Erb R E, Steele J R, Nance E P, Edwards J R
Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN 37232-2675, USA.
AJR Am J Roentgenol. 1995 Nov;165(5):1215-9. doi: 10.2214/ajr.165.5.7572506.
Traumatic anterior dislocation of the hip represents 11% of all hip dislocations and is classified into superior and inferior types [1]. Whereas inferior anterior hip dislocation is easily recognized on an anteroposterior radiograph of the pelvis, the radiographic appearance of superior anterior hip dislocation is less straightforward, often leading to an initial misdiagnosis of posterior hip dislocation. Misdiagnosis of the direction (anterior versus posterior) of a hip dislocation can result in failed closed reduction or an improper surgical approach to open reduction. In addition, recognition of associated impaction fractures is important, as patients with this finding have a greater tendency to develop traumatic arthritis [2, 3]. This pictorial essay, which is based on our experience with 20 cases of anterior hip dislocation, including five of the rare superior type, illustrates the spectrum of radiographic findings and distinguishing features associated with anterior hip dislocation.
创伤性髋关节前脱位占所有髋关节脱位的11%，可分为上脱位和下脱位两种类型[1]。虽然髋关节前下脱位在骨盆前后位X线片上易于识别，但髋关节前上脱位的X线表现则不那么直观，常常导致最初误诊为髋关节后脱位。髋关节脱位方向（前脱位与后脱位）的误诊可能导致闭合复位失败或切开复位的手术入路不当。此外，识别相关的嵌插骨折很重要，因为有此发现的患者发生创伤性关节炎的倾向更大[2,3]。这篇图谱文章基于我们对20例髋关节前脱位（包括5例罕见的上脱位类型）的经验，阐述了髋关节前脱位相关的一系列X线表现及鉴别特征。
