Bennett's fracture
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Top Contributors - Claire Knott, Annelies Noppe, Nikhil Benhur Abburi, Lucinda hampton, Kim Jackson and WikiSysop
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Definition/Description[edit | edit source]
Bennett fracture dislocation is an intra-articular fracture of the base of the first metacarpal which leads to dislocation of the first carpometacarpal joint. The fracture involves the joint between the first metacarpal and the proximate carpal bone, the trapezium. The fracture is unstable and has an inadequate reduction/fixation which leads to long term consequences such as osteoarthritis, weakness, or loss of function of the first carpometacarpal joint.1 This joint is called the carpometacarpal (CMC) joint, and is normally stabilized by a ligament called the deep ulnar ligament. Due to the position of the fracture fragment there is some detachment of this ligament from the bone, causing a dislocation of the joint.2
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