{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T23:48:29Z","timestamp":1769212109406,"version":"3.49.0"},"reference-count":20,"publisher":"SLACK, Inc.","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Orthopedics"],"published-print":{"date-parts":[[2012,4]]},"abstract":"<jats:p>This article describes a case of late locking mechanism failure and disassociation of a Pinnacle acetabular cup (DePuy, Warsaw, Indiana) and Marathon polyethylene liner (DePuy) 53 months after routine primary total hip arthroplasty in an active patient. Following an uncomplicated initial postoperative recovery, the patient felt a pop while kneeling for gardening activities. The patient had no prodromal symptoms but reported pain with range of motion and weight bearing following the episode. Radiographs appeared to show a fractured liner with intact acetabular and femoral components. Intraoperatively, the liner was disassociated and dislocated inferior to the acetabulum, and 3 consecutive antirotational tines were sheared off the liner at their bases. The acetabular cup and femoral stem were well fixed. Extensive metallosis existed from the femoral head and acetabular shell articulating in the absence of a liner. The patient underwent revision of the acetabular cup, polyethylene liner, and femoral head due to the concern for osteolysis given the extensive metallosis. Revision of the acetabular cup and liner were performed with no further complications. No conclusions could be made as to the exact mechanism of failure following laboratory analysis of the retrieved polyethylene liner. Several possible mechanisms of failure are possible. Although cases of acute disassociation of this system have been reported, this is the first article to our knowledge to report failure at such a late postoperative time.<\/jats:p>","DOI":"10.3928\/01477447-20120327-29","type":"journal-article","created":{"date-parts":[[2012,4,11]],"date-time":"2012-04-11T18:56:18Z","timestamp":1334170578000},"source":"Crossref","is-referenced-by-count":18,"title":["Late Liner Disassociation of a Pinnacle System Acetabular Component"],"prefix":"10.3928","volume":"35","author":[{"given":"Stephanie W.","family":"Mayer","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Samuel S.","family":"Wellman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael P.","family":"Bolognesi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David E.","family":"Attarian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2308","reference":[{"key":"e_1_3_1_2_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-4636(19990915)46:4<573::AID-JBM16>3.0.CO;2-A"},{"key":"e_1_3_1_3_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.G.00043"},{"key":"e_1_3_1_4_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.blo.0000150124.34906.34"},{"issue":"12","key":"e_1_3_1_5_2","first-page":"88","article-title":"Review of the evolution of the cementless acetabular cup","volume":"31","author":"Ries MD","year":"2008","unstructured":"Ries MD. Review of the evolution of the cementless acetabular cup. Orthopedics. 2008; 31(12 suppl 2):88\u201391.","journal-title":"Orthopedics"},{"key":"e_1_3_1_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2008.03.010"},{"key":"e_1_3_1_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2007.12.020"},{"key":"e_1_3_1_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2009.10.013"},{"key":"e_1_3_1_9_2","doi-asserted-by":"publisher","DOI":"10.1054\/arth.2002.29327"},{"key":"e_1_3_1_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2007.06.004"},{"issue":"333","key":"e_1_3_1_11_2","first-page":"87","article-title":"Fatigue strength of polyethylene after sterilization by gamma irradiation or ethylene oxide","author":"Ries MD","year":"1996","unstructured":"Ries MD, Weaver K, Rose RM, Gunther J, Sauer W, Beals N. Fatigue strength of polyethylene after sterilization by gamma irradiation or ethylene oxide. Clin Orthop Relat Res. 1996; (333):87\u201395.","journal-title":"Clin Orthop Relat Res"},{"key":"e_1_3_1_12_2","unstructured":"Rosca M Postak PD Greenwald AS. Enhanced cross-linked polyethylene modular acetabular designs: performance characteristics. Orthopaedic Reserach Laboratories Web site. http:\/\/orl-inc.com\/hip_publications\/2008\/crosslinkedPolyCup.pdf. Updated 2008. Accessed March 26 2011."},{"issue":"296","key":"e_1_3_1_13_2","first-page":"154","article-title":"A comparison of the disassociation strength of modular acetabular components","author":"Tradonsky A","year":"1993","unstructured":"Tradonsky A, Postak SD, Froimson AI, Greenwald AS. A comparison of the disassociation strength of modular acetabular components. Clin Orthop Relat Res. 1993; (296):154\u2013160.","journal-title":"Clin Orthop Relat Res"},{"key":"e_1_3_1_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2004.06.004"},{"key":"e_1_3_1_15_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200207000-00016"},{"issue":"12","key":"e_1_3_1_16_2","first-page":"88","article-title":"Review of the evolution of the cementless acetabular cup","volume":"31","author":"Ries MD","year":"2008","unstructured":"Ries MD. Review of the evolution of the cementless acetabular cup. Orthopedics. 2008; 31(12 suppl 2):88\u201391.","journal-title":"Orthopedics"},{"key":"e_1_3_1_17_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.F.00758"},{"key":"e_1_3_1_18_2","unstructured":"Furmanski J Atwood SA Bal BS et al. Fracture of Highly Crosslinked UHMWPE Acetabular Liners. Orthopaedic Reserach Laboratories Web site. http:\/\/orl-inc.com\/hip_publications\/2008\/LinerFractureJevan.pdf. Updated 2008. Accessed March 26 2011."},{"key":"e_1_3_1_19_2","volume-title":"The Adult Hip","author":"Callaghan JJ","year":"2007","unstructured":"Callaghan JJ, Rosenberg AG, Rubash HE. The Adult Hip. 2nd ed. Philadelphia, PA: Lippincott Williams & Wilkins; 2007.","edition":"2"},{"key":"e_1_3_1_20_2","volume-title":"Poster presented at: American Academy of Orthopaedic Surgeons Proceedings","author":"Kindsfater K","unstructured":"Kindsfater K, Barrett W, Dowd J, South-worth C, Cassell M. Midterm survival of the Pinnacle multi-liner acetabular cup in a prospective multi-center study. Poster presented at: American Academy of Orthopaedic Surgeons Proceedings; February 16, 2007; San Diego, California. Poster No. PO77."},{"key":"e_1_3_1_21_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2009.02.018"}],"container-title":["Orthopedics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.slackinc.com\/doi\/resolver.asp?doi=10.3928\/01477447-20120327-29","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,5,2]],"date-time":"2023-05-02T14:02:58Z","timestamp":1683036178000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.healio.com\/doi\/10.3928\/01477447-20120327-29"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,4]]},"references-count":20,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2012,4]]}},"alternative-id":["10.3928\/01477447-20120327-29"],"URL":"https:\/\/doi.org\/10.3928\/01477447-20120327-29","relation":{},"ISSN":["0147-7447","1938-2367"],"issn-type":[{"value":"0147-7447","type":"print"},{"value":"1938-2367","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,4]]}}}