Summary
Cementless total hip implants are relatively new to the veterinary market and therefore
complication rates and prognostic indicators associated with the procedure have not
been thoroughly documented. The objective of this study was to determine the prevalence
of complications and identify prognostic indicators of success or failure for the
Zurich cementless total hip replacement (THR). Medical records of 163 dogs that underwent
Zurich cementless-THR were reviewed continuous and categorical variables, clinical
outcomes and complications were recorded. Complications were separated into intra-operative
(IOC), short-term (STC), and long-term (LTC). Bivariate and multivariate statistical
analysis was used to compare complications. The clini-cal significance of this study
was to provide surgeons with prognostic indicators of success or failure when evaluating
prospective Zurich cementless-THR patients, and to report the complication rate of
Zurich cementlessTHR. The complication rates of Zurich cementless-THR were then compared
to previously-reported complication rates of cemented-THR and other cementless-THR
systems. Short-term complications, LTC, and IOC rates of Zurich cementless-THR were
found to be 6.75%, 10.4%, and 11.0% respectively. The most common complications were
intra-operative femoral fracture, luxation of the implant, and septic loosening of
the implant. Increased body weight and prior cemented-THR or fe-moral head and neck
ostectomy of the contra-lateral hip were identified as negative prognostic indicators.
The overall complication rate identified was greater than those previously reported
for other cementless- and cemented-THR systems.
Keywords
Cementless - total hip replacement - complications