Quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.

Meniscus tears of the knee are among the most common orthopedic knee injury. Specifically, tears of the posterior root can result in abnormal meniscal extrusion leading to decreased function and progressive osteoarthritis. Despite contemporary surgical treatments of posterior meniscus root tears, th...

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Autores principales:	Brian E Walczak, Kyle Miller, Michael A Behun, Lisa Sienkiewicz, Heather Hartwig Stokes, Ron McCabe, Geoffrey S Baer
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/169c34a1ebdd4adbb2442a6a0b527b84
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spelling	oai:doaj.org-article:169c34a1ebdd4adbb2442a6a0b527b842021-12-02T20:07:39ZQuantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.1932-620310.1371/journal.pone.0259678https://doaj.org/article/169c34a1ebdd4adbb2442a6a0b527b842021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0259678https://doaj.org/toc/1932-6203Meniscus tears of the knee are among the most common orthopedic knee injury. Specifically, tears of the posterior root can result in abnormal meniscal extrusion leading to decreased function and progressive osteoarthritis. Despite contemporary surgical treatments of posterior meniscus root tears, there is a low rate of healing and an incidence of residual meniscus extrusion approaching 30%, illustrating an inability to recapitulate native meniscus function. Here, we characterized the differential functional behavior of the medial and lateral meniscus during axial compression load and dynamic knee motion using a cadaveric model. We hypothesized essential differences in extrusion between the medial and lateral meniscus in response to axial compression and knee range of motion. We found no differences in the amount of meniscus extrusion between the medial and lateral meniscus with a competent posterior root (0.338mm vs. 0.235mm; p-value = 0.181). However, posterior root detachment resulted in a consistently increased meniscus extrusion for the medial meniscus compared to the lateral meniscus (2.233mm vs. 0.4705mm; p-value < 0.0001). Moreover, detachment of the posterior root of the medial meniscus resulted in an increase in extrusion at all angles of knee flexion and was most pronounced (4.00mm ± 1.26mm) at 30-degrees of knee flexion. In contrast, the maximum mean extrusion of the lateral meniscus was 1.65mm ± 0.97mm, occurring in full extension. Furthermore, only the medial meniscus extruded during dynamic knee flexion after posterior root detachment. Given the differential functional behaviors between the medial and lateral meniscus, these findings suggest that posterior root repair requires reducing overall meniscus extrusion and recapitulating the native functional responses specific to each meniscus.Brian E WalczakKyle MillerMichael A BehunLisa SienkiewiczHeather Hartwig StokesRon McCabeGeoffrey S BaerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11, p e0259678 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Brian E Walczak Kyle Miller Michael A Behun Lisa Sienkiewicz Heather Hartwig Stokes Ron McCabe Geoffrey S Baer Quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.
description	Meniscus tears of the knee are among the most common orthopedic knee injury. Specifically, tears of the posterior root can result in abnormal meniscal extrusion leading to decreased function and progressive osteoarthritis. Despite contemporary surgical treatments of posterior meniscus root tears, there is a low rate of healing and an incidence of residual meniscus extrusion approaching 30%, illustrating an inability to recapitulate native meniscus function. Here, we characterized the differential functional behavior of the medial and lateral meniscus during axial compression load and dynamic knee motion using a cadaveric model. We hypothesized essential differences in extrusion between the medial and lateral meniscus in response to axial compression and knee range of motion. We found no differences in the amount of meniscus extrusion between the medial and lateral meniscus with a competent posterior root (0.338mm vs. 0.235mm; p-value = 0.181). However, posterior root detachment resulted in a consistently increased meniscus extrusion for the medial meniscus compared to the lateral meniscus (2.233mm vs. 0.4705mm; p-value < 0.0001). Moreover, detachment of the posterior root of the medial meniscus resulted in an increase in extrusion at all angles of knee flexion and was most pronounced (4.00mm ± 1.26mm) at 30-degrees of knee flexion. In contrast, the maximum mean extrusion of the lateral meniscus was 1.65mm ± 0.97mm, occurring in full extension. Furthermore, only the medial meniscus extruded during dynamic knee flexion after posterior root detachment. Given the differential functional behaviors between the medial and lateral meniscus, these findings suggest that posterior root repair requires reducing overall meniscus extrusion and recapitulating the native functional responses specific to each meniscus.
format	article
author	Brian E Walczak Kyle Miller Michael A Behun Lisa Sienkiewicz Heather Hartwig Stokes Ron McCabe Geoffrey S Baer
author_facet	Brian E Walczak Kyle Miller Michael A Behun Lisa Sienkiewicz Heather Hartwig Stokes Ron McCabe Geoffrey S Baer
author_sort	Brian E Walczak
title	Quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.
title_short	Quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.
title_full	Quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.
title_fullStr	Quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.
title_full_unstemmed	Quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.
title_sort	quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/169c34a1ebdd4adbb2442a6a0b527b84
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Quantifying the differential functional behavior between the medial and lateral meniscus after posterior meniscus root tears.

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