2Loudon J K, Goist H L, Loudon K L. Genu Recurvatum Syndrome [J]. J Orthop Sports Phys Ther(S0190-6011 ), 1998, 27:361-367.
3Chen C L, Chen H C, Tang S F, et al. Gait performance with compensatory adaptations in stroke patienta with different degrees of motor recovery[J]. Am Jphys Med Rehabil, 2003, 82 ( 12):925 -935.
7Engrdt M. Dynamic muscle strength training in stroke patients : effects on knee extension torque, electromyographic activity, and motor function[J]. Arch Phys Med Rehabil, 1995, 76: 419.