Nishii T, Sugano N, Tanaka H, Nakanishi K, Ohzono K, Yoshikawa H
Department of Orthopaedic Surgery, Osaka University Medical School, Suita, Japan.
Clin Orthop Relat Res. 2001 Feb(383):183-90. doi: 10.1097/00003086-200102000-00020.
Three-dimensional magnetic resonance imaging in the coronal and sagittal planes was performed in 25 normal hips of 16 volunteers and 70 dysplastic hips of 50 patients with clinical symptoms but without radiologic joint space narrowing. A high prevalence of cartilage abnormalities was detected, mostly located at the anterosuperior area in the hip: 31 hips (44%) in the acetabular cartilage and five hips (7%) in the femoral cartilage showed a mild to moderate defect of cartilage thickness. The presence of cartilage abnormalities had a statistically significant correlation with age of the patients and severity of hip pain. Of 31 hips with cartilage abnormalities, sagittal magnetic resonance images showed abnormalities in 30 (97%), whereas coronal magnetic resonance images revealed abnormalities only in 11 (35%). A high incidence of cartilage abnormalities in the preradiologic stage suggests the need for more sensitive modalities for early diagnosis. Magnetic resonance imaging in the sagittal plane allows detailed assessment of early cartilage abnormalities.
对16名志愿者的25个正常髋关节以及50名有临床症状但无放射学关节间隙变窄的患者的70个发育不良髋关节进行了冠状面和矢状面的三维磁共振成像检查。结果发现软骨异常的发生率很高，主要位于髋关节的前上区域：髋臼软骨有31个髋关节（44%），股骨软骨有5个髋关节（7%）显示出轻度至中度的软骨厚度缺损。软骨异常的存在与患者年龄和髋关节疼痛的严重程度在统计学上具有显著相关性。在31个有软骨异常的髋关节中，矢状面磁共振图像显示异常的有30个（97%），而冠状面磁共振图像仅显示11个（35%）有异常。放射学前期软骨异常的高发生率表明需要更敏感的方法进行早期诊断。矢状面磁共振成像能够对早期软骨异常进行详细评估。
