9Rethlefsen S, Kay R, Dennis S, et al. The effects of fixed and articulated ankle-foot orthoses on gait patterns in subjects with cerebral palsy[J]. J Pediatr Orthop, 1999,19(4):470-474.
10Wilson H, Haideri N, Song K, et al. Ankle-foot orthoses for preambulatory children with spastic diplegia. J Pediatr Orthop [J]. 1997,17(3):370-376.