Strain adaptation in canine total hip replacement: a cemented versus porous ingrowth comparison

Bone remodeling has been shown to correlate with alterations in strain patterns under functional loadings. The long-term performance of a joint replacement prosthesis is then dependent upon achieving an appropriate strain distribution to ensure a homeostatic condition in the supporting bone. Previous studies with both cemented and cementless femoral hip components have shown that strain is substantially altered with prosthetic implantation. This study compares femoral strain adaptation 4 months after total hip arthroplasty in dogs receiving either a cemented or a porous ingrowth femoral component.