{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,25]],"date-time":"2026-01-25T16:58:45Z","timestamp":1769360325052,"version":"3.49.0"},"reference-count":45,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2013,4,21]],"date-time":"2013-04-21T00:00:00Z","timestamp":1366502400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2013,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The aim of this study was to analyse the osseous reaction after arthroscopic double\u2010row rotator cuff repair using bio\u2010absorbable poly\u2010<jats:sc>l<\/jats:sc>\u2010lactic acid (PLLA) and non\u2010absorbable polyetheretherketone (PEEK) suture anchors. Focus of interest was the appearance of peri\u2010implant fluid and anchor tunnel widening.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Thirty\u2010six patients were evaluated at final follow\u2010up (16\u00a0PLLA and 20\u00a0PEEK). Clinical results were acquired by use of the subjective shoulder value, the Constant score and the Western Ontario Rotator Cuff Index. Radiological results were analysed by supraspinatus tendon integrity, footprint coverage, muscular atrophy and fatty infiltration. Furthermore, anchor tunnel expansion was measured, anchor structure and peri\u2010implant fluids graduated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>At 28.4 \u00b1 8.9\u2010month follow\u2010up, clinical outcome was similar (n.s.). MRI investigation revealed osseous reaction in both groups; tunnel widening was 0.9 \u00b1 0.7\u00a0mm in PLLA and 0.8 \u00b1 0.6\u00a0mm in PEEK anchors (n.s.). Peri\u2010implant fluid was pronounced in PLLA anchors (<jats:italic>p<\/jats:italic> &lt; 0.05). Tunnel widening was significantly higher in lateral anchors irrespectively of the material used. Tendon integrity, muscular atrophy, fatty infiltration and footprint coverage were not significantly different (n.s.).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Both materials lead to osseous reaction in this study, whereas consequences of pronounced fluid in PLLA patients remain unclear. Pronounced tunnel widening in lateral anchors leads to the assumption that other causes such as mechanical stress potentially have to be considered when analysing osseous reaction.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-013-2510-3","type":"journal-article","created":{"date-parts":[[2013,4,20]],"date-time":"2013-04-20T01:48:02Z","timestamp":1366422482000},"page":"1647-1654","source":"Crossref","is-referenced-by-count":45,"title":["Arthroscopic double\u2010row repair of the rotator cuff: a comparison of bio\u2010absorbable and non\u2010resorbable anchors regarding osseous reaction"],"prefix":"10.1002","volume":"21","author":[{"given":"Hendrik","family":"Haneveld","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Center for Musculoskeletal Surgery, Campus Virchow Charit\u00e9\u2010Universitaetsmedizin Berlin Augustenburger Platz 1 13353 Berlin 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