Introduction:

Due to absence of fusion in guided-growth devices for EOS (growing rods, Shilla, LSZ) movement of the rods against their attachment is possible resulting in wear debris formation. It is important to understand the wear resistance of materials used in these devices under appropriate conditions.

Purpose of study: The UMEX frame was developed from the Joshi external fixator, being first used in the UK in 2004. It corrects deformity by gradual distraction and manipulation. We report the outcomes of a two centre combined experience of the UMEX frame for the treatment of complex congenital foot deformities.

Method: The frame was used in the management of 27 complex foot disorders, the majority of which were resistant club feet. All patients had at least 18 month follow up.

Results: Good deformity correction was achieved in all cases, with a plantigrade foot immediately post-treatment. However, minor degrees of relapse have been noted when the strict postoperative regimen was not followed.

Conclusions: The application of external fixators for the correction of foot deformities can be a complex procedure for the surgeon, and cumbersome for the patient. This frame is simple to apply and manage and allows multi-planar deformity correction in one stage. Our experience and patient outcome data suggest that this technique is a useful surgical option for the Paediatric Orthopaedic surgeon dealing with a relapsed club foot and other complex foot deformities.