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A cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect

Osteochondral transplantation is a successful treatment for full-thickness cartilage defects, which without treatment would lead to early osteoarthritis. Restoration of surface congruency and stability of the reconstruction may be jeopardized by early mobilization. To investigate the biomechanical e...

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Autores principales: Kock, Niels B., Smolders, José M. H., van Susante, Job L. C., Buma, Pieter, van Kampen, Albert, Verdonschot, Nico
Formato: Texto
Lenguaje:English
Publicado: Springer-Verlag 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2358931/
https://www.ncbi.nlm.nih.gov/pubmed/18292989
http://dx.doi.org/10.1007/s00167-008-0494-1
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author Kock, Niels B.
Smolders, José M. H.
van Susante, Job L. C.
Buma, Pieter
van Kampen, Albert
Verdonschot, Nico
author_facet Kock, Niels B.
Smolders, José M. H.
van Susante, Job L. C.
Buma, Pieter
van Kampen, Albert
Verdonschot, Nico
author_sort Kock, Niels B.
collection PubMed
description Osteochondral transplantation is a successful treatment for full-thickness cartilage defects, which without treatment would lead to early osteoarthritis. Restoration of surface congruency and stability of the reconstruction may be jeopardized by early mobilization. To investigate the biomechanical effectiveness of osteochondral transplantation, we performed a standardized osteochondral transplantation in eight intact human cadaver knees, using three cylindrical plugs on a full-thickness cartilage defect, bottomed on one condyle, unbottomed on the contralateral condyle. Surface pressure measurements with Tekscan pressure transducers were performed after five conditions. In the presence of a defect the border contact pressure of the articular cartilage defect significantly increased to 192% as compared to the initially intact joint surface. This was partially restored with osteochondral transplantation (mosaicplasty), as the rim stress subsequently decreased to 135% of the preoperative value. Following weight bearing motion two out of eight unbottomed mosaicplasties showed subsidence of the plugs according to Tekscan measurements. This study demonstrates that a three-plug mosaicplasty is effective in restoring the increased border contact pressure of a cartilage defect, which may postpone the development of early osteoarthritis. Unbottomed mosaicplasties may be more susceptible for subsidence below flush level after (unintended) weight bearing motion.
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spelling pubmed-23589312008-05-01 A cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect Kock, Niels B. Smolders, José M. H. van Susante, Job L. C. Buma, Pieter van Kampen, Albert Verdonschot, Nico Knee Surg Sports Traumatol Arthrosc Knee Osteochondral transplantation is a successful treatment for full-thickness cartilage defects, which without treatment would lead to early osteoarthritis. Restoration of surface congruency and stability of the reconstruction may be jeopardized by early mobilization. To investigate the biomechanical effectiveness of osteochondral transplantation, we performed a standardized osteochondral transplantation in eight intact human cadaver knees, using three cylindrical plugs on a full-thickness cartilage defect, bottomed on one condyle, unbottomed on the contralateral condyle. Surface pressure measurements with Tekscan pressure transducers were performed after five conditions. In the presence of a defect the border contact pressure of the articular cartilage defect significantly increased to 192% as compared to the initially intact joint surface. This was partially restored with osteochondral transplantation (mosaicplasty), as the rim stress subsequently decreased to 135% of the preoperative value. Following weight bearing motion two out of eight unbottomed mosaicplasties showed subsidence of the plugs according to Tekscan measurements. This study demonstrates that a three-plug mosaicplasty is effective in restoring the increased border contact pressure of a cartilage defect, which may postpone the development of early osteoarthritis. Unbottomed mosaicplasties may be more susceptible for subsidence below flush level after (unintended) weight bearing motion. Springer-Verlag 2008-02-22 2008-05 /pmc/articles/PMC2358931/ /pubmed/18292989 http://dx.doi.org/10.1007/s00167-008-0494-1 Text en © The Author(s) 2008
spellingShingle Knee
Kock, Niels B.
Smolders, José M. H.
van Susante, Job L. C.
Buma, Pieter
van Kampen, Albert
Verdonschot, Nico
A cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect
title A cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect
title_full A cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect
title_fullStr A cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect
title_full_unstemmed A cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect
title_short A cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect
title_sort cadaveric analysis of contact stress restoration after osteochondral transplantation of a cylindrical cartilage defect
topic Knee
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2358931/
https://www.ncbi.nlm.nih.gov/pubmed/18292989
http://dx.doi.org/10.1007/s00167-008-0494-1
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