Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Forces and moments on the knee during kneeling and squatting.

Authors
Pollard-JP; Porter-WL; Redfern-MS
Source
J Appl Biomech 2011 Aug; 27(3):233-241
NIOSHTIC No.
20039466
Abstract
Euler angle decomposition and inverse dynamics were used to determine the knee angles and net forces and moments applied to the tibia during kneeling and squatting with and without kneepads for 10 subjects in four postures: squatting (Squat), kneeling on the right knee (One Knee), bilateral kneeling near full flexion (Near Full) and bilateral kneeling near 90 flexion (Near 90). Kneepads affected the knee flexion (p = .002), medial forces (p = .035), and internal rotation moments (p = .006). Squat created loading conditions that had higher varus (p < .001) and resultant moments (p = .027) than kneeling. One Knee resulted in the highest force magnitudes and net moments (p < .001) of the kneeling postures. Thigh-calf and heel-gluteus contact forces decreased the flexion moment on average by 48% during Squat and Near Full.
Keywords
Musculoskeletal-system; Musculoskeletal-system-disorders; Skeletal-system; Skeletal-stress; Skeletal-movement; Skeletal-disorders; Knee-disorders; Knee-protection; Knee-injuries; Psychological-effects; Psychological-factors; Author Keywords: restricted workspace; high flexion; thigh-calf contact; heel-gluteus contact
CODEN
JABOEG
Publication Date
20110801
Document Type
Journal Article
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Issue of Publication
3
ISSN
1065-8483
NIOSH Division
OMSHR
Source Name
Journal of Applied Biomechanics
State
PA
TOP