Pre-axial polydacytly

Case contributed by Dr Ian Bickle

Presentation

Adult worker injured hand. Fracture?

Patient Data

Age: 40 years
Gender: Male
X-ray

The thumb is duplicated from the MCP joint with duplication of the phalanges which both articulate at the MCP joint.

Case Discussion

Pre-axial polydactyly refers to polydactyly where the additional digit is towards the first digit of the hand (radial side).

In this case the thumb is duplicated from the metacarpophalangeal joint.

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