{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T23:03:58Z","timestamp":1777676638646,"version":"3.51.4"},"reference-count":38,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2009,10,1]],"date-time":"2009-10-01T00:00:00Z","timestamp":1254355200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["HIP International"],"published-print":{"date-parts":[[2009,10]]},"abstract":"<jats:p>We examined the hypothesis that the circumferential osseous apposition around HA-coated implants forms a protective barrier against articular wear debris. Sixty-five hydroxyapatite-coated total hip arthroplasties in 57 patients (age &lt;50years) with polyethylene-metal articulation were evaluated regarding PE-wear, osteolysis, and clinical outcome at a minimum of 10 years follow-up.<\/jats:p>\n                  <jats:p>There was no correlation between PE-wear and osteolysis of the femoral zones or cup zones I and III. A strong Pearson correlation was found between polyethylene wear and osteolysis around cup zone II, where the cup only consisted of polyethylene (p&lt;0,01). The aseptic failure rate was 1.5% for the femoral component and 4.5% for the cup after 10 years of follow\u2013up. The average Harris Hip Score was 90 and the average Engh score for fixation was 23 after 10 years. Around HA-coated parts of the prosthesis bone formation remained stable, regardless of the degree of polyethylene wear. The average linear polyethylene wear was 0,16 mm\/year.<\/jats:p>\n                  <jats:p>The circumferential osseous apposition of the HA-coated implants possibly formed a protective barrier against articular wear debris. The use of cups with a backside gap resulted in PE-wear associated osteolysis in cup zone II and may be considered to be best avoided.<\/jats:p>","DOI":"10.1177\/112070000901900408","type":"journal-article","created":{"date-parts":[[2018,1,26]],"date-time":"2018-01-26T11:55:29Z","timestamp":1516967729000},"page":"343-351","source":"Crossref","is-referenced-by-count":7,"title":["Results of Total Hip Arthroplasties in the Young Patient; Further Evidence for a Barrier Against Articular wear Debris by Hydroxyapatite Coatings"],"prefix":"10.1177","volume":"19","author":[{"given":"Pieter J.","family":"Emans","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Maastricht University Medical Centre, Maastricht - The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rene H.M.","family":"Ten Broeke","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Maastricht University Medical Centre, Maastricht - The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeroen M.J.","family":"Van Mulken","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Maastricht University Medical Centre, Maastricht - The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roel","family":"Kuijer","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, University Medical Centre Groningen, University of Groningen - The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lodewijk W.","family":"Van Rhijn","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Maastricht University Medical Centre, Maastricht - The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rudolph G.T.","family":"Geesink","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Maastricht University Medical Centre, Maastricht - The 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