Thumb injuries are not as common as those occurring in the fingers. The authors present the case of a patient who had an isolated avulsion of the extensor pollicis brevis that resulted in metacarpophalangeal joint instability, with intact radial and ulnar collateral ligament.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6204540PMC
http://dx.doi.org/10.1016/j.rboe.2017.07.011DOI Listing

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