Scorpio single radius total knee arthroplasty. A minimal five-year follow-up multicentric study

Abstract

Purpose Our goal was to evaluate the five-year follow-up results of the Scorpio single radius total knee arthroplasty. Method We performed a retrospective study based upon a multicentre database to evaluate the minimum five-year follow-up clinical and radiological results of 747 patients (831 knees) who underwent primary Scorpio single radius total knee arthroplasty. Results The mean age of the patients was 71.9 years. At a minimal five-year follow-up, 141 patients were lost to follow-up, 83 patients had died, eight patients had undergone revision of a component, and the remaining 589 patients (602 knees) had a complete clinical and radiological evaluation after a median of six years (range, 5-8). The mean clinical component of the knee score was 92.2 points, and the mean functional component of the knee score was 76.9 points. At last follow-up, 530 of the 602 knees were rated as excellent or good. Only four knees developed patellar complications requiring revision. The survival rate at six years was 95.2%±1.9% and 98.3%±0.6 with revision for any reason and revision for mechanical failure as the end point, respectively. Conclusion This medium-term study indicates favourable clinical and radiological results for this single flexionextension radius design arthroplasty, with a low complication rate on the patellar side.

Outcomes of the Different Types of Total Knee Arthroplasty with the Identical Femoral Geometry

“…Abbas and Gunn28) reported a 99.3% survival rate on 173 primary PS TKA at 8 years. Similarly, Borrione et al29) reported a 95.2% survival rate at 6 years in the multicenter study. In contrast to Rand et al30), who reported a significantly lower survival rate for PS designs compared to CR designs, the survival curve of the CR group in the current study was similar to those of the other groups.…”

No differences in functional results and quality of life after single-radius or multiradius TKA

“…Excellent outcomes have been reported after SR TKA in terms of KSS scores [5,12,20,27], improvements in quality of life [20] and patients' satisfaction [27]. Gómez-Barrena et al…”

Isolated Tibial Component Failure in Total Knee Arthroplasty: A Case Series Evaluating Inflammatory Response versus Mechanical Failure

“…Previous publications have observed isolated failures of the Scorpio tibial component. 6,7,10,11,13 Based on their findings, it appeared that the majority of failures occurred at the cement-bone interface. Martin et al speculated that the large Deltafit Keel, a unique design feature of the Scorpio system, may be a possible cause for the anecdotal reports of tibial component failure.…”

“…The Scorpio Knee was quite successful and had clinically satisfactory outcomes compared with other knee systems on the market. [6][7][8][9][10][11][12][13][14] Despite its popularity and generally excellent outcomes, there were a few reports of early tibial failures due to aseptic loosening (AL). 11,13 AL has been described as a slowly advancing process in which biomaterial wear debris creates an inflammatory response, albeit low grade.…”