SMC is thought to be related to integrity of the corticospinal tract (CST), which is damaged in children with CP [5]. Input from the CST is also thought to have a role in development of neural networks within the spinal cord [6], which may have a role in the automatic control of walking. SCALE correlates with ability to perform uncoupled hip and knee movement during the swing phase of gait [7], and therefore may predict outcomes of hamstring
lengthening surgeries in children with CP [8]. This is supported by Rha and colleagues findings that SCALE correlates with knee flexion at initial contact in patients who walk with significant knee flexion