Okano Kunihiko, Kawahara Natsumi, Chiba Ko, Shindo Hiroyuki
Department of Orthopedic Surgery, Graduate School of Biomedical Science, Nagasaki University, Nagasaki, Japan.
Clin Orthop Relat Res. 2008 Sep;466(9):2209-16. doi: 10.1007/s11999-008-0372-7. Epub 2008 Jul 12.
Radiographic evaluation of preoperative joint space width is believed important to predict the long-term results of osteotomy. We asked whether joint space width differs in the supine and standing positions in patients with Crowe Type-1 osteoarthritis (OA) secondary to developmental dysplasia of the hip (DDH). Joint space width was measured in the supine and standing positions in 146 women and 16 men (231 hips) with OA. Subjects had a mean age of 46.7 years (range, 22-59 years). Differences were seen on radiographs in joint space width between supine (2.35 +/- 1.65 mm; range, 0.1-6.2 mm) and standing (2.04 +/- 1.78 mm; range, 0.0-5.9 mm). In 27 of 172 hips with greater than 1 mm joint space in the supine position, joint space width was decreased by greater than 1 mm in the standing position. To evaluate preoperative joint space width in patients scheduled for osteotomy, radiographs should be obtained with the patient in the standing position.
Level IV, diagnostic study. See the Guidelines for Authors for a complete description of levels of evidence.
术前关节间隙宽度的影像学评估被认为对预测截骨术的长期效果很重要。我们探讨了继发于发育性髋关节发育不良（DDH）的Crowe 1型骨关节炎（OA）患者仰卧位和站立位时的关节间隙宽度是否存在差异。对146名女性和16名男性（231个髋关节）OA患者在仰卧位和站立位测量关节间隙宽度。研究对象的平均年龄为46.7岁（范围22 - 59岁）。仰卧位（2.35±1.65mm；范围0.1 - 6.2mm）和站立位（2.04±1.78mm；范围0.0 - 5.9mm）的关节间隙宽度在X线片上存在差异。在仰卧位关节间隙大于1mm的172个髋关节中，有27个在站立位时关节间隙宽度减少超过1mm。为评估计划进行截骨术患者的术前关节间隙宽度，应在患者站立位时拍摄X线片。
IV级，诊断性研究。有关证据水平的完整描述，请参阅作者指南。
