Meniscal allograft transplantation is an effective treatment for the symptomatic, young, active patient with meniscal deficiency. Modern graft-preservation techniques may reduce clinical sequelae of meniscal shrinkage after transplantation. We prefer fresh-frozen nonirradiated allografts because of easier processing, lower immunogenicity, and lower cost, and on the basis of a 2-decade clinical experience with fresh-frozen meniscal allograft transplantations, we are pleased with our survivorship results.
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http://dx.doi.org/10.1016/j.arthro.2018.08.008 | DOI Listing |
J Exp Orthop
January 2025
Department of Orthopedics, Senior Department of Orthopedics the Fifth Medical Center of PLA General Hospital Beijing China.
Purpose: This study aimed to compare the effects of four sterilization techniques on meniscal allograft transplantation (MAT) in rabbits.
Methods: In total, 85 medial or lateral meniscuses were obtained from 22 adult New Zealand white rabbits. These 85 meniscal allografts were seeded with () and randomly divided into five groups (= 17): iodine group, Cobalt-60 group, glutaraldehyde group, ethylene oxide group and control group.
Am J Sports Med
January 2025
The Steadman Clinic, Vail, Colorado, USA.
Background: There is growing evidence that medial meniscotibial ligament (MTL) deficiency and medial meniscus extrusion may precede the development of some medial meniscus posterior root (MMPR) tears. However, no study has investigated the biomechanical consequences of MTL deficiency on the MMPR.
Hypothesis: (1) MTL deficiency leads to increased medial meniscus extrusion, (2) increased medial meniscus extrusion is correlated with increased compression and shear forces at the MMPR, and (3) MTL repair restores medial meniscus extrusion and MMPR forces to native levels.
Knee Surg Sports Traumatol Arthrosc
January 2025
Orthopaedic Robotics Laboratory, Departments of Bioengineering and Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Purpose: To quantify the effect of increasing the posterior tibial slope (PTS) on knee kinematics and the resultant medial and lateral meniscal forces.
Methods: In this controlled laboratory study, a 6 degrees of freedom (DOF) robotic testing system was used to apply external loading conditions to seven fresh-frozen human cadaveric knees: (1) 200-N axial compressive load, (2) 5-N m internal tibial +10-N m valgus torque and (3) 5-N m external tibial + 10-N m varus torque. Knee kinematics and the resultant medial and lateral meniscal forces were acquired for two PTS states: (1) native PTS and (2) increased PTS.
Orthop J Sports Med
October 2024
Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakan, Thailand.
Background: Posterior medial meniscus root (PMMR) tears (PMMRTs) can be repaired using various techniques to promote healing. However, the biomechanical properties of suture-relay all-suture anchor (ASA) versus conventional suture anchor (CSA) and loop-locking transtibial pullout (TTP) have not been well established.
Purpose: To compare the biomechanical properties of PMMR repairs using suture-relay ASA, CSA, and loop-locking TTP.
Cartilage
September 2024
Department of Orthopaedic Surgery, Louisiana State University Health Sciences Center Shreveport, Shreveport, LA, USA.
Objective: The purpose of the study was to determine average tensile forces resulting in suture failure while tying a knot during repair of complete radial meniscus tears and to compare the failure tensile force based on meniscus tissue location: the peripheral (red-red) versus inner (white-white).
Design: This study was designed as a cadaveric biomechanical study using 24 menisci harvested from fresh frozen cadaveric knees with midbody radial tears. Tears were repaired using 2-0 nonabsorbable suture in both the inner meniscus and the peripheral meniscus.
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