Faculty Collaboration Database

Segmental kinematic analysis of planovalgus feet during walking in children with cerebral palsy. Gait Posture 2017 May;54:277-283

Date

04/07/2017

Pubmed ID

28384608

DOI

10.1016/j.gaitpost.2017.03.020

Scopus ID

2-s2.0-85016619212 (requires institutional sign-in at Scopus site)   14 Citations

Abstract

Pes planovalgus (flatfoot) is a common deformity among children with cerebral palsy. The Milwaukee Foot Model (MFM), a multi-segmental kinematic foot model, which uses radiography to align the underlying bony anatomy with reflective surface markers, was used to evaluate 20 pediatric participants (30feet) with planovalgus secondary to cerebral palsy prior to surgery. Three-dimensional kinematics of the tibia, hindfoot, forefoot, and hallux segments are reported and compared to an age-matched control set of typically-developing children. Most results were consistent with known characteristics of the deformity and showed decreased plantar flexion of the forefoot relative to hindfoot, increased forefoot abduction, and decreased ranges of motion during push-off in the planovalgus group. Interestingly, while forefoot characteristics were uniformly distributed in a common direction in the transverse plane, there was marked variability of forefoot and hindfoot coronal plane and hindfoot transverse plane positioning. The key finding of these data was the radiographic indexing of the MFM was able to show flat feet in cerebral palsy do not always demonstrate more hindfoot eversion than the typically-developing hindfoot. The coronal plane kinematics of the hindfoot show cases planovalgus feet with the hindfoot in inversion, eversion, and neutral. Along with other metrics, the MFM can be a valuable tool for monitoring kinematic deformity, facilitating clinical decision making, and providing a quantitative analysis of surgical effects on the planovalgus foot.

Author List

Kruger KM, Konop KA, Krzak JJ, Graf A, Altiok H, Smith PA, Harris GF

Authors

Gerald Harris PhD Director in the Orthopaedic Research Engineering Center (OREC) department at Marquette University
Karen Kruger PhD Research Assistant Professor in the MU-MCW Department of Biomedical Engineering department at Marquette University

MESH terms used to index this publication - Major topics in bold

Adolescent
Biomechanical Phenomena
Cerebral Palsy
Child
Female
Flatfoot
Foot
Gait
Humans
Male
Radiography
Walking