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Vitamin E\u2013blended highly cross-linked polyethylene (VEPE) has been introduced to improve oxidative stability and long-term wear performance; however, long-term clinical data remain limited.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This retrospective study evaluates long-term polyethylene wear and component positioning in a cohort of patients who underwent primary THA using a vitamin E\u2013blended polyethylene monoblock acetabular component (RM Pressfit vitamys\u00ae). Patients were followed for a minimum of ten years. Radiographic assessment was performed using a fully automated, observer-independent CAD-based software (RayMatch\u00ae), enabling measurement of cup inclination, anteversion, and polyethylene wear through 2D\u20133D registration of implant CAD models.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 57 hips with complete radiographic follow-up were analyzed. Mean polyethylene wear rates were 26.9\u00a0\u00b5m\/year at five years and 18.2\u00a0\u00b5m\/year at ten years, remaining well below commonly reported thresholds associated with osteolysis. Cup inclination remained stable over time, whereas a gradual increase in measured anteversion was observed during follow-up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>At a minimum ten\u00a0year follow-up, the investigated vitamin E\u2013blended polyethylene monoblock cup demonstrated favorable long-term wear characteristics and stable component positioning. Further comparative studies are warranted to compare its long-term performance with other acetabular cup and liner designs.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00264-026-06997-8","type":"journal-article","created":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T23:27:22Z","timestamp":1788478042000},"page":"2611-2619","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Long-term results of a vitamin E\u2013blended polyethylene liner in total hip arthroplasty: a minimum ten\u00a0year computer aided design\u00a0based evaluation of wear and component positioning"],"prefix":"10.1007","volume":"50","author":[{"given":"Eren","family":"Demir","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahfuz","family":"Rasuli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Nienhaus","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Schippers","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Naisan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yazan","family":"Noufal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Drees","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yama","family":"Afghanyar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,9,4]]},"reference":[{"issue":"9597","key":"6997_CR1","doi-asserted-by":"publisher","first-page":"1508","DOI":"10.1016\/S0140-6736(07)60457-7","volume":"370","author":"ID Learmonth","year":"2007","unstructured":"Learmonth ID, Young C, Rorabeck C (2007) The operation of the century: total hip replacement. 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Written and verbal informed consent was obtained from all participants. Ethical approval was granted by the Ethics Commission of the State Medical Association of Hessen, Frankfurt, Germany (approval number: FF 154\/2017). The study was registered as an observational trial on clinicaltrials.gov (NCT04322916).","order":1,"name":"Ethics","label":"Ethics approval and consent to participate","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare no competing interests.","order":2,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Declarations"}}]}}