Maruyama Masahiro, Takahara Masatoshi, Kikuchi Noriaki, Ito Kazuo, Watanabe Tadayoshi, Ogino Toshihiko
Department of Orthopaedic Surgery, Yamagata University School of Medicine, Yamagata City, Japan.
J Hand Surg Am. 2010 Jun;35(6):981-5. doi: 10.1016/j.jhsa.2010.02.026. Epub 2010 Apr 24.
An 11-year-old boy with congenital radial head dislocation experienced painful snapping of his left elbow upon movement. He had no previous history of trauma. A plain radiograph of his left elbow showed anterior dislocation of the radial head and flexion deformity of the hypoplastic radial neck. Arthroscopy showed that the snapping of the elbow occurred between the annular ligament and the dislocated radial head during elbow flexion and extension. After the annular ligament was released, the snapping immediately disappeared. Five years after the surgery, the patient has no pain or snapping upon elbow movement.
一名11岁先天性桡骨头脱位男孩，活动时左肘出现疼痛性弹响。他既往无外伤史。左肘X线平片显示桡骨头前脱位及发育不良的桡骨颈屈曲畸形。关节镜检查显示，屈伸肘时，弹响发生于环状韧带与脱位的桡骨头之间。环状韧带松解后，弹响立即消失。术后5年，患者肘部活动时无疼痛或弹响。
