3.0 T MRI findings of femoroacetabular impingement
10.3760/cma.j.issn.0253-2352.2010.10.003
- VernacularTitle:股骨髋臼撞击症的3.0T MRI影像分析
- Author:
Huibo ZHANG
;
Min LIU
;
Li WANG
;
Tao JIANG
;
Hui QU
- Publication Type:Journal Article
- Keywords:
Femur;
Acetabulum;
Wounds and injuries;
Hip joint;
Magnetic resonance imaging
- From:
Chinese Journal of Orthopaedics
2010;30(10):931-934
- CountryChina
- Language:Chinese
-
Abstract:
Objective The purpose of our study is to evaluate high-resolution 3.0 T MRI in the identification of finding in patients with a clinical diagnosis of femoroacetabular impingement (FAI). Methods From June 2008 to May 2010, 54 consecutive patients with clinically diagnostic FAI received an high-resolution 3.0 T MR scan (Siemens AG, Germany), including 38 males and 16 females with an average age of 33.5 years (range, 18-50). All cases were assigned into 3 groups according to the morphology changes of the hip joint: Group Cum, Group Pincer, and Group Normal. The frequency of abnormal signs in 3 groups was calculated. Nonparametric tests by SPSS were used in data analysis. Results Forty-four patients (81.5%, 44/54) showed acetabular labrum disorders, 35 patients (64.8%, 35/54) showed femoral-acetabular cartilage lesions on MRI, 19 patients (35.2%, 19/54) showed arthroedema, 14 patients (25.9%, 14/54) showed femoralacetabular bone disorders, 4 patients (7.4%, 4/54) showed articular capsule and ligaments disorders. There was no statistically significant in the frequency of abnormal sign in MR1 between male and female. The frequency of acetabular labrum disorders, femoral-acetabular cartilage lesions and femoral-acetabular bone lesions in Group Cum was more than that of Group Pincer and Group Normal. The frequency of acetabular labrum disorders was the most disorders (Group Cum 88.5%, Group Pincer 77.8%, Group Normal 70.0%),next high-frequency was acetabular cartilage lesions. Conclusion 3.0 T MRI provides a useful assessment of patients in whom a FAI is clinically diagnosed. A high-resolution, nonarthrographic technique can provide preoperative information. Acetabular labrum disorders and femoral-acetabular cartilage lesions maybe characterized as an earlier period of FAI.
