Meniscal attachments are ligamentous tissues anchoring the menisci to the underlying subchondral bone. Currently little is known about the behavior of meniscal attachments, with only a few studies quantitatively documenting their properties. The objective of this study was to quantify and compare the tensile mechanical properties of human meniscal attachments in the transverse direction, curve fit experimental Cauchy stress-stretch data to evaluate the hyperelastic behavior, and couple these results with previously obtained longitudinal data to generate a more complete constitutive model. Meniscal attachment specimens were tested using a uniaxial tension test with the collagen fibers oriented perpendicular to the loading axis. Tests were run until failure and load-optical displacement data was recorded for each test. The medial posterior attachment was shown to have a significantly greater elastic modulus (6.42±0.78 MPa) and ultimate stress (1.73±0.32 MPa) when compared to the other three attachments. The Mooney-Rivlin material model was selected as the best fit for the transverse data and used in conjunction with the longitudinal data. A novel computational approach to determining the transition point between the toe and linear regions is presented for the hyperelastic stress-stretch curves. Results from piece-wise non-linear longitudinal curve fitting correlate well with previous linear elastic and SEM findings. These data can be used to advance the design of meniscal replacements and improve knee joint finite element models.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3022997 | PMC |
| http://dx.doi.org/10.1016/j.jbiomech.2010.10.001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Functional and Radiological Outcome of Meniscal Repair and Conservative Management for Medial Meniscal Root Tear - A Prospective Comparative Study.
J Orthop Case Rep
December 2024
Department of Orthopaedics, Chettinad Hospital and Research Education, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu, India.
Introduction: To sustain hoop stress, prevent extrusion, and maintaining the function of the meniscus, the posterior root attachment point of the medial meniscus is essential. The purpose of this study is to determine the functional and radiological outcome of conservative therapy and meniscal repair for medial meniscal root tears.
Materials And Methods: Prospective evaluations were performed on forty individuals who confirmed a diagnosis of Medial meniscus root tear (MMRT).
Evaluation of the reliability and accuracy of MRI for the diagnosis of meniscal ramp lesions.
Acta Radiol
November 2024
Department of Orthopedic Surgery, Clínica Molinón, Gijón, Spain.
Background: Meniscal ramp lesions are a special type of meniscal injury that affects the periphery of the posterior horn of the medial meniscus and/or its meniscocapsular attachments, strongly associated with anterior cruciate ligament (ACL) tears. Due to their location, these lesions can be missed arthroscopically so it is essential to diagnose them on preoperative magnetic resonance imaging (MRI).
Purpose: To evaluate the accuracy of MRI in detecting meniscal ramp lesions in patients with ACL tears using arthroscopy as the reference standard.
Approaching ramp lesions from the different world of posterior knee compartment: A review of evidence with a proposal of a new classification and treatment.
J Exp Orthop
October 2024
Bone Joint and Related Tissues Research Center, Akhtar Orthopedic Hospital Shahid Beheshti University of Medical Sciences Tehran Iran.
Unlabelled: Ramp lesions (RLs) are peripheral lesions that occur in the posterior part of the medial meniscus or where it attaches to the joint capsule. The classification of the medial meniscus RLs has been the focus of numerous studies and publications. This review provides an overview of RL's current classification and treatment options in anterior cruciate ligament deficient knees.
View Article and Find Full Text PDFInside-Out Repair of Medial Meniscal Ramp Lesions in Patients Undergoing Anterior Cruciate Ligament Reconstruction.
JBJS Essent Surg Tech
October 2024
Twin Cities Orthopedics, Minneapolis, Minnesota.
Article Synopsis
- Medial meniscal ramp lesions occur at the junctions of the medial meniscus and are often found in up to 42% of ACL tears, but commonly go undetected due to limitations in MRI and physical examinations.
- Proper arthroscopic evaluation, including modified techniques, is necessary for effective diagnosis and treatment of these lesions to prevent increased knee instability and potential ACL graft failure.
- The video article outlines a systematic approach to identify and assess ramp lesions, demonstrating an innovative mini-open repair technique during ACL reconstruction surgery.
Arthroscopic Centralization of the Medial Meniscus Reduces Load on a Posterior Root Repair Under Dynamic Varus Loading: A Biomechanical Investigation.
Am J Sports Med
October 2024
Department of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany.
Background: In addition to the integrity of the meniscal hoop function, both the anterior and posterior meniscus roots as well as the meniscotibial and meniscofemoral ligaments are crucial in restraining meniscal extrusion. However, the interaction and load sharing between the roots and these peripheral attachments (PAs) are not known.
Purposes: To investigate the influence of an insufficiency of the PAs on the forces acting on a posterior medial meniscus root repair (PMMRR) in both neutral and varus alignment and to explore whether meniscal centralization reduces these forces.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!