{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T11:07:57Z","timestamp":1768475277074,"version":"3.49.0"},"reference-count":30,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2017,5,24]],"date-time":"2017-05-24T00:00:00Z","timestamp":1495584000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001343","name":"University of Pretoria","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001343","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Veterinary Surgery"],"published-print":{"date-parts":[[2017,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To determine the stability of a simulated complete L7\u2010S1 fracture\u2010luxation immobilized with SOP locking plate system, compared to pins and polymethylmethacrylate (PMMA).<\/jats:p><\/jats:sec><jats:sec><jats:title>Study design<\/jats:title><jats:p>In vitro biomechanical study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Animals<\/jats:title><jats:p>Cadaver specimens of 18 skeletally mature large\u2010breed dogs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Specimens were randomly stabilized with one of the two fixation techniques. Lumbosacral spine specimens (L5\u2010S3) were subjected to a bending moment applied to the caudal and cranial ends of the specimen. The biomechanical parameters (ie, range of motion [ROM], neutral zone [NZ], and elastic zone stiffness [EZS]) were compared between fixation techniques.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>No difference was found between the means of the NZ in flexion (<jats:italic>P<\/jats:italic>\u2009=\u2009.3458), extension (<jats:italic>P<\/jats:italic>\u2009=\u2009.1255), and total value (<jats:italic>P<\/jats:italic>\u2009=\u2009.3458) of L7\u2010S1 stabilized with the two fixation techniques. Mean ROM in flexion (<jats:italic>P<\/jats:italic>\u2009=\u2009.2386), extension (<jats:italic>P<\/jats:italic>\u2009=\u2009.1255), and mean of EZS in extension (<jats:italic>P<\/jats:italic>\u2009=\u2009.4094) did not differ between fixations. The only significant differences were in the means of total ROM and means of the EZS in flexion, with the means being smaller with SOP fixation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The stability of the two fixation techniques in flexion and in extension was similar for the L7\u2010S1 and adjacent L5\u2010L6 junctions, while the mean of ROM of L6\u2010L7 in flexion was smaller with SOP fixation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Clinical Relevance<\/jats:title><jats:p>Stability of the resulting construct should be considered when selecting an implant. Our results provide evidence that fixation via pin\u2010PMMA or SOP provide similar stability for L7\u2010S1 fracture\u2010luxation. In this context, other factors become more important in selecting the fixation method.<\/jats:p><\/jats:sec>","DOI":"10.1111\/vsu.12673","type":"journal-article","created":{"date-parts":[[2017,5,25]],"date-time":"2017-05-25T16:40:32Z","timestamp":1495730432000},"page":"789-796","source":"Crossref","is-referenced-by-count":11,"title":["Biomechanical comparison between pins and polymethylmethacrylate and the SOP locking plate system to stabilize canine lumbosacral fracture\u2010luxation in flexion and extension"],"prefix":"10.1111","volume":"46","author":[{"given":"Johannes J.","family":"Nel","sequence":"first","affiliation":[{"name":"Department Companion Animal Clinical Studies, Faculty of Veterinary Science University of Pretoria Pretoria South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cor\u2010Jacques","family":"Kat","sequence":"additional","affiliation":[{"name":"Department of Mechanical &amp; Aeronautical Engineering University of Pretoria Pretoria South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gert L.","family":"Coetzee","sequence":"additional","affiliation":[{"name":"Department Companion Animal Clinical Studies, Faculty of Veterinary Science University of Pretoria Pretoria South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul J.","family":"van Staden","sequence":"additional","affiliation":[{"name":"Department of Statistics University of Pretoria Pretoria South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2017,5,24]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1748-5827.1996.tb02421.x"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0037-1618862"},{"key":"e_1_2_7_4_1","first-page":"1312","volume-title":"Small Animal Surgery","author":"Seim HB.","year":"2002"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-950X.2007.00336.x"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0007-1935(86)90085-0"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cvsm.2010.05.004"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-950X.1981.tb00636.x"},{"key":"e_1_2_7_9_1","doi-asserted-by":"crossref","first-page":"1965","DOI":"10.2460\/javma.1991.198.11.1965","article-title":"Management of vertebral column fractures in dogs and cats: 211 cases (1977\u20101985)","volume":"198","author":"Selcer RR","year":"1991","journal-title":"J Am Vet Med Assoc."},{"key":"e_1_2_7_10_1","first-page":"175","article-title":"Physical and biological aspects of fracture healing with special reference to internal fixation","volume":"138","author":"Perren SM.","year":"1979","journal-title":"Clin Orthop Relat Res."},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-950X.1986.tb00192.x"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-950X.2010.00755.x"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-950X.2000.00070.x"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1748-5827.2009.00808.x"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-950X.1994.tb00491.x"},{"key":"e_1_2_7_16_1","unstructured":"McKeeWM.SOP and spines. 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