Extract - Correction of spastic equinus deformity is a common surgical procedure in cerebral palsy. Several surgical procedures are currently utilized for effectively lengthening the Achilles tendon or gastrocnemius muscle. Past studies have examined the effectiveness of these surgical procedures by preoperative and postoperative assessment of traditional range of motion and muscle tests and observation of gait. Recent advances in gait analysis technology now permit more objective preop and postop assessment of a multitude of gait characteristics, including joint motions, ground reaction forces, linear measurements, EMG firing patterns, and other parameters. The purpose of this study was to evaluate the effects of different methods of Tendo-Achilles Lengthenings done at the Shriners Hospitals for Crippled Children in Houston, Texas by comparison of preop and postop gait analysis measurements.