The anterior cruciate ligament-lateral meniscus complex: A histological study

Takayuki Furumatsu; Yuya Kodama; Ami Maehara; Shinichi Miyazawa; Masataka Fujii; Takaaki Tanaka; Hiroto Inoue; Toshifumi Ozaki

doi:10.3109/03008207.2015.1081899

The anterior cruciate ligament-lateral meniscus complex: A histological study

Takayuki Furumatsu, Yuya Kodama, Ami Maehara, Shinichi Miyazawa, Masataka Fujii, Takaaki Tanaka, Hiroto Inoue, Toshifumi Ozaki

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The anterior root of the lateral meniscus (LM) dives underneath the tibial attachment of the anterior cruciate ligament (ACL). Although the distinct role of meniscal attachments has been investigated, the relationship between the LM anterior insertion (LMAI) and ACL tibial insertion (ACLTI) remains unclear. This study histologically analyzed the LMAI and ACLTI. Samples were divided into four regions in an anterior-to-posterior direction. Histological measurements of these insertion sites were performed using safranin O-stained coronal sections. Distribution and signal densities of type I and II collagen were quantified. The ACLTI and LMAI formed the ACL-LM complex via fiber connections. The anterior part of the ACLTI had a widespread attachment composed of dense fibers. Attachment fibers of the LMAI became dense and wide gradually at the middle-to-posterior region. The ACL-LM transition zone (ALTZ) was observed between the LMAI and the lateral border of the ACLTI at the middle part of the ACL tibial footprint. Type II collagen density of the LMAI was higher than that of the ACLTI and ALTZ. Our results can help create an accurate tibial bone tunnel within the dense ACL attachment during ACL reconstruction surgery.

Original language	English
Pages (from-to)	91-98
Number of pages	8
Journal	Connective Tissue Research
Volume	57
Issue number	2
DOIs	https://doi.org/10.3109/03008207.2015.1081899
Publication status	Published - Mar 3 2016

Keywords

Anterior cruciate ligament
bridging fiber
lateral meniscus
tibial insertion
transition zone

ASJC Scopus subject areas

Rheumatology
Biochemistry
Orthopedics and Sports Medicine
Molecular Biology
Cell Biology

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10.3109/03008207.2015.1081899

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title = "The anterior cruciate ligament-lateral meniscus complex: A histological study",

abstract = "The anterior root of the lateral meniscus (LM) dives underneath the tibial attachment of the anterior cruciate ligament (ACL). Although the distinct role of meniscal attachments has been investigated, the relationship between the LM anterior insertion (LMAI) and ACL tibial insertion (ACLTI) remains unclear. This study histologically analyzed the LMAI and ACLTI. Samples were divided into four regions in an anterior-to-posterior direction. Histological measurements of these insertion sites were performed using safranin O-stained coronal sections. Distribution and signal densities of type I and II collagen were quantified. The ACLTI and LMAI formed the ACL-LM complex via fiber connections. The anterior part of the ACLTI had a widespread attachment composed of dense fibers. Attachment fibers of the LMAI became dense and wide gradually at the middle-to-posterior region. The ACL-LM transition zone (ALTZ) was observed between the LMAI and the lateral border of the ACLTI at the middle part of the ACL tibial footprint. Type II collagen density of the LMAI was higher than that of the ACLTI and ALTZ. Our results can help create an accurate tibial bone tunnel within the dense ACL attachment during ACL reconstruction surgery.",

keywords = "Anterior cruciate ligament, bridging fiber, lateral meniscus, tibial insertion, transition zone",

author = "Takayuki Furumatsu and Yuya Kodama and Ami Maehara and Shinichi Miyazawa and Masataka Fujii and Takaaki Tanaka and Hiroto Inoue and Toshifumi Ozaki",

note = "Funding Information: Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the article. This study was supported by grants from the Japanese Foundation for Research and Promotion of Endoscopy and the JSPS Fujita Memorial Fund for Medical Research. Publisher Copyright: {\textcopyright} 2016 Taylor & Francis.",

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AU - Furumatsu, Takayuki

AU - Kodama, Yuya

AU - Maehara, Ami

AU - Miyazawa, Shinichi

AU - Fujii, Masataka

AU - Tanaka, Takaaki

AU - Inoue, Hiroto

AU - Ozaki, Toshifumi

N1 - Funding Information: Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the article. This study was supported by grants from the Japanese Foundation for Research and Promotion of Endoscopy and the JSPS Fujita Memorial Fund for Medical Research. Publisher Copyright: © 2016 Taylor & Francis.

PY - 2016/3/3

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AB - The anterior root of the lateral meniscus (LM) dives underneath the tibial attachment of the anterior cruciate ligament (ACL). Although the distinct role of meniscal attachments has been investigated, the relationship between the LM anterior insertion (LMAI) and ACL tibial insertion (ACLTI) remains unclear. This study histologically analyzed the LMAI and ACLTI. Samples were divided into four regions in an anterior-to-posterior direction. Histological measurements of these insertion sites were performed using safranin O-stained coronal sections. Distribution and signal densities of type I and II collagen were quantified. The ACLTI and LMAI formed the ACL-LM complex via fiber connections. The anterior part of the ACLTI had a widespread attachment composed of dense fibers. Attachment fibers of the LMAI became dense and wide gradually at the middle-to-posterior region. The ACL-LM transition zone (ALTZ) was observed between the LMAI and the lateral border of the ACLTI at the middle part of the ACL tibial footprint. Type II collagen density of the LMAI was higher than that of the ACLTI and ALTZ. Our results can help create an accurate tibial bone tunnel within the dense ACL attachment during ACL reconstruction surgery.

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The anterior cruciate ligament-lateral meniscus complex: A histological study

Abstract

Keywords

ASJC Scopus subject areas

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