Imatani J, Miyake Y, Nakatsuka Y, Akazawa H, Mitani S
Ehime Disabled Children's Hospital, Japan.
J Pediatr Orthop. 1995 May-Jun;15(3):337-41. doi: 10.1097/01241398-199505000-00015.
We studied coxa magna after open reduction of developmental hip dislocation, including the etiology, incidence, and influence on the long-term results and acetabular development. Forty-seven hips in 47 patients were radiographically examined for at least 10 years, and another 20 hips in 20 patients were examined arthrographically at an early stage after open reduction. At follow-up, the incidence of coxa magna, which was defined as a femoral head with a size > or = 20% greater than the opposite side, was 34.0%, and that seemed to be one of factors that worsened the long-term results. One of the most important causes of coxa magna is to overwiden the acetabular capacity by excising the limbus; another cause is the surgical invasion and synovitis of the hip joint after operation.
我们对发育性髋关节脱位切开复位后的大转子进行了研究，包括其病因、发生率以及对长期疗效和髋臼发育的影响。对47例患者的47个髋关节进行了至少10年的X线检查，另外对20例患者的20个髋关节在切开复位后的早期进行了关节造影检查。随访时，大转子的发生率（定义为股骨头大小比另一侧大20%或更大）为34.0%，这似乎是导致长期疗效恶化的因素之一。大转子最重要的原因之一是通过切除髋臼缘过度扩大髋臼容量；另一个原因是手术后髋关节的手术创伤和滑膜炎。
