... 8:4http://www.jneuroengrehab.com/content/8/1/4Page 3 of 7 for clinical use. This study examined the validity of kinema tic and kinetic variables measuring the hip flexorfunction and the 3D modeled psoa s length by 1) discri-minating the pathologic ... tilt were the key kinematic variables. T he kinetic data includingtime of crossover in the hip flexion-extension momentand the power burst of hip flexor in the late stance wereobtained. The hip ... gaitparameters of the patients, includin g gender, age,GMFCS level, cadence, step length, and walking speed,were collected. Informed consent for the retrospective review of the gait analy sis data of patients...