Kim Chul-Ho, Lee Seul Ki, Kim Jun Ho, Yoon Pil Whan
Department of Orthopaedic Surgery, Gachon University Gil Medical Center, Incheon, Republic of Korea.
Department of Radiology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Hip Int. 2022 Jan;32(1):118-123. doi: 10.1177/1120700020944139. Epub 2020 Jul 23.
With the increasing sport population, the number of patients with external snapping hip (ESH) has also increased. To detect and visualise pathological soft tissue changes, magnetic resonance imaging (MRI) has been 1 of the most useful modalities. However, only limited studies have investigated MRI and its clinical value in the treatment of ESH in the past.
Between May 2017 and November 2018, 104 patients were diagnosed with ESH at our institution. We excluded patients who did not undergo an MRI ( = 11), had complaint of bilateral symptom ( = 17), were not diagnosed hip problems previously = 2), and were lost-follow-up within 6 months ( = 19). After applying the exclusion criteria, 55 patients remained. We classified the patients into 2 groups according-MRI findings: tensed iliotibial band (ITB) and hypertrophied gluteus maximus (GM). We investigated the clinical findings, such as mean age, symptom duration, pain score, grading based on symptom severity, and other radiological findings such as soft tissue signal change and ITB thickness. The variables were compared between the groups.
Between the 2 groups defined by MRI findings, the group characterised by tense ITB showed a relatively short symptom duration than the hypertrophied GM group ( < 0.001). No significant differences in the other variables were found between the groups.
ESH has 2 types of MRI features. Compared with the hypertrophied GM group, the tense ITB group showed a shorter symptom duration and a more reversible status.
随着运动人群的增加，臀肌挛缩症（ESH）患者的数量也在增加。为了检测和可视化病理性软组织变化，磁共振成像（MRI）一直是最有用的检查方式之一。然而，过去仅有有限的研究探讨了MRI及其在ESH治疗中的临床价值。
2017年5月至2018年11月期间，我院诊断出104例ESH患者。我们排除了未进行MRI检查的患者（n = 11）、有双侧症状主诉的患者（n = 17）、既往未诊断出髋关节问题的患者（n = 2）以及在6个月内失访的患者（n = 19）。应用排除标准后，剩余55例患者。我们根据MRI结果将患者分为两组：紧张的髂胫束（ITB）组和肥厚的臀大肌（GM）组。我们调查了临床结果，如平均年龄、症状持续时间、疼痛评分、基于症状严重程度的分级，以及其他影像学结果，如软组织信号变化和ITB厚度。对两组间的变量进行比较。
在由MRI结果定义的两组之间，以紧张的ITB为特征的组比肥厚的GM组症状持续时间相对较短（P < 0.001）。两组间其他变量未发现显著差异。
ESH有两种MRI特征。与肥厚的GM组相比，紧张的ITB组症状持续时间较短且病情更具可逆性。
