Castlereagh Imaging, Sydney, New South Wales, Australia.
Department of Orthopaedics, Concord Repatriation General Hospital, Sydney, New South Wales, Australia.
J Med Imaging Radiat Oncol. 2022 Sep;66(6):805-808. doi: 10.1111/1754-9485.13394. Epub 2022 Feb 27.
Elbow dislocation is the second most common type of joint dislocation in adults and the most common joint dislocation in children. These dislocations are commonly associated with significant soft tissue injury and/or fractures. Anterior dislocation of the radio-capitellar articulation is uncommon. Failure of relocation of the radial head due to soft tissue imposition requiring open reduction is rare, however, is extremely important to recognise clinically and radiologically. This case report describes a case of anterior dislocation of the radio-capitellar joint due to entrapment of the brachialis tendon lateral to the radial head and discusses the radiological assessment and the spectrum of causes of a clinically irreducible radio-capitellar joint. Misdiagnosis of a dislocation or failed reduction may result in long-term functional sequelae for the patient.
肘关节脱位是成人中第二常见的关节脱位类型，也是儿童中最常见的关节脱位类型。这些脱位通常与明显的软组织损伤和/或骨折有关。桡骨头-尺骨滑车关节的前脱位并不常见。由于软组织限制导致桡骨头无法复位而需要切开复位的情况很少见，但在临床上和放射学上识别这种情况非常重要。本病例报告描述了一例因肱二头肌肌腱嵌顿于桡骨头外侧而导致桡骨头-尺骨滑车关节前脱位的病例，并讨论了临床上不可复位的桡骨头-尺骨滑车关节的放射学评估和一系列病因。对脱位或复位失败的误诊可能会给患者带来长期的功能后遗症。
