Clinical Report: APB Transfer Stabilizes Chronic Thumb RCL
Overview
Reconstruction of chronic radial collateral ligament injuries of the thumb metacarpophalangeal joint using a modified abductor pollicis brevis tendon transfer was associated with improved stability, satisfactory alignment, and return to daily activities in two patients, with no reported complications or radiographic failure at final follow-up (2 years in one patient and 6 months in the other), despite a 20° reduction in metacarpophalangeal joint flexion compared with the uninjured side.
Background
Radial collateral ligament (RCL) injuries of the thumb metacarpophalangeal (MCP) joint are common yet often diagnosed late, leading to chronic instability. Traditional repair methods may not be viable, necessitating reconstructive techniques. The abductor pollicis brevis (APB) tendon transfer presents a promising alternative that may reduce donor-site morbidity.
Data Highlights
The report includes specific findings such as a 20° reduction in MCP joint flexion compared to the uninjured side.Key Findings
Two male patients aged 58 and 66 underwent APB tendon transfer for chronic RCL injuries. Both patients experienced improved stability and alignment post-surgery with no complications at follow-up (2 years for one patient, 6 months for the other). There was a 20° reduction in MCP joint flexion compared to the uninjured side. Patients reported satisfaction with thumb appearance and stability, returning to work and daily activities within 3 months. The technique may avoid donor-site morbidity compared to free tendon grafts.Clinical Implications
The modified APB tendon transfer technique offers a reliable surgical option for chronic RCL injuries, potentially simplifying the procedure and minimizing complications. However, clinicians should consider the limitations of this study, including the small sample size and lack of standardized outcome measures.
Conclusion
The findings suggest that APB tendon transfer is an effective method for reconstructing chronic RCL injuries, with favorable outcomes in stability and function. Further studies with larger cohorts are needed to validate these results and assess long-term outcomes.
References
- Montanari M, et al., Clinical Case Reports, 2023 -- APB Transfer Stabilizes Chronic Thumb RCL
- Results of Stabilizing the Thumb Carpometacarpal Joint Using an Abductor Pollicis Longus Tendon Strip for Chronic Instability Management
- Archives of Orthopaedic and Trauma Surgery (Springer) — Comparative Analysis of Surgical Interventions for Advanced Rhizarthrosis: Total Joint Replacement Versus Resection Arthroplasty – A Systematic Review.
- Technical Considerations for Dual Mobility Prosthesis in Salvaging the TMC-1 Joint
- Midterm Clinical Outcomes of Elbow LUCL Reconstruction: Insights into Pathogenesis
- Results of Stabilizing the Thumb Carpometacarpal Joint Using an Abductor Pollicis Longus Tendon Strip for Chronic Instability Management
- Comparative Analysis of Surgical Interventions for Advanced Rhizarthrosis: Total Joint Replacement Versus Resection Arthroplasty – A Systematic Review
- Technical Considerations for Dual Mobility Prosthesis in Salvaging the TMC-1 Joint
- Use of an Abductor Pollicis Brevis Tendon Slip for Reconstruction of the Radial Collateral Ligament of the Thumb Metacarpophalangeal Joint: An Anatomical Investigation
- Radial Collateral Ligament Injuries of the Thumb Metacarpophalangeal Joint
- https://www.bssh.ac.uk/_userfiles/pages/files/professionals/BEST%20Guidelines/BEST%20UCL%20Final.pdf
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