CMF Bone Stimulation as Adjunct to Surgical Treatment of Ankle Fractures

Inclusion Criteria: * Subject is diagnosed with an unstable, closed, isolated fracture of the ankle and underwent operative stabilization with plate(s) and/or screws (Weber Ankle Fracture Classification B and C) Exclusion Criteria: * Subject has an open fracture * Subject has any additional fractures of another bone besides the ankle fracture that is to be treated in the study including the contralateral ankle * Surgical stabilization was definitively performed with an external fixation system * Surgical stabilization was performed in such a manner that it will result in a fusion of the ankle joint * Malreduced Ankle as described by Phillips, et al 1985 JBJS * Surgical procedure included the use of osteoinductive materials in addition to rigid fixation * BMI ≥ 40 kg/m2