Classification of the Bennett's fracture

Classification of the Bennett's fracture
ICD-10	S42.2-S42.4
ICD-9	812
eMedicine	emerg/199  orthoped/271 orthoped/199

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohammadmain Rezazadehsaatlou[2].

Overview

The Bennett fracture is an intraarticular fracture that separates the palmar ulnar aspect of the first metacarpal base from the remaining first metacarpal and known as the most common fracture found in the base of the thumb. The early diagnosis and treatment are imperative to prevent loss of function of this highly mobile human joint system. In 1882, Edward Hallaran Bennett, described the fracture of the base of the thumb.

Classification

Gredda Classification of the Bennett's fracture

Type	Features
I	a fracture with a single ulnar fragment and subluxation of the metacarpal base
II	an impaction fracture without subluxation of the first metacarpa
III	an injury with a small ulnar avulsion fragment in association with metacarpal dislocation

External links

• Template:GPnotebook
• Template:WhoNamedIt
• http://www.med.wayne.edu/diagRadiology/TF/MS/MS18.html
• http://www.wheelessonline.com/ortho/bennetts_fracture_dislocation