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Long term survivorship following Scorpio Total Knee Replacement
1Trauma and Orthopaedic Department, Royal Derby Hospital, Derby, United Kingdom.
The Knee
|March 31, 2015
Summary
The Scorpio Total Knee Replacement (TKR) shows excellent long-term survival rates, with a 97.4% success rate at 14 years. This study found no increased revision rate, indicating good functional outcomes for this common knee prosthesis.
Area of Science:
- Orthopedic surgery
- Biomaterials science
- Medical device evaluation
Background:
- The Scorpio Total Knee Replacement (TKR) is widely used in the UK.
- Concerns about a high revision rate for the Scorpio TKR prompted this investigation.
- No prior studies have assessed the 10-year survivorship of the Scorpio TKR prosthesis.
Purpose of the Study:
- To evaluate the long-term survivorship of the Scorpio TKR prosthesis.
- To assess clinical and radiological outcomes of Scorpio TKR.
- To compare patient-reported outcomes with radiographic findings.
Main Methods:
- A cohort of 456 patients undergoing primary Scorpio TKR was clinically and radiologically assessed.
- Patient-reported outcomes (WOMAC, Oxford Knee Score) and complications were recorded.
- Survival analysis utilized Kaplan-Meier curves with revision as the endpoint; radiographic evaluation used the Knee Society Roentgenographic Evaluation and Scoring System.
Main Results:
- At a mean follow-up of 12.5 years, 196 patients were available for review.
- Seven patients (3.6%) required revision surgery, primarily due to aseptic or septic loosening.
- Cumulative prosthesis survival was 99.5% at 5 years and 97.4% at 14 years.
Conclusions:
- The Scorpio TKR demonstrates good long-term survivorship.
- Functional outcomes, assessed by OKS and WOMAC scores, were favorable.
- This study did not find an increased revision rate for the Scorpio TKR prosthesis.
