Imperial College London


Faculty of EngineeringDepartment of Mechanical Engineering




+44 (0)20 7594 7062a.amis




Ms Fabienne Laperche +44 (0)20 7594 7033




713City and Guilds BuildingSouth Kensington Campus






BibTex format

author = {Ellis, MI and Seedhom, BB and Amis, AA},
doi = {10.1243/EMED_JOUR_1979_008_009_02},
journal = {Engineering in Medicine},
pages = {33--40},
title = {Forces in the knee joint whilst rising from normal and motorized chairs},
url = {},
volume = {8},
year = {1979}

RIS format (EndNote, RefMan)

AB - Knee joint forces were determined by kinesiological techniques using a high speed camera and force platforms so that a comparison could be made for rising from a normal chair without the aid of arms and with the aid of a motorized chair. For rising from a normal chair, the knee joint forces parallel to the long axis of the tibia at the point of contact between the tibia and femur, were found to be up to seven times body weight at about the time when the body left contact with the chair. Using a motorized chair the knee joint forces were reduced to less than body weight until normal standing was achieved.
AU - Ellis,MI
AU - Seedhom,BB
AU - Amis,AA
DO - 10.1243/EMED_JOUR_1979_008_009_02
EP - 40
PY - 1979///
SN - 0046-2039
SP - 33
TI - Forces in the knee joint whilst rising from normal and motorized chairs
T2 - Engineering in Medicine
UR -
VL - 8
ER -