Schoenecker P L, Bitz M, Witeside L A
J Bone Joint Surg Am. 1978 Oct;60(7):899-904.
Quantitative studies of femoral head blood flow by the hydrogen washout technique with the hips in various positions of immobilization were determined. Immobilization in flexion consistently resulted in the highest rate of femoral head blood flow. A position of relaxed abduction seemed to slightly, but significantly, decrease the rate of blood flow. The position of forced frog-leg abduction and forced internal rotation obliterated or drastically reduced circulation in the femoral head. We think that the ischemia of forced acute immobilization is secondary to compression of the immature cartilaginous femoral head. These experimental data further indicate the importance of the selected position of immobilization in the treatment of congenital dislocated hips as a cause of iatrogenic avascular necrosis.
通过氢洗脱技术对处于不同固定位置的髋关节进行股骨头血流的定量研究。持续屈曲位固定始终导致股骨头血流速率最高。放松外展位似乎会轻微但显著降低血流速率。强迫蛙腿式外展和强迫内旋位会使股骨头血液循环消失或急剧减少。我们认为，强迫急性固定导致的缺血是由于未成熟的软骨股骨头受到压迫所致。这些实验数据进一步表明，在先天性髋关节脱位治疗中，作为医源性缺血性坏死的一个原因，固定位置的选择至关重要。
