Journal of Bone and Joint Surgery - British Volume · 1997 · 26 citations · 0 references
MedicineOrthopaedic SurgeryOrthopedic SurgeryJoint Replacement SurgeryOrthopedic BiomechanicsOrthopedicsArthroplasty BiomechanicsHip ArthroplastyHip BiomechanicsImplant BiomechanicsJoint BiomechanicsJoint MechanicsAcetabular Component PositioningFemoral AnteversionFemoral Component PositioningHip Joint MechanicsOrthopedic Implant ModelingPhysiologic Joint MotionThree-dimensional Implant PositioningTotal Hip Arthroplasty Biomechanics
A three-dimensional computer model of a total hip replacement was used to examine the relationship between the position of the components, the range of motion and the prosthetic joint contact area. Horizontal acetabular positions with small amounts of acetabular and femoral anteversion provide the largest contact areas, but result in limited joint movement. These data will allow surgeons to select implant positions that will provide the largest possible joint contact area for a given joint range of motion although these are conflicting goals. In some component positions a truncated spherical prosthetic head resulted in smaller contact areas than a completely spherical head.