Abstract：
Background: Untreated or insufficiently treated collateral ligament injuries of the thumb metacarpophalangeal (MP) joint can lead to instability or even osteoarthritis. Arthrodesis is one of the treatment options available for the treatment of the sequelae of collateral ligament injuries. The objective of our study was to evaluate the radiological, clinical and functional outcomes of MP joint arthrodesis performed for sequelae of collateral ligament injuries. Methods: We conducted a retrospective, single-centre study and reviewed the files of patients who had a thumb MP joint arthrodesis following a collateral ligament injury between 2011 and 2019. We collected patient\'s demographic data and the results of the radiological and clinical examinations. Results: Eighteen patients were included in the study. The average age was of 53.6 years and the time between injury to arthrodesis averaged 7 years. Four patients (22%) had nonunion. In the remaining 14 patients with solid union at an average of 72 months follow-up, the visual analogue pain score at rest was 0.14, the thumb opposition was 82%, grip strength 85%, tip pinch 92% and key pinch 79% of the contralateral side. Conclusions: The clinical and functional results of patients with a successful arthrodesis are satisfactory with restoration of good grip and pinch strength. Despite a lack of thumb MP joint flexion, stability allowed force transmission and may be preferred for manual workers. Level of Evidence: Level IV (Therapeutic).
摘要：
背景：拇指掌指关节（MP）的副韧带损伤未经治疗或治疗不足可导致不稳定甚至骨关节炎。关节固定术是可用于治疗副韧带损伤后遗症的治疗选择之一。我们研究的目的是评估放射学，MP关节固定术治疗侧支韧带损伤后遗症的临床和功能结果。方法：我们进行了回顾性研究，单中心研究并回顾了2011年至2019年间副韧带损伤后拇指MP关节固定术患者的档案.我们收集了患者的人口统计学数据以及放射学和临床检查的结果。结果：18例患者纳入研究。平均年龄为53.6岁，关节固定术受伤之间的时间平均为7年。4例患者（22%）出现骨不连。在其余14例患者中，在平均72个月的随访中，静息时的视觉模拟疼痛评分为0.14，拇指对立为82%，握力85%,尖端捏合92%，钥匙捏合对侧79%。结论：成功的关节固定术患者的临床和功能效果令人满意，并恢复了良好的握力和夹紧强度。尽管缺乏拇指MP关节屈曲，稳定性允许力传递，可能是体力劳动者的首选。证据级别：IV级（治疗）。
