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pubmed-article:19365110pubmed:issue6lld:pubmed
pubmed-article:19365110pubmed:dateCreated2009-11-20lld:pubmed
pubmed-article:19365110pubmed:abstractTextTotal disk arthroplasty (TDA) is a new procedure that replaces the intervertebral disk space with an artificial motion segment and necessitates the resection of the anterior longitudinal ligament (ALL). We assessed whether a collagen-based graft made from porcine small-intestine submucosa (SIS) can be used as a regenerative scaffold to restore the function and structure of the ALL in the lumbar spine. A total of 10 mature male baboons underwent TDA at L5-L6 using one of two treatments: (1) TDA only (n = 5) or (2) TDA combined with SIS (n = 5). Six months postoperatively, mock revision surgery was performed to assess tissue adhesions followed by non-destructive multidirectional flexibility testing of the spinal segment. The vertebral segments were then processed for histology. The tissue adhesion score was 2.8 +/- 0.8 in the TDA only group and 1.8 +/- 1.4 in the TDA-SIS group (p = 0.2). Segmental range of motion and the length of the neutral zone were similar in both groups. Histology showed that the SIS scaffold led to an organized ligamentous structure with a significantly (p = 0.027) higher thickness (2.18 +/- 0.25 mm) compared to the connective tissue structure in the TDA-only group (1.66 +/- 0.33 mm). We concluded that using a SIS bioscaffold after TDA did not lead to increased great vessel adhesion while its use facilitated the formation of highly organized ligamentous tissues. However, the SIS- induced and newly formed ligamentous tissue anterior to the spinal segment did not lead to a measurable limitation of spinal extension.lld:pubmed
pubmed-article:19365110pubmed:languageenglld:pubmed
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pubmed-article:19365110pubmed:statusMEDLINElld:pubmed
pubmed-article:19365110pubmed:issn1422-6421lld:pubmed
pubmed-article:19365110pubmed:authorpubmed-author:McAfeePaul...lld:pubmed
pubmed-article:19365110pubmed:authorpubmed-author:CunninghamBry...lld:pubmed
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pubmed-article:19365110pubmed:authorpubmed-author:HuNianbinNlld:pubmed
pubmed-article:19365110pubmed:authorpubmed-author:BeatsonHelen...lld:pubmed
pubmed-article:19365110pubmed:copyrightInfo2009 S. Karger AG, Basel.lld:pubmed
pubmed-article:19365110pubmed:issnTypeElectroniclld:pubmed
pubmed-article:19365110pubmed:volume190lld:pubmed
pubmed-article:19365110pubmed:ownerNLMlld:pubmed
pubmed-article:19365110pubmed:authorsCompleteYlld:pubmed
pubmed-article:19365110pubmed:pagination347-55lld:pubmed
pubmed-article:19365110pubmed:dateRevised2011-11-17lld:pubmed
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pubmed-article:19365110pubmed:year2009lld:pubmed
pubmed-article:19365110pubmed:articleTitleRegeneration of a spinal ligament after total lumbar disk arthroplasty in primates.lld:pubmed
pubmed-article:19365110pubmed:affiliationDepartment of Orthopedic Surgery, Union Memorial Hospital, Baltimore, MD, USA.lld:pubmed
pubmed-article:19365110pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:19365110pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed