Prosthetic Replacement of the Medial Meniscus in Cadaveric Knees

Prosthetic Replacement of the Medial Meniscus in Cadaveric Knees

Meniscus replacement by a polymer meniscus prosthesis in dogs resulted in generation of new meniscal tissue. Hypothesis: Optimal functioning of the prosthesis would involve realistic deformation and motion patterns of the prosthesis during knee joint motion. Study Design: Controlled laboratory study...

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Veröffentlicht in:The American journal of sports medicine 2004-07, Vol.32 (5), p.1182
Hauptverfasser: T. G. Tienen, N. Verdonschot, R. G. J. C. Heijkants, P. Buma, J. G. F. Scholten, A. van Kampen, R. P. H. Veth
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container_issue 5
container_start_page 1182
container_title The American journal of sports medicine
container_volume 32
creator T. G. Tienen
N. Verdonschot
R. G. J. C. Heijkants
P. Buma
J. G. F. Scholten
A. van Kampen
R. P. H. Veth
description Meniscus replacement by a polymer meniscus prosthesis in dogs resulted in generation of new meniscal tissue. Hypothesis: Optimal functioning of the prosthesis would involve realistic deformation and motion patterns of the prosthesis during knee joint motion. Study Design: Controlled laboratory study. Methods: The movements of the meniscus were determined during knee joint flexion and extension with and without internal and external tibial torque by means of roentgen stereophotogrammetric analysis. Subsequently, the meniscus in 6 human cadaveric knee joints was replaced by a meniscus prosthesis. Results: All different parts of the meniscus showed a posterior displacement during knee joint flexion. The anterior horn was more mobile than the posterior horn. The prosthesis mimicked the movements of the meniscus. However, the excursions of the prosthesis on the tibial plateau were less. The knee joint laxity was not significantly higher after replacement with the meniscus prosthesis. Conclusions: The prosthesis approximated the behavior of the native meniscus. Improvement in both the gliding characteristics of the prosthetic material and the fixation of the prosthesis may improve the function. Clinical Relevance: The meniscus prosthesis needs to be optimized to achieve a better initial function in the knee joint. Keywords: trauma meniscus replacement roentgen stereophotogrammetric analysis (RSA) polymer
doi_str_mv 10.1177/0363546503262160
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The anterior horn was more mobile than the posterior horn. The prosthesis mimicked the movements of the meniscus. However, the excursions of the prosthesis on the tibial plateau were less. The knee joint laxity was not significantly higher after replacement with the meniscus prosthesis. Conclusions: The prosthesis approximated the behavior of the native meniscus. Improvement in both the gliding characteristics of the prosthetic material and the fixation of the prosthesis may improve the function. Clinical Relevance: The meniscus prosthesis needs to be optimized to achieve a better initial function in the knee joint. 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title Prosthetic Replacement of the Medial Meniscus in Cadaveric Knees
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