Flexor digitorum profundus fractures are caused by forceful extension of the distal interphalangeal joint when in a flexed position, resulting in an avulsion fracture at the volar base of the distal phalanx, and usually require surgery. Uncomplicated middle and proximal phalanx fractures, typically caused by a direct blow, can be treated with buddy splinting if there is minimal angulation (less than 10 degrees); however, larger angulations, displacement, and malrotation often require reduction or surgery. Dorsal proximal interphalangeal joint dislocations require reduction and buddy splinting in slight flexion with an extension-block splint.
Ryan Gorji MD
Dr Ryan Gorji
Ryan Gorji Chicago
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