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J Orthop Res. 2014 Apr;32(4):531-6. doi: 10.1002/jor.22567. Epub 2013 Dec 23.

Foot and ankle joint movements inside orthoses for children with spastic CP.

Author information

1
Center for Motion Analysis at Orthopedic Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, 53201; Department of Orthopaedic Surgery, Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wisconsin, 53201.

Abstract

We compared the ankle joint and foot segment kinematics of pediatric cerebral palsy (CP) participants walking with and without orthoses. A six segment foot model (6SF) was used to track foot motion. Holes were cut in the study orthoses so that electromagnetic markers could be directly placed on the skin. The Hinged Ankle Foot Orthoses (HAFO) allowed a significant increase in ankle dorsiflexion as compared to the barefoot condition during gait, but significantly constrained sagittal forefoot motion and forefoot sagittal range of motion (ROM) (p < 0.01), which may be detrimental. The Solid Ankle Foot Orthoses (SAFO) constrained forefoot ROM as compared to barefoot gait (p < 0.01). The 6SF model did not confirm that the SAFO can control excessive plantarflexion for those with severe plantarflexor spasticity. The supramalleolar orthosis (SMO) significantly (p < 0.01) constrained forefoot ROM as compared to barefoot gait at the beginning and end of the stance phase, which could be detrimental. The SMO had no effects observed in the coronal plane.

KEYWORDS:

cerebral palsy; foot segment model; gait; orthoses

PMID:
24375587
PMCID:
PMC4502580
DOI:
10.1002/jor.22567
[Indexed for MEDLINE]
Free PMC Article
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