Gordon S L, Cotler J M
Clin Orthop Relat Res. 1978 Nov-Dec(137):175-80.
Many theories have been advanced to explain the final neck shaft angle in the developing proximal femur. Muscle spasticity and delayed weight-bearing are the postulated causes of the development of the valgus deformity in patients with neuromuscular disease. Three patients with coxa vara exhibited some degree of spasticity and delayed weight-bearing. In spite of this, each child developed a varus rather than a valgus hip deformity. Existing theories seem not to adequately explain the development of the final neck shaft angle.
人们提出了许多理论来解释发育中的股骨近端最终的颈干角。肌肉痉挛和负重延迟被认为是神经肌肉疾病患者出现外翻畸形的原因。三名髋内翻患者表现出一定程度的痉挛和负重延迟。尽管如此，每个孩子都出现了髋内翻而非外翻畸形。现有的理论似乎无法充分解释最终颈干角的形成。
