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Ten-year clinical and radiological outcomes with a vitamin E-infused highly cross-linked polyethylene acetabular cup
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AimsLimited implant survival due to aseptic cup loosening is most commonly responsible for revision total hip arthroplasty (THA). Advances in implant designs and materials have been crucial in addressing those challenges. Vitamin E-infused highly cross-linked polyethylene (VEPE) promises strong wear resistance, high oxidative stability, and superior mechanical strength. Although VEPE monoblock cups have shown good mid-term performance and excellent wear patterns, long-term results remain unclear. This study evaluated migration and wear patterns and clinical and radiological outcomes at a minimum of ten years’ follow-up.MethodsThis prospective observational study investigated 101 cases of primary THA over a mean duration of 129 months (120 to 149). At last follow-up, 57 cases with complete clinical and radiological outcomes were evaluated. In all cases, the acetabular component comprised an uncemented titanium particle-coated VEPE monoblock cup. Patients were assessed clinically and radiologically using the Harris Hip Score, visual analogue scale (pain and satisfaction), and an anteroposterior radiograph. Cup migration and polyethylene wear were measured using Einzel-Bild-Röntgen-Analyze software. All complications and associated treatments were documented until final follow-up.ResultsClinical assessment showed persistent major improvement in all scores. On radiological assessment, only one case showed a lucent line (without symptoms). At last follow-up, wear and migration were below the critical thresholds. No cup-related revisions were needed, indicating an outstanding survival rate of 100%.ConclusionIsoelastic VEPE cups offer high success rates and may prevent osteolysis, aseptic loosening, and the need for revision surgeries in the long term. However, longer follow-up is needed to validate our findings and confirm the advantages offered by this cup.Cite this article: Bone Jt Open 2024;5(10):825–831.
British Editorial Society of Bone & Joint Surgery
Title: Ten-year clinical and radiological outcomes with a vitamin E-infused highly cross-linked polyethylene acetabular cup
Description:
AimsLimited implant survival due to aseptic cup loosening is most commonly responsible for revision total hip arthroplasty (THA).
Advances in implant designs and materials have been crucial in addressing those challenges.
Vitamin E-infused highly cross-linked polyethylene (VEPE) promises strong wear resistance, high oxidative stability, and superior mechanical strength.
Although VEPE monoblock cups have shown good mid-term performance and excellent wear patterns, long-term results remain unclear.
This study evaluated migration and wear patterns and clinical and radiological outcomes at a minimum of ten years’ follow-up.
MethodsThis prospective observational study investigated 101 cases of primary THA over a mean duration of 129 months (120 to 149).
At last follow-up, 57 cases with complete clinical and radiological outcomes were evaluated.
In all cases, the acetabular component comprised an uncemented titanium particle-coated VEPE monoblock cup.
Patients were assessed clinically and radiologically using the Harris Hip Score, visual analogue scale (pain and satisfaction), and an anteroposterior radiograph.
Cup migration and polyethylene wear were measured using Einzel-Bild-Röntgen-Analyze software.
All complications and associated treatments were documented until final follow-up.
ResultsClinical assessment showed persistent major improvement in all scores.
On radiological assessment, only one case showed a lucent line (without symptoms).
At last follow-up, wear and migration were below the critical thresholds.
No cup-related revisions were needed, indicating an outstanding survival rate of 100%.
ConclusionIsoelastic VEPE cups offer high success rates and may prevent osteolysis, aseptic loosening, and the need for revision surgeries in the long term.
However, longer follow-up is needed to validate our findings and confirm the advantages offered by this cup.
Cite this article: Bone Jt Open 2024;5(10):825–831.
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