Ratner A Iu, Larina G P
Zh Nevropatol Psikhiatr Im S S Korsakova. 1984;84(11):1608-9.
The authors state that a marked hypotonia of the lower extremity muscles in children with progressive muscular dystrophy may lead to the development of secondary dislocations and semi-dislocations of the femur, which were detected in 18 of the 32 patients examined. Most of the patients had Werdnig-Hoffmann's spinal amyotrophy which was related to an especially gross muscular hypotonia.
作者指出，进行性肌营养不良患儿下肢肌肉明显肌张力减退可能导致股骨继发性脱位和半脱位，在所检查的32例患者中有18例检测到这种情况。大多数患者患有韦尔尼克-霍夫曼脊髓性肌萎缩症，这与特别严重的肌肉张力减退有关。
