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Principles of joint-bridging triangular external fixation

A joint-bridging triangular external fixator consists of a Steinmann pin running through the calcaneal tuberosity. A rod is fixed to each end of the pin and connected to the partial frame on the tibial crest.

This triangular frame is extended into the foot to stabilize soft tissues, to fix the foot in a neutral position and to reduce the risk of secondary equinus deformity.

A joint-bridging frame is usually used for temporary stabilization, but may be used for definitive treatment if necessary.

Details of external fixation are described in the basic technique for application of modular external fixator.

Specific considerations for joint-bridging triangular fixation of the ankle joint are given below.