A mathematical analysis of the effect of flexion and rotation on apparent varus/valgus alignment at the knee.
The quantitative effect of flexion and rotation on apparent varus/valgus deformity was analyzed, and the expected amount of deformity as a function of flexion rotational artifact determined, as shown by use of formulae and tabulated computational results. These results were calculated first when no deformity was present initially, and also for varying amounts of initial deformity.
Department of Orthopedic Surgery, Johns Hopkins University, School of Medicine, Baltimore, Md.
K A
KA
Krackow
C L
CL
Pepe
E J
EJ
Galloway
D001696:Biomechanical Phenomena; D006801:Humans; D007592:Joint Diseases / Q000503:physiopathology; D007719:Knee Joint / Q000502:physiology* / Q000503:physiopathology; D008433:Mathematics; D009068:Movement; D012399:Rotation