{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,1]],"date-time":"2026-02-01T21:23:01Z","timestamp":1769980981762,"version":"3.49.0"},"reference-count":23,"publisher":"British Editorial Society of Bone & Joint Surgery","issue":"1","license":[{"start":{"date-parts":[[2014,1,1]],"date-time":"2014-01-01T00:00:00Z","timestamp":1388534400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/online.boneandjoint.org.uk\/TDM"}],"content-domain":{"domain":["online.boneandjoint.org.uk"],"crossmark-restriction":true},"short-container-title":["The Bone &amp; Joint Journal"],"published-print":{"date-parts":[[2014,1]]},"abstract":"<jats:p> We investigated a new intramedullary locking nail that allows the distal interlocking screws to be locked to the nail. We compared fixation using this new implant with fixation using either a conventional nail or a locking plate in a laboratory simulation of an osteoporotic fracture of the distal femur. A total of 15 human cadaver femora were used to simulate an AO 33-A3 fracture pattern. Paired specimens compared fixation using either a locking or non-locking retrograde nail, and using either a locking retrograde nail or a locking plate. The constructs underwent cyclical loading to simulate single-leg stance up to 125 000 cycles. Axial and torsional stiffness and displacement, cycles to failure and modes of failure were recorded for each specimen. When compared with locking plate constructs, locking nail constructs had significantly longer mean fatigue life (75 800 cycles (sd 33 900) vs 12 800 cycles (sd 6100); p = 0.007) and mean axial stiffness (220\u00a0N\/mm (sd 80) vs 70\u00a0N\/mm (sd 18); p\u00a0= 0.005), but lower mean torsional stiffness (2.5 Nm\/\u00b0 (sd 0.9) vs 5.1 Nm\/\u00b0 (sd 1.5); p\u00a0=\u00a00.008). In addition, in the nail group the mode of failure was either cut-out of the distal screws or breakage of nails, and in the locking plate group breakage of the plate was always the mode of failure. Locking nail constructs had significantly longer mean fatigue life than non-locking nail constructs (78\u00a0900 cycles (sd 25 600) vs 52\u00a0400 cycles (sd 22 500); p = 0.04). <\/jats:p><jats:p> The new locking retrograde femoral nail showed better stiffness and fatigue life than locking plates, and superior fatigue life to non-locking nails, which may be advantageous in elderly patients. <\/jats:p><jats:p> Cite this article: Bone Joint J 2014;96-B:114\u201321. <\/jats:p>","DOI":"10.1302\/0301-620x.96b1.31135","type":"journal-article","created":{"date-parts":[[2014,1,6]],"date-time":"2014-01-06T10:23:46Z","timestamp":1389003826000},"page":"114-121","update-policy":"https:\/\/doi.org\/10.1302\/crossmark-policy","source":"Crossref","is-referenced-by-count":41,"title":["Retrograde intramedullary nails with distal screws locked to the nail have higher fatigue strength than locking plates in the treatment of supracondylar femoral fractures"],"prefix":"10.1302","volume":"96-B","author":[{"given":"M.","family":"Pekmezci","sequence":"first","affiliation":[{"name":"Orthopaedic Trauma Institute, 2550\r23rd Street, Building 9, 2nd\rFloor, San Francisco, California\r94110, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E.","family":"McDonald","sequence":"additional","affiliation":[{"name":"Orthopaedic Trauma Institute, 2550\r23rd Street, Building 9, 2nd\rFloor, San Francisco, California\r94110, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Buckley","sequence":"additional","affiliation":[{"name":"University of Delaware, Department\rof Mechanical Engineering, 106 Spencer Lab, Newark, Delaware, 19716, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"U.","family":"Kandemir","sequence":"additional","affiliation":[{"name":"Orthopaedic Trauma Institute, 2550\r23rd Street, Building 9, 2nd\rFloor, San Francisco, California\r94110, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"42","reference":[{"key":"r1","doi-asserted-by":"publisher","DOI":"10.1007\/s00198-009-0962-6"},{"key":"r2","first-page":"77","volume":"138","author":"Schatzker J","year":"1979","journal-title":"Clin Orthop Relat Res"},{"key":"r3","doi-asserted-by":"publisher","DOI":"10.1097\/01.blo.0000141935.86481.ba"},{"key":"r4","doi-asserted-by":"publisher","DOI":"10.1080\/00016470410001708110"},{"key":"r5","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-1383(01)00181-4"},{"key":"r6","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2006.07.001"},{"key":"r7","doi-asserted-by":"publisher","DOI":"10.1097\/TA.0b013e31819d9cb2"},{"key":"r8","doi-asserted-by":"publisher","DOI":"10.1097\/00005131-200409000-00006"},{"key":"r9","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-1383(01)00184-X"},{"key":"r10","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-004-0609-3"},{"key":"r11","doi-asserted-by":"publisher","DOI":"10.1097\/00005131-200409000-00004"},{"key":"r12","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-1383(01)00183-8"},{"key":"r13","doi-asserted-by":"publisher","DOI":"10.1054\/arth.2002.34817"},{"key":"r14","doi-asserted-by":"publisher","DOI":"10.1097\/TA.0b013e31815edeb8"},{"key":"r15","doi-asserted-by":"publisher","DOI":"10.1016\/j.jse.2006.01.019"},{"key":"r16","unstructured":"No authors listed. Report of a WHO Study Group: Assessment of fracture risk and its application to screening for postmenopausal osteoporosis. Geneva, World Health Organization, 1994 (WHO Technical Report Series, No. 843)."},{"key":"r17","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199911000-00005"},{"key":"r18","doi-asserted-by":"publisher","DOI":"10.1097\/01.bot.0000155312.12510.bd"},{"key":"r19","doi-asserted-by":"publisher","DOI":"10.1097\/00005131-200711101-00001"},{"key":"r20","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9290(97)00057-2"},{"key":"r21","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiomech.2006.01.017"},{"key":"r22","doi-asserted-by":"publisher","DOI":"10.1007\/s11420-010-9194-8"},{"key":"r23","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.H.01722"}],"container-title":["The Bone &amp; Joint Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/online.boneandjoint.org.uk\/doi\/pdf\/10.1302\/0301-620X.96B1.31135","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/online.boneandjoint.org.uk\/doi\/full-xml\/10.1302\/0301-620X.96B1.31135","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/online.boneandjoint.org.uk\/doi\/pdf\/10.1302\/0301-620X.96B1.31135","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,10,19]],"date-time":"2021-10-19T04:31:00Z","timestamp":1634617860000},"score":1,"resource":{"primary":{"URL":"https:\/\/online.boneandjoint.org.uk\/doi\/10.1302\/0301-620X.96B1.31135"}},"subtitle":["A cadaver-based laboratory investigation"],"short-title":[],"issued":{"date-parts":[[2014,1]]},"references-count":23,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2014,1]]}},"alternative-id":["10.1302\/0301-620X.96B1.31135"],"URL":"https:\/\/doi.org\/10.1302\/0301-620x.96b1.31135","relation":{},"ISSN":["2049-4394","2049-4408"],"issn-type":[{"value":"2049-4394","type":"print"},{"value":"2049-4408","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,1]]},"assertion":[{"value":"2012-10-21","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2013-08-23","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2014-01-01","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}