McFarland fractures of the medial malleolus in
children, also classified as Salter–Harris Type III and IV fractures,
are associated with a high incidence of premature growth plate arrest.
In order to identify prognostic factors for the development of complications
we reviewed 20 children with a McFarland fracture that was treated
surgically, at a mean follow-up of 8.9 years (3.5 to 17.4). Seven
children (35%) developed premature growth arrest with angular deformity.
The mean American Orthopaedic Foot and Ankle Society Ankle-Hindfoot
Scale for all patients was 98.3 (87 to 100) and the mean modified
Weber protocol was 1.15 (0 to 5). There was a significant correlation
between initial displacement (p = 0.004) and operative delay (p
= 0.007) with premature growth arrest. Both risk factors act independently
and additively, such that all children with both risk factors developed
premature arrest whereas children with no risk factor did not. We
recommend that fractures of the medial malleolus in children should
be treated by anatomical reduction and screw fixation within one
day of injury. Cite this article:
