Summary
A six-year-old, female, spayed Labrador Retriever was evaluated for progressive lameness
of one year duration, ending in non-weight-bearing of the right hindlimb. The dog
had a history of severe coxarthrosis of both hip joints, and had a HELICA hip pros-thesis
implanted in the right hip 18 months before. On survey radiographs, the acetabular
and femoral components appeared unstable, with a large void in the proximal femur
and a lacy periosteal reaction on the trochanter. Arthrocentesis was performed to
rule out septic loosening. As culture samples were negative, the dog underwent surgery.
We report the successful revision of an unstable HELICA screw hip prosthesis with
a Zurich cementless total hip replacement. The patient had a good clinical and radiological
outcome seven months postoperatively.
Keywords
HELICA endoprosthesis - Zurich cementless THR - total hip replacement - aseptic loosening