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Hemi-hamate arthroplasty outcomes: a single-centre experience.

Christie Brennan1, Dallan Dargan1, James Haeney1

  • 1Plastic and Reconstructive Surgery Department, Hull University Teaching Hospitals NHS Trust, Castle Hill Hospital, Cottingham, Hull, UK.

The Journal of Hand Surgery, European Volume
|November 21, 2023
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Summary

Hemi-hamate arthroplasty outcomes were studied. A palmar cortical step from the graft reduced finger joint motion compared to a flush cortex at early follow-up.

Keywords:
Interphalangeal joint of fingerautograftsfracture dislocationhemi-hamate arthroplasty

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Area of Science:

  • Orthopedic surgery
  • Hand surgery
  • Biomedical engineering

Background:

  • Hemi-hamate arthroplasty is a surgical procedure for certain hand injuries.
  • Graft placement technique can influence surgical outcomes.
  • Proximal interphalangeal joint (PIPJ) range of motion is a key functional measure.

Purpose of the Study:

  • To evaluate the outcomes of hemi-hamate arthroplasty.
  • To determine the impact of graft-related cortical step on PIPJ range of motion.

Main Methods:

  • Retrospective observational study design.
  • Evaluation of patient outcomes following hemi-hamate arthroplasty.
  • Comparison of PIPJ range of motion based on palmar cortex morphology (step vs. flush).

Main Results:

  • A palmar cortical step, resulting from the osteochondral graft, was associated with significantly reduced PIPJ range of motion (62°).
  • A flush palmar cortex was associated with greater PIPJ range of motion (83°) at early follow-up.
  • The difference in range of motion was statistically significant (p=0.006).

Conclusions:

  • The technique of graft placement in hemi-hamate arthroplasty impacts early functional outcomes.
  • Minimizing a palmar cortical step may be important for optimizing PIPJ motion after this procedure.