单侧髋高分辨3.0T MRI对臼唇撕裂的诊断

摘要

Objective To evaluate the value of high-resolution hip MRI for diagnosing acetabular labrum tears. Methods 3.0 T hip MRI of 122 patients was independently reviewed by two radiologists and compared with the results of arthroscopy. Results Acetabular labrum tear was arthroscopically diagnosed in 87 of the 122 patients. The sensitivity and specificity of MRI were 60.92%and 74.29% (radiologist A), 64.37% and 74.29% (radiologist B), respectively, with good consistency between the two observers (Kappa value=0.645). Conclusion High-resolution hip MRI has moderate sensitivity and high positive predictive value for diagnosing acetabular labrum tears. Paralabral cysts are the specific MRI manifestations.%目的：评价单侧髋关节高空间分辨率3．0 T MRI对臼唇撕裂的诊断价值。方法122例患者同时接受了3．0 T单侧髋关节高空间分辨率MRI和其后的髋关节镜手术，由两名放射医师独立回顾分析所有髋关节MR图像，分析结果，并与髋关节镜手术比较。结果122例患者中，髋关节镜证实臼唇撕裂87例，其余35例无臼唇撕裂。单髋关节3．0 T MRI评估臼唇撕裂的敏感度和特异度分别为60．92％（53／87）和74．29％（26／35）（医师甲），64．37％（56／87）和74．29％（26／35）（医师乙），观察者间一致性好（Kappa值为0．655）。11例臼唇旁囊肿仅见于臼唇撕裂的病例。结论单侧髋关节高空间分辨率3．0 T MRI对臼唇撕裂的敏感度中等，特异度较高，臼唇旁囊肿为臼唇撕裂的特异征象。