Medium-term results of the Scorpio Total Knee Replacement

We performed a medium-term clinical and radiological analysis of 160 patients (173 knees) who underwent Scorpio total knee arthroplasty between August 1997 and September 2000. Seventeen patients (19 knees) were lost to follow-up and 29 patients (29 knees) died before completing a minimum 5 year follow-up. The mean age of the patients at the time of the operation was 73.5 years and the mean duration of follow-up was 5 years and ten months. At the time of latest follow-up, the mean knee score was 92 and the mean functional score was 65. Overall, 104 knees were rated as excellent, 12 knees as good, 8 knees as fair, and one knee as poor. Thin, incomplete, non-progressive radiolucent lines were noted around eight tibial components and one femoral component. Massive osteolysis in the tibia was observed in one case. Only one patient needed revision of the prosthesis. Our findings suggest that the prosthesis design with a single flexion extension radius is associated with a good medium-term outcome.