PURPOSE: This study investigated the effect of damage of the posterior and anterior horns of the medial meniscus on knee stability. METHODS: Twenty fresh-frozen porcine knees were divided into two groups (anterior horn and posterior horn injury). Each group was tested in three states: intact medial meniscus, posterior or anterior horn of medial meniscus resection and total medial meniscectomy. A robotic testing system was used to test anterior tibial translation (ATT) at 30° (full extension), 60° and 90° of knee flexion with an external anterior tibial load of 89 N, internal rotation (IR) and external rotation (ER) at 30° and 60° of knee flexion under a 4 N m tibial rotation torque. RESULTS: In response to an IR torque, there was a significant difference between the state of intact medial meniscus and anterior and posterior horn damage, except for anterior horn resection at 60° of knee flexion. In response to an ER torque, there were no significant differences between the state of intact meniscus and horn damage except for anterior horn resection at 30° of knee flexion. Meniscal damage had no significant effect on ATT. CONCLUSION: The results indicated that the posterior horn was more important in controlling the IR stability than the anterior horn with knee flexion, and the anterior horn was more important in controlling the ER stability than the posterior horn at full knee extension in the anterior cruciate ligament-intact knee. These findings further the understanding of the mechanisms, the prevention of injuries and rehabilitation of meniscal horn injury in clinical practice.
PURPOSE: This study investigated the effect of damage of the posterior and anterior horns of the medial meniscus on knee stability. METHODS: Twenty fresh-frozen porcine knees were divided into two groups (anterior horn and posterior horn injury). Each group was tested in three states: intact medial meniscus, posterior or anterior horn of medial meniscus resection and total medial meniscectomy. A robotic testing system was used to test anterior tibial translation (ATT) at 30° (full extension), 60° and 90° of knee flexion with an external anterior tibial load of 89 N, internal rotation (IR) and external rotation (ER) at 30° and 60° of knee flexion under a 4 N m tibial rotation torque. RESULTS: In response to an IR torque, there was a significant difference between the state of intact medial meniscus and anterior and posterior horn damage, except for anterior horn resection at 60° of knee flexion. In response to an ER torque, there were no significant differences between the state of intact meniscus and horn damage except for anterior horn resection at 30° of knee flexion. Meniscal damage had no significant effect on ATT. CONCLUSION: The results indicated that the posterior horn was more important in controlling the IR stability than the anterior horn with knee flexion, and the anterior horn was more important in controlling the ER stability than the posterior horn at full knee extension in the anterior cruciate ligament-intact knee. These findings further the understanding of the mechanisms, the prevention of injuries and rehabilitation of meniscal horn injury in clinical practice.
Authors: Jong Keun Seon; Hemanth R Gadikota; Michal Kozanek; Luke S Oh; Thomas J Gill; Guoan Li Journal: Arthroscopy Date: 2008-11-01 Impact factor: 4.772
Authors: M-J Berthiaume; J-P Raynauld; J Martel-Pelletier; F Labonté; G Beaudoin; D A Bloch; D Choquette; B Haraoui; R D Altman; M Hochberg; J M Meyer; G A Cline; J-P Pelletier Journal: Ann Rheum Dis Date: 2004-09-16 Impact factor: 19.103
Authors: Thomas Luyckx; Hilde Vandenneucker; Lennart Scheys Ing; Evie Vereecke; Arnout Victor Ing; Jan Victor Journal: Clin Orthop Relat Res Date: 2018-03 Impact factor: 4.176
Authors: S Zaffagnini; C Signorelli; T Bonanzinga; A Grassi; H Galán; I Akkawi; L Bragonzoni; F Cataldi; M Marcacci Journal: Knee Surg Sports Traumatol Arthrosc Date: 2016-07-01 Impact factor: 4.342