A Bennett fracture is a fracture-dislocation of the 1st carpometacarpal (CMC) joint (between the metacarpal and the carpal bones at the wrist). There is a fracture of the base of the metatarsal (the bone from the wrist to the thumb), as well as a subluxation of the joint.
This is a serious injury which if not treated correctly can cause permanent disability, with particular problems when bringing the thumb across the palm of the hand and pinching with the index or middle fingers.

The most common cause of a Bennett fracture is a punch with a clenched fist. It is also common in Football goal keepers and Rugby or American Football players.

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Mr. Elliot Sorene MBBS FRCS (Tr & Orth) EDHS
is Consultant Orthopaedic, Hand & Upper Limb Surgeon at the following establishments:

The Hospital of St John & St Elizabeth 60 Grove End Road London NW8 9NH
The London Clinic 5 Devonshire Place London W1G 6HL
Spire Bushey Hospital Heathbourne Road Watford, Hertfordshire WD23 1RD

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