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Orthopaedic Research Institute at the Southern California Center for Sports Medicine and Long Beach Memorial Medical Center, Long Beach
Orthopaedic Research Institute at the Southern California Center for Sports Medicine and Long Beach Memorial Medical Center, Long Beach
Orthopaedic Research Institute at the Southern California Center for Sports Medicine and Long Beach Memorial Medical Center, Long Beach
Pacific Coast Tissue Bank, Los Angeles, California
A matrix of demineralized cortical bone was used to reconstruct the anterior cruciate ligament in the goat model. This graft underwent considerable site-specific remodeling and transformation from a Haversian sys tem at time zero into a ligament-like structure at 1 year. This transformation included new bone formation filling the osseous tunnels and replacing the demineralized matrix, development of a ligament-like transition zone within the graft, and ligamentous collagen orientation with crimp in the intraarticular portion of the graft. One year after surgery, the mean anterior-posterior trans lation in the reconstructed stifle joints at 30 N of tibial loading was 2.1 ± 0.4 mm (±SEM). The mean ultimate force to failure for the reconstructed ligament at 1 year was 474 ± 146 N compared with the time-zero (initial) strength of the matrix of 73 ± 9 N. The cellular repopu lation of the graft had no associated inflammatory cells. The potential clinical significance of these findings in cludes 1) replacement of a collagen matrix with bone within the osseous tunnels, 2) establishment of a more physiologic fibrocartilage transition at the graft inser tion site, 3) the time-zero structural properties of a collagen matrix increasing to more desired values with biologic remodeling, and 4) a sterile biologic allograft with essentially no long-term inflammatory response.
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O. Gurevitch, B. G. S. Kurkalli, T. Prigozhina, J. Kasir, A. Gaft, and S. Slavin Reconstruction of Cartilage, Bone, and Hematopoietic Microenvironment with Demineralized Bone Matrix and Bone Marrow Cells Stem Cells, September 1, 2003; 21(5): 588 - 597. [Abstract] [Full Text] [PDF] |
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F. H. Fu, C. H. Bennett, C. B. Ma, J. Menetrey, and C. Lattermann Current Trends in Anterior Cruciate Ligament Reconstruction: Part II. Operative Procedures and Clinical Correlations Am. J. Sports Med., January 1, 2000; 28(1): 124 - 130. [Abstract] [Full Text] [PDF] |
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