Details

Autor(en) / Beteiligte

• Mootanah, R.
• Imhauser, C.W.
• Reisse, F.
• Carpanen, D.
• Walker, R.W.
• Koff, M.F.
• Lenhoff, M.W.
• Rozbruch, S.R.
• Fragomen, A.T.
• Dewan, Z.
• Kirane, Y.M.
• Cheah, K.
• Dowell, J.K.
• Hillstrom, H.J.

Titel

Development and validation of a computational model of the knee joint for the evaluation of surgical treatments for osteoarthritis

Ist Teil von

• Computer methods in biomechanics and biomedical engineering, 2014-01, Vol.17 (13), p.1502-1517

Ort / Verlag

England: Taylor & Francis

Erscheinungsjahr

2014

Quelle

MEDLINE

Beschreibungen/Notizen

• A three-dimensional (3D) knee joint computational model was developed and validated to predict knee joint contact forces and pressures for different degrees of malalignment. A 3D computational knee model was created from high-resolution radiological images to emulate passive sagittal rotation (full-extension to 65°-flexion) and weight acceptance. A cadaveric knee mounted on a six-degree-of-freedom robot was subjected to matching boundary and loading conditions. A ligament-tuning process minimised kinematic differences between the robotically loaded cadaver specimen and the finite element (FE) model. The model was validated by measured intra-articular force and pressure measurements. Percent full scale error between FE-predicted and in vitro-measured values in the medial and lateral compartments were 6.67% and 5.94%, respectively, for normalised peak pressure values, and 7.56% and 4.48%, respectively, for normalised force values. The knee model can accurately predict normalised intra-articular pressure and forces for different loading conditions and could be further developed for subject-specific surgical planning.