesions occupying less than the medial (2)/(3) of the weightbearing area. Cessation of collapse then was observed in 15 (14 patients) of the 28 hips (54%), especially in eight of the nine hips (89%) with small necrotic lesions. Of the 15 hips in 14 patients with cessation of collapse, 11 hips (73%) in 11 patients had less than 2 mm collapse and 10 hips in nine patients became asymptomatic. The analysis indicated that collapse of the femoral head does not necessarily determine a poor prognosis, and even after collapse occurs, subsequent cessation of collapse can be expected in a certain percentage of hips. Hips with less than 2 mm collapse and necrotic lesions occupying less than the medial (2)/(3) of the weightbearing area have a high chance of cessation of collapse and improvement of symptoms with no surgical intervention.
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页码:149 / 157
页数:9
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