The aim of the study was to develop a hip joint FEM model considering computed dynamic 3D loads during the gait, for the calculation of the stress map on the acetabular cup. The proposed model consists of a FEM of the hard (metal head) on soft (UHMWPE cup) hip bio-bearing in which the 3D loads acting on the joint were calculated by using an inverse dy- namic lower limb musculoskeletal model. The model shows a good numerical stability and with moderate calculation time allows to obtain the stress distribution on the cup in agree- ment in terms of stress values with available data in literature, encouraging the authors to- wards the development of a comprehensive model to calculate the implant wear.
FEM analysis of metal on UHMWPE total hip prosthesis during normal walking cycle
RUGGIERO, Alessandro;MEROLA, MASSIMILIANO;DE SIMONE, MARCO CLAUDIO
2017-01-01
Abstract
The aim of the study was to develop a hip joint FEM model considering computed dynamic 3D loads during the gait, for the calculation of the stress map on the acetabular cup. The proposed model consists of a FEM of the hard (metal head) on soft (UHMWPE cup) hip bio-bearing in which the 3D loads acting on the joint were calculated by using an inverse dy- namic lower limb musculoskeletal model. The model shows a good numerical stability and with moderate calculation time allows to obtain the stress distribution on the cup in agree- ment in terms of stress values with available data in literature, encouraging the authors to- wards the development of a comprehensive model to calculate the implant wear.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
