Ben·nett frac·ture

(ben'ĕt),

fracture dislocation of the first metacarpal bone at the carpal-metacarpal joint.

Farlex Partner Medical Dictionary © Farlex 2012

Bennett fracture

An intra-articular fracture/dislocation of the ulnar aspect of thumb/1st metacarpal that extends into the carpometacarpal joint, in which a small fragment of the metacarpal bone stays articulated with the trapezium.

Mechanism
Striking a hard object with closed fist, forced thumb abduction—e.g., fall on the thumb, as occurs in a bike fall.

Management
Precise reduction of fracture.

Complications
Oosteoarthritis, pseudoarthrosis.

Prognosis
Post-traumatic osteoarthritis is the norm if the fracture is allowed to heal in the displaced position.

Bennett fracture

Orthopedics An intraarticular fracture/dislocation of the ulnar aspect of thumb/1^st metacarpal, in which a small fragment of the metacarpal continues to articulate with the trapezium Mechanism Forced thumb abduction Complications Pseudoarthrosis Prognosis Better than Rolando fracture. See Fracture. Cf Rolando fracture.

Ben·nett frac·ture

(ben'ĕt frak'shŭr)

Dislocation and break of the first metacarpal bone at the carpal-metacarpal joint.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Bennett,

Edward H., Irish surgeon, 1837-1907.

Bennett fracture - fracture dislocation of the first metacarpal bone at the carpometacarpal joint.

Bennett lesion

Bennett nail biopsy

Bennett posterior shoulder approach

Bennett retractor

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References in periodicals archive

Table 1 Gedda Classification of Bennett Fractures (2) Type 1 Large single ulnar fragment and subluxation of the metacarpal base Type 2 Impaction fracture without subluxation of the thumb metacarpal Type 3 Small ulnar avulsion fracture fragment in association with metacarpal dislocation

The majority of Bennett fractures occur in men, with more than half occurring in the dominant hand.

(6,21) However, in 1990, Livesey reported a series of 17 Bennett fractures treated with casting with 26-year follow-up.

In 2012 Greeven reported on seven Bennett fractures with 2-year follow-up treated with transmetacarpal pinning.

(23,24) Capo and colleagues simulated Bennett fractures in eight cadaveric specimens and then compared the articular reduction using fluoroscopy and direct visualization of the joint after CRPP.

Bennett fractures: a review of management