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Floating thumb metacarpal in a motorcyclist: A case report
T Messaoudi1, M Errhaimini1, M Ghoubach1
1Service de traumatologie-orthopédie, CHU Mohammed VI, Marrakech, Morocco.
Chirurgie De La Main
|March 15, 2015
Summary
This case report details a rare "floating thumb metacarpal" injury, involving simultaneous dislocation of thumb joints. Closed reduction and immobilization led to excellent functional recovery after 24 months.
Area of Science:
- Orthopedic Surgery
- Traumatology
- Hand Surgery
Background:
- Simultaneous dislocation of the carpometacarpal (CMC) and metacarpophalangeal (MP) joints of the thumb, termed the "floating thumb metacarpal," is an exceptionally rare injury.
- Understanding the biomechanics of this injury is crucial for effective management.
Observation:
- A 47-year-old motorcyclist sustained a simultaneous CMC and MP joint dislocation of the thumb.
- The injury mechanism, likely related to high-energy trauma during a motorcycle accident, was analyzed.
Findings:
- The patient underwent successful closed reduction of both the CMC and MP joints.
- Immobilization with a cast was applied post-reduction.
- Excellent functional outcomes were observed at the 24-month follow-up.
Implications:
- This case highlights the successful non-operative management of a rare thumb joint dislocation.
- The findings support closed reduction and cast immobilization as an effective treatment strategy for the "floating thumb metacarpal."
- Further research into the specific mechanisms and optimal treatment protocols for this injury is warranted.
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