{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T23:56:22Z","timestamp":1781826982435,"version":"3.54.5"},"reference-count":15,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2017,1,20]],"date-time":"2017-01-20T00:00:00Z","timestamp":1484870400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["HIP International"],"published-print":{"date-parts":[[2017,7]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The RM Pressfit vitamys is a titanium particle-coated monoblock cup with vitamin E stabilised highly cross-linked polyethylene. Initial fixation is achieved via press-fit with subsequent stability by bone on-growth. This is the first study to report the 5-year results of this design.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We performed a prospective cohort study according to STROBE guidelines of 100 consecutive total hip replacements (THRs) in 92 patients all with ceramic heads. Demographic data, pre\/postoperative visual analogue scale (VAS) for pain and satisfaction, Harris Hip Scores (HHS) and complications were recorded. Radiographic analysis of osteolysis and loosening was complemented by EBRA (Einzel-Bild-R\u00f6ntgen-Analyse) evaluation of cup movement.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Our cohort comprised 48 women (mean age 67; SD 10.4) and 44 men (mean age 69; SD 7.8). The mean body mass index was 27 kg\/m2 (SD 4.6). Surgical indications were osteoarthritis 96%, avascular necrosis 3% and fracture 1%. 82% had a direct anterior approach, 15% anterolateral and 3% trans-gluteal. 4 surgeons were involved. 1 cup was repositioned and fixed with screws within a week of index surgery. There were 2 intraoperative femoral fractures, 3 haematomata with 1 requiring drainage and 1 deep infection settling with an open washout and modular exchange. Mean VAS satisfaction increased from 3.8 (SD 2.0) to 8.8 at 6 weeks (SD 1.4) and 9.5 (SD 1.3) at 5 years. The HHS functional scores were 58.9 (SD 13.2) preoperatively and 94.6 (SD 6.6) at 5 years. Radiographic analysis showed neither progressive radiolucency nor osteolysis. Mean migration was 1.5 mm after 5 years.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Mid-term results of the RM Pressfit vitamys cup are encouraging.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.5301\/hipint.5000469","type":"journal-article","created":{"date-parts":[[2017,1,20]],"date-time":"2017-01-20T06:15:44Z","timestamp":1484892944000},"page":"368-372","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":19,"title":["The RM Pressfit Vitamys: 5-Year Swiss Experience of the First 100 Cups"],"prefix":"10.1177","volume":"27","author":[{"given":"Michael","family":"Wyatt","sequence":"first","affiliation":[{"name":"Clinic for Orthopaedic and Trauma Surgery, Luzerner Kantonsspital, Luzern - Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan","family":"Weidner","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedic and Trauma Surgery, Luzerner Kantonsspital, Luzern - Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dominik","family":"Pfluger","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedic and Trauma Surgery, Luzerner Kantonsspital, Luzern - Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Beck","sequence":"additional","affiliation":[{"name":"Clinic for Orthopaedic and Trauma Surgery, Luzerner Kantonsspital, Luzern - Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2017,1,20]]},"reference":[{"key":"bibr1-hipint.5000469","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.91B4.21363"},{"key":"bibr2-hipint.5000469","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-015-4556-7"},{"key":"bibr3-hipint.5000469","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.90B10.20274"},{"key":"bibr4-hipint.5000469","doi-asserted-by":"publisher","DOI":"10.1054\/arth.2002.33664"},{"issue":"121","key":"bibr5-hipint.5000469","first-page":"20","author":"DeLee JG","year":"1976","journal-title":"Clin Orthop Relat Res"},{"key":"bibr6-hipint.5000469","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-197355080-00006"},{"key":"bibr7-hipint.5000469","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2012.11.004"},{"issue":"5","key":"bibr8-hipint.5000469","first-page":"636","volume":"10","author":"Ilchmann T","year":"1995","journal-title":"Three retrospective methods compared with Roentgen stereophotogrammetry. 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