RADIOGRAPHIC ASSESSMENT OF A CANINE UNCEMENTED POROUS-COATED ANATOMICTOTAL HIP-PROSTHESIS

Thirty uncemented porous-coated anatomic total hip prostheses in 24 do gs were evaluated radiographically at 6 months, 12 months, or 18 month s after arthroplasty. All dogs were fully weight bearing and free of l ameness at the time of follow-up. Radiographs were assessed for prosth etic component alignment, percentage of femoral canal fill, resorptive and formative bony changes, and changes at the implant bone interface . No evidence of infection, loosening, or failure of component fixatio n was seen. Settling of the acetabular component and subsidence of the femoral stem was seen early after surgery. Cortical atrophy was seen in all femurs and was the most significant bony remodeling change. Ear ly results of clinical and radiographic evaluation of uncemented total hip arthroplasty in dogs have been encouraging.