Kim H-J, Kim P-T, Lee H-J, Deslivia M F
Department of Orthopaedic Surgery, Kyungpook National University Hospital, 130 Dongduk-ro, Jung-gu, 41944 Daegu, South Korea.
Daegu Park's Hospital, Daegu, South Korea.
Orthop Traumatol Surg Res. 2017 Apr;103(2):319-321. doi: 10.1016/j.otsr.2016.12.008. Epub 2017 Jan 10.
Snapping elbow is a rare condition, which has various possible causes such as impinged plica, annular ligament, or other extra-articular causes. We report a case of 15-year-old boy who had snapping elbow and sudden-onset flexion contracture of the elbow. Simple radiographs showed bilateral anterior dislocation of hypoplastic radial heads. Magnetic resonance images with the elbow extended as much as possible showed that the annular ligament hemmed the dislocated radial neck. By surgical incision of the annular ligament which checkreined the radial neck, the patients could regain full extension of the elbow. We recommend careful consideration of surgical excision of ligamentous structure which blocks extension in the patients who have history of snapping elbow with congenital radial head dislocation.
弹响肘是一种罕见的病症，有多种可能的病因，如皱襞、环状韧带受压或其他关节外病因。我们报告一例15岁男孩，患有弹响肘和突然出现的肘关节屈曲挛缩。简单的X线片显示双侧发育不全的桡骨头前脱位。尽可能伸直肘关节的磁共振成像显示环状韧带将脱位的桡骨颈包绕。通过手术切开限制桡骨颈的环状韧带，患者肘关节可恢复完全伸直。对于有先天性桡骨头脱位伴弹响肘病史的患者，我们建议仔细考虑手术切除阻碍伸直的韧带结构。
