Executive Editor: Chris Colton

Authors: Renato Fricker, Matej Kastelec, Fiesky Nuñez, Terry Axelrod

Thumb - Proximal phalanx: Articular (head) - bicondylar

General considerations

Bicondylar fractures of the head of the proximal phalanx may be T-shaped, with a long or a short T.
Another pattern of fracture is a combination of a long oblique fracture separating one condyle, together with a short oblique, or transverse, fracture separating the other condyle (sometimes called “reversed lambda” fractures, because of their resemblance to the Greek letter “λ”).
Lag screw fixation is indicated for all displaced intra-articular fractures, when the skills and resources are available. Condylar fractures tend to be very unstable and should be treated operatively. If nonoperative treatment is attempted, secondary displacement is likely, leading to angulation of the finger.

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v1.0 2008-11-08