Faculty Collaboration Database

Kinematic and kinetic evaluation of the ankle joint before and after tendo achilles lengthening in patients with spastic diplegia. J Pediatr Orthop 2005;25(4):479-83

Date

06/17/2005

Pubmed ID

15958899

DOI

10.1097/01.bpo.0000161094.08221.ac

Scopus ID

2-s2.0-21244438782 (requires institutional sign-in at Scopus site)   24 Citations

Abstract

Fourteen patients, at a mean age of 9.1 years (range 4.1-16.6 years), who had spastic diplegic cerebral palsy were evaluated before and after tendo Achilles lengthening (TAL). Follow-up (by gait analysis) after TAL ranged from 8 to 30 months. A Vicon motion analysis system with six CCD cameras and two AMTI force plates provided three-dimensional measurements of joint motion and moments. The TAL procedure resulted in normal passive dorsiflexion of the ankle joint with the knee at 0 degrees of extension and 90 degrees of flexion, reduced plantarflexion during swing phase, and reduced premature plantarflexor moment. However, 10 degrees greater than normal dorsiflexion of the ankle joint during mid-stance phase was indicative of a mild calcaneal gait pattern. The TAL procedure improved lower extremity function as documented by both kinematic and kinetic analysis in cerebral palsy.

Author List

Lyon R, Liu X, Schwab J, Harris G

Authors

Gerald Harris PhD Director in the Orthopaedic Research Engineering Center (OREC) department at Marquette University
Xue-Cheng Liu PhD Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
Roger M. Lyon MD Adjunct Professor in the Orthopaedic Surgery department at Medical College of Wisconsin

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

Achilles Tendon
Adolescent
Ankle Joint
Cerebral Palsy
Child
Child, Preschool
Female
Follow-Up Studies
Gait
Gait Disorders, Neurologic
Humans
Kinesics
Male
Orthopedic Procedures
Range of Motion, Articular
Tendons