Pre-operative gastrocnemius lengths in gait predict outcomes following gastrocnemius lengthening surgery in children with cerebral palsy
Fig 5
Cross-classified short-term improvements following gastrocnemius lengthening surgery.
Limbs were cross-classified based on those that underwent a gastrocnemius lengthening surgery (case and overtreated) and those labeled as having a short pre-surgery gastrocnemius (case and control). (A) Good outcome rates, defined as the fraction of limbs that had at least a 5-point improvement in ADI, or an improvement in ADI with post-surgery ADI > 90, were computed per group. The current good outcome rate was computed from retrospective data from all limbs that underwent gastrocnemius lengthening surgery. Changes in the (B) ADI, (C) mean stance ankle dorsiflexion angle, and (D) mean stance knee flexion angle were computed from the pre-surgery to post-surgery clinical gait visit. Kinematic improvements in the case limbs exceeded those of the overtreated and control limbs. Limbs, on average, did not tend to devolve into a crouch gait, even within the overtreated limbs. In all panels, error bars represent ± 1 standard error of the mean.