Krishnan Shibu P, Carrington R W J, Mohiyaddin Syed, Garlick Nicholas
Royal Free Hospital, London.
J Arthroplasty. 2006 Apr;21(3):409-12. doi: 10.1016/j.arth.2005.10.021.
This study defines normal bilateral variations in offset and hip center location on pelvic radiographs. The relationship of the femoral head center to the tip of the greater trochanter and that of offset to medullary canal diameter are also defined. Measurements of the offset, hip center location, height of the tip of the greater trochanter from the femoral head center, and medullary canal diameter were carried out on 100 normal pelvic radiographs. The offset of one hip was found to predict that of the contralateral hip to within 4.62 mm with 95% confidence. Their hip center locations differed by 6.3 mm. The tip of the greater trochanter was, on average, 8 mm higher than the femoral head center. Although offset generally increased with an increase in medullary canal diameter, frequent discrepancies occurred in their relationship.
本研究定义了骨盆X线片上偏移和髋关节中心位置的正常双侧变异。还定义了股骨头中心与大转子尖的关系以及偏移与髓腔直径的关系。对100张正常骨盆X线片进行了偏移、髋关节中心位置、大转子尖距股骨头中心的高度以及髓腔直径的测量。发现一侧髋关节的偏移能够在95%置信度下预测对侧髋关节的偏移，误差在4.62毫米以内。它们的髋关节中心位置相差6.3毫米。大转子尖平均比股骨头中心高8毫米。虽然偏移通常随髓腔直径的增加而增加，但它们之间的关系经常出现差异。
