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Relevance of the popliteal angle to hamstring length in cerebral palsy crouch gait

Thompson, NS, Baker, RJ, Cosgrove, AP, Saunders, JL and Taylor, TC 2001, 'Relevance of the popliteal angle to hamstring length in cerebral palsy crouch gait' , Journal of Pediatric Orthopaedics, 21 (3) , pp. 383-387.

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Abstract

The popliteal angle is a widely used clinical means of assessing hamstring length in cerebral palsy patients. The relevance of the popliteal angle as a measure of hamstring length was assessed in this prospective study. Sixteen patients with cerebral palsy with crouch gait had their conventional and modified popliteal angles measured by nine observers on two separate occasions. With use of the conventional and modified forms of the test, 74 and 70%, respectively, of the observed variability was inter-and intraobserver related. The range of SDs for each observer using the conventional test was 7.1–13.6° (average 10.9°), and with use of the modified form of the test, the range was 6.3–4.2° (average 10.5°). The maximum hamstring length of each subject during gait was determined by three-dimensional modelling of their lower limbs. The modified popliteal angle measurements of the most repeatable observer demonstrated an inverse relationship between modified popliteal angle and maximum hamstring length (p < 0.01) and muscle excursion (p < 0.01). Only 10 of 32 limbs had short medial hamstrings.

Item Type: Article
Themes: Health and Wellbeing
Schools: Colleges and Schools > College of Health & Social Care
Colleges and Schools > College of Health & Social Care > School of Health Sciences
Journal or Publication Title: Journal of Pediatric Orthopaedics
Publisher: Lippincott, Williams & Wilkins
Refereed: Yes
ISSN: 0271-6798
Depositing User: RH Shuttleworth
Date Deposited: 07 Jul 2011 10:36
Last Modified: 20 Aug 2013 17:59
URI: http://usir.salford.ac.uk/id/eprint/16582

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