Three-dimensional computed tomography confirmed that the meniscal root attachments and meniscofemoral ligaments are morp
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Three‑dimensional computed tomography confirmed that the meniscal root attachments and meniscofemoral ligaments are morphologically consistent Koh Tanifuji1 · Goro Tajima1 · Jun Yan2 · Moritaka Maruyama1 · Atsushi Sugawara1 · Shinya Oikawa1 · Ryunosuke Oikawa1 · Sho Kikuchi1 · Minoru Doita1 Received: 3 February 2020 / Accepted: 10 June 2020 © European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2020
Abstract Purpose To clarify the characteristic features of the meniscal root attachments, meniscofemoral ligaments (MFLs), and related osseous landmarks on three-dimensional images using computed tomography. Methods Twenty-eight non-paired, formalin-fixed human cadaveric knees were evaluated in this study. The meniscal root attachments were identified and marked. Three-dimensional images were obtained after applying a contrast agent to the entire meniscal surfaces and MFLs, then the morphology of the meniscal root attachments and MFLs, and their positional relationships with osseous landmarks, were analyzed. Results Parsons’ knob divided the medial meniscal anterior root attachment and lateral meniscal anterior root attachment on the anterior portion of the tibial plateau. The medial meniscal posterior root attachment was near the medial intercondylar tubercle. The lateral meniscal posterior root attachment (LMPRA) was closer to the lateral intercondylar tubercle. Both root attachments were near the posterior intercondylar fossa. The positional relationships between the meniscal root attachments and related osseous landmarks were consistent in all specimens. The MFLs originated from the lateral meniscus posterior horn, and the anterior MFL was closer to the LMPRA than the posterior MFL. The posterior MFL originated at approximately the midpoint between the LMPRA and the most posterior margin of the lateral meniscus. Conclusion This study showed that the relationships between the characteristic features of the meniscal root attachments, MFLs, and related osseous landmarks were consistent. The clinical relevance of this study is that it improved understanding of the anatomy of the meniscal root attachments and MFLs. Keywords Meniscal root attachments · Meniscofemoral ligaments · Knee · Three-dimensional computed tomography Abbreviations MMARA Medial meniscal anterior root attachment LMARA Lateral meniscal anterior root attachment MMPRA Medial meniscal posterior root attachment LMPRA Lateral meniscal posterior root attachment MIT Medial intercondylar tubercle LIT Lateral intercondylar tubercle PIF Posterior intercondylar fossa MFLs Meniscofemoral ligaments * Goro Tajima gorot@iwate‑med.ac.jp 1
Department of Orthopedic Surgery, Iwate Medical University, 2‑1‑1, Idaidori, Yahaba, Iwate, Japan
Department of Anatomy, Iwate Medical University, 2‑1‑1, Idaidori, Yahaba, Iwate, Japan
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aMFL Anterior meniscofemoral ligament pMFL Posterior meniscofemoral ligament 3D Three-dimensional CT Computed tomography
Introduction The menisci play important roles in load-bearing and sh
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