坐骨-股骨撞击相关MSCT影像分析

目的 探讨无症状人群坐骨-股骨间隙（IFS）宽度范围，并分析生理指标（年龄、性别、身高、体质量、坐骨间距、偏心距、小转子高径等）对其的影响。方法 回顾性分析61例无髋关节疼痛症状者的盆腔MSCT扫描资料，测量并记录髋关节的IFS宽度、坐骨间距、偏心距、小转子高径、头颈轴长、股骨颈角、坐骨角，并分析IFS宽度与生理指标的相关性。结果 男性受检者的身高、体质量及IFS宽度、偏心距、小转子高径、头颈轴长均大于女性（P均<0.05），坐骨间距、坐骨角均小于女性（P均<0.001）。IFS宽度与头颈轴长呈正相关（P<0.001），与年龄、坐骨间距、股骨颈角、坐骨角均呈负相关（P均<0.001），与身高、体质量、偏心距、小转子高径均无相关性（P均>0.05）。结论 MSCT可应用于坐骨-股骨撞击相关影像学测量与评估，女性骨盆结构与男性有所不同，这些差异可能是导致女性更易罹患坐骨-股骨撞击综合征的原因。

Assessment of ischiofemoral impingement related image anatomy with MSCT

Objective To discuss the width of ischiofemoral space (IFS) in asymptomatic adults and the related influence of physiological parameters (including age, sex, height, body weight, intertuberous distance, femoral offset, lesser trochanter height, etc). Methods Pelvic MSCT data of 61 adults without hip pain symptom were analyzed retrospectively. The indexes were measured, including the width of IFS, intertuberous distance, femoral offset, lesser trochanter height, femoral neck long axis, femoral neck angle and ischial angle. The correlation between the width of IFS and the physiological parameters was analyzed. Results The height, body weight, width of IFS, femoral offset, lesser trochanter height and femoral neck long axis of male subjects were larger than those of female subjects (all P<0.05), while the intertuberous distance and ischial angle of male subjects were smaller than those of female subjects (both P<0.001). There was positive correlation between the width of IFS and femoral neck long axis (P<0.001). Negative correlation was found between the width of IFS and the age, intertuberous distance, femoral neck angle, ischial angle, respectively (all P<0.001). No correlation between IFS and the height, body weight, femoral offset, lesser trochanter height was found (all P>0.05). Conclusion MSCT can be applied for measurement and evaluation of relative anatomy images of ischiofemoral impingement. The structure of pelvis is different between male and female, and this may be the reason of why female patients are more likely to suffer from ischiofemoral impingement.