The posterior malleolus of the ankle is the object
of increasing attention, with considerable enthusiasm for CT scanning
and surgical fixation, as expressed in a recent annotation in The Bone
& Joint Journal. Undoubtedly, fractures with a large
posterior malleolar fragment that allow posterior talar subluxation
from the mortise are served better by fixation. However, in all
other situations, the existing literature does not support this
widespread change in practice. The available biomechanical evidence
shows that the posterior malleolus has little part to play in the
stability or contact stresses of the ankle joint. Radiographic studies
have not shown that CT scanning offers helpful information on pathoanatomical
classification, case selection, or prognosis, or that scanning improves
the likelihood of an adequate surgical reduction. Clinical studies
have not shown any improvement in patient outcome after surgical
fixation, and have confirmed that the inevitable consequence of
increased intervention is an increased rate of complications. A
careful and thoughtful evaluation of indications, risks, and benefits
of this fashionable concept is required to ensure that we are deploying
valuable resources with efficacy, and that we do no harm.
Cite this article: Bone Joint J 2018;100-B:566–9.
