Hemi-hamate arthroplasty outcomes: a single-centre experience

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.