Uhthoff H K
Ottawa General Hospital, Kanada.
Z Orthop Ihre Grenzgeb. 1990 Jul-Aug;128(4):341-3. doi: 10.1055/s-2008-1039873.
For the clinician the knowledge of the intrauterine development of the human hip is of great importance particularly for an understanding of the pathogenesis of congenital hip displacement. Observations based on serial sections of fetal hips from our collection showed that the acetabular roof is generally well developed. The posterior wall, on the other hand, consists mostly of the fibrous labrum and little coverage is provided by cartilage. Since the fetal hip is in a position of flexion, a pressure exerted on the knee will be transmitted to the posterior wall of the acetabulum and not to the acetabular roof. Any additional adduction, often found in utero, will further decrease the coverage. Both, the relative weak posterior structures and the position of adduction, may explain the posterior subluxation observed in one of our specimens.
对于临床医生而言，了解人类髋关节的宫内发育情况非常重要，这对于理解先天性髋关节脱位的发病机制尤为关键。基于我们所收集的胎儿髋关节连续切片的观察表明，髋臼顶通常发育良好。另一方面，后壁主要由纤维性盂唇组成，软骨覆盖较少。由于胎儿髋关节处于屈曲位，施加在膝盖上的压力会传递至髋臼后壁而非髋臼顶。子宫内常见的任何额外内收动作都会进一步减少覆盖面积。相对薄弱的后部结构以及内收位这两个因素，或许可以解释我们的一个标本中所观察到的后脱位情况。
