Ikumi Akira, Hara Yuki, Yoshii Yuichi
Department of Orthopedic Surgery and Sports Medicine, Tsukuba University Hospital Mito Clinical Education and Training Center, Mito, Japan.
Department of Orthopedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
Shoulder Elbow. 2023 Aug;15(4):442-447. doi: 10.1177/17585732211039459. Epub 2021 Oct 20.
Traumatic radial head dislocation without a bone-associated lesion is uncommon, and irreducible cases are rare. We herein present a case of isolated irreducible anteromedial radial head dislocation due to anterior capsule and annular ligament interposition in a 16-year-old female patient. The patient was injured when she was thrown by an opponent during a judo match, and her right elbow was outstretched, combined with forearm pronation. Open reduction was required because of soft tissue interposition into the radiocapitellar joint. The ruptured anterior capsule and annular ligament were repaired using the overlapping suture technique; hence, the radial head was stabilized. At 3.5 years follow-up, the patient had satisfactory elbow function, and redislocation did not occur; however, mild degenerative changes were observed on radiographs. We discussed the injury mechanism using anatomical features in this case and previous literature.
无骨相关损伤的创伤性桡骨头脱位并不常见，而不可复位的病例则更为罕见。我们在此报告一例16岁女性患者因前侧关节囊和环状韧带嵌顿导致的孤立性不可复位的桡骨头前内侧脱位。该患者在柔道比赛中被对手摔倒时受伤，右肘伸直，合并前臂旋前。由于软组织嵌入桡骨头关节，需要进行切开复位。采用重叠缝合技术修复破裂的前侧关节囊和环状韧带，从而稳定了桡骨头。随访3.5年时，患者肘部功能良好，未发生再脱位；然而，X线片上观察到轻度退变改变。我们结合本例的解剖学特征和既往文献对损伤机制进行了讨论。
