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Publication year
2006Source
American Journal of Sports Medicine, 34, 1, (2006), pp. 64-71ISSN
Publication type
Article / Letter to editor

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Organization
Orthopaedics
IQ Healthcare
Former Organization
Centre for Quality of Care Research
Journal title
American Journal of Sports Medicine
Volume
vol. 34
Issue
iss. 1
Page start
p. 64
Page end
p. 71
Subject
NCMLS 3: Tissue engineering and pathology; UMCN 4.3: Tissue engineering and reconstructive surgeryAbstract
BACKGROUND: Meniscectomy will lead to articular cartilage degeneration in the long term. Therefore, the authors developed an implant to replace the native meniscus. HYPOTHESIS: The porous polymer meniscus implant develops into a neomeniscus and protects the cartilage from degeneration. STUDY DESIGN: Controlled laboratory study. METHODS: In a dog model, a porous polymer scaffold with optimal properties for tissue infiltration and regeneration of a neomeniscus was implanted and compared with total meniscectomy. The tissue infiltration and redifferentiation in the scaffold, the stiffness of the scaffold, and the articular cartilage degeneration were evaluated. RESULTS: Three months after implantation, the implant was completely filled with fibrovascular tissue. After 6 months, the central areas of the implant contained cartilage-like tissue with abundant collagen type II and proteoglycans in their matrix. The foreign-body reaction remained limited to a few giant cells in the implant. The compression modulus of the implant-tissue construct still differed significantly from that of the native meniscus, even at 6 months. Cartilage degeneration was observed both in the meniscectomy group and in the implant group. CONCLUSION: The improved properties of these polymer implants resulted in a faster tissue infiltration and in phenotypical differentiation into tissue resembling that of the native meniscus. However, the material characteristics of the implant need to be improved to prevent degeneration of the articular cartilage. CLINICAL RELEVANCE: The porous polymer implant developed into a polymer-tissue construct that resembled the native meniscus, and with improved gliding characteristics, this prosthesis might be a promising implant for the replacement of the meniscus.
This item appears in the following Collection(s)
- Academic publications [205104]
- Electronic publications [103316]
- Faculty of Medical Sciences [81055]
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