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Principles and indications

Principles

As the ring fixator is an external fixator, it gives relative stability.
As pins are inserted across different planes in a multiplanar fixation, the construct provides great stability.
The stiffness of the construction can vary depending on the configuration of the fixation, the number of rings used, and usage of different types of pins such as K-wires or Schanz screws.
Depending on the assembly, the fracture can be distracted, or compressed, and deformities can be corrected.
A common use for the ring fixator is distraction osteogenesis to correct bone loss, shortening and deformity.