Mallet thumb is the avulsion of
the extensor pollicis longus tendon from the base of the distal phalanx with or
without bony fragment. It occurs because of the hyperflexion or axial loading
of the interphalangeal joint, most often due to bicycle injuries and ball
games. Injuries of the abruption extensor tendon in adolescents are extremely
rare.
During the last 30 years 2 cases
have been published in English.Treatment options for mallet
thumb fracture are primary conservative such as splint or cast. Splints or
casts immobilize musculoskeletal injuries while alleviating pain and promoting
healing.
However, these interventions
differ in their technique, indications, benefits, and risks.Operative treatment
is indicated in case of fractures involving more than one third of the
articular surface and/or volar subluxation of the interphalangeal joint as well
as open fractures and when conservative treatment is not successful.
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