Surgical Interventions for Chronic Ulnar Collateral Ligament Injuries of the Thumb: A Systematic Review

Background: There is no consensus for the appropriate surgical management of symptomatic chronic ulnar collateral ligament (UCL) injuries of the thumb. The aim of this study is to systematically review the treatment of chronic thumb metacarpophalangeal (MCP) joint UCL injuries to determine the optimal approach to treatment. Methods: A systematic review of PubMed, Medline, Embase and ePub Ahead of Print was performed in accordance with Preferred Reporting of Items in Systematic Review and Meta-Analysis (PRISMA) guidelines. Results: Data from 11 studies using various surgical techniques in 245 thumbs were heterogenous and meta-analysis of results not possible. These data were qualitatively assessed. Direct repair, reconstruction with free tendon grafts and arthrodesis all demonstrated favourable outcomes with patient-reported outcome measures (PROMs). Conclusions: Direct repair can be safely performed more than 2 months following injury. Arthrodesis may be considered in heavy manual labourers or those with osteoarthrosis. Tendon grafting is safe, yet the optimal type and configuration are yet to be determined for reconstructive methods. Level of Evidence: Level III (Therapeutic).