APB Transfer Stabilizes Chronic Thumb RCL - Summary - MDSpire

APB Transfer Stabilizes Chronic Thumb RCL

Case report describes return to activity and improved stability after tendon reconstruction

  • By

  • Andrea Surnit

  • April 6, 2026

  • 4 min

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Objective:

To evaluate the effectiveness of modified abductor pollicis brevis tendon transfer in reconstructing chronic radial collateral ligament injuries of the thumb metacarpophalangeal joint, particularly in cases diagnosed late.

Key Findings:
  • Improved stability and satisfactory alignment were reported.
  • Both patients resumed daily activities and work within a specified timeframe.
  • No complications or radiographic failures were noted at follow-up (2 years for one patient and 6 months for the other).
Interpretation:

The modified APB tendon transfer technique appears to be a reliable alternative for chronic RCL injuries, potentially reducing donor-site morbidity and improving patient outcomes.

Limitations:
  • Small sample size of only two patients.
  • Lack of a comparison group.
  • Short follow-up duration for one patient.
  • Absence of standardized outcome measures.
Conclusion:

The technique offers reproducible functional outcomes, such as improved stability and alignment, and may simplify the surgical procedure.

Sources:

Original Source(s)

APB Transfer Stabilizes Chronic Thumb RCL

  • by Andrea Surnit

  • April 6, 2026

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