Bennett fracture: with subsequent complication

Case contributed by Dr Chris O'Donnell


Bent thumb back. Sustained a Bennett fracture at the base of first metacrapal. Treated surgically with 2 K-wires. Now 12 months later severe pain at the base of the thumb.

Patient Data

Age: 21
Gender: Male

Typical oblique fracture at the base of the 1st metacarpal with displacement and extension into the joint. Fracture pinned and united with slight malalignment.

Findings of osteoarthritis with small osteophytes, bone marrow oedema on either side of the joint, small subarticular cysts and joint fluid. Articular cartilage is irregular in contour.

Case Discussion

This case highlights the importance of accurate reduction and fixation of Bennett fractures as they can go on to rapid  premature osteoarthritis due to articular surface incongruity.

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Case information

rID: 38144
Case created: 8th Jul 2015
Last edited: 21st Nov 2015
Inclusion in quiz mode: Included

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