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Morales-Avalos R, Diabb-Zavala JM, Mohamed-Noriega N, Vilchez-Cavazos F, Perelli S, Padilla-Medina JR, Torres-Gaytán AG, Huesca-Pérez HA, Erosa-Villarreal RA, Monllau JC. Effect of Injury to the Lateral Meniscotibial Ligament and Meniscofibular Ligament on Meniscal Extrusion: Biomechanical Evaluation of the Capsulodesis and Centralization Techniques in a Porcine Knee Model. Orthop J Sports Med 2023; 11:23259671231212856. [PMID: 38021298 PMCID: PMC10668570 DOI: 10.1177/23259671231212856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 08/18/2023] [Indexed: 12/01/2023] Open
Abstract
Background Previous biomechanical studies of the meniscotibial ligament have determined that it contributes to meniscal stability. An injury to it can cause the meniscus to extrude, and reconstruction of that ligament significantly reduces extrusion. Purpose To assess the biomechanical effects of sectioning the lateral meniscotibial ligament (LMTL) and the meniscofibular ligament (MFL) with respect to the radial mobility of the lateral meniscus and to evaluate the biomechanical effects of the capsulodesis and centralization techniques. Study Design Controlled laboratory study. Methods The lateral meniscus of 22 porcine knees was evaluated. They were mounted on a testing apparatus to apply muscle and ground-reaction forces. The meniscus was evaluated at 30° and 60° of knee flexion using 2 markers placed on the posterior cruciate ligament and the lateral meniscus after applying an axial compression of 200 N to the knee joint. Measurements were recorded under 5 conditions: intact lateral meniscus, injury of the LMTL, subsequent injury of the MFL, the use of the open capsulodesis technique, and the reconstruction of the LMTL and the MFL with the centralization technique. Results The distance between the 2 markers was significantly greater in the extrusion group (combined lesion of the LMTL and MFL) than in the intact or reconstruction groups (capsulodesis and centralization techniques; P < .001 in all cases). In the cases of load application, no significant differences were observed between the control group (intact meniscus) and the groups on which the reconstruction techniques were performed. There were also no differences when comparing the results obtained between both reconstruction techniques. In all settings, the distance between the 2 markers increased with the increase in the knee flexion angle. Conclusion In a porcine model, the LMTL and the MFL participated as restrictors of the radial mobility of the lateral meniscus during loading. Their injury caused a significant increase in lateral meniscal extrusion, and the centralization and the capsulodesis procedures were able to reduce extrusion. Clinical Relevance This study demonstrates the capacity of the LMTL and the MFL to restrict the radial mobility of the lateral meniscus during loading and how it is affected when they are injured.
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Affiliation(s)
- Rodolfo Morales-Avalos
- Laboratory of Biomechanics, Articular Physiology and Experimental Orthopedic Surgery; Department of Physiology, Faculty of Medicine, Universidad Autonoma de Nuevo Leon (UANL), Monterrey, Nuevo Leon, Mexico
- Departamento de Cirugia, Facultad de Medicina, Universitat Autonoma de Barcelona (UAB), Barcelona, Spain
| | - José Manuel Diabb-Zavala
- Facultad de Ingeniería Mecánica y Eléctrica (FIME), Universidad Autónoma de Nuevo León (UANL), San Nicolás de los Garza, Nuevo León, Mexico
| | - Nasser Mohamed-Noriega
- Facultad de Ingeniería Mecánica y Eléctrica (FIME), Universidad Autónoma de Nuevo León (UANL), San Nicolás de los Garza, Nuevo León, Mexico
| | - Félix Vilchez-Cavazos
- Department of Orthopedic Surgery and Traumatology, University Hospital “Dr. José Eleuterio González,” Universidad Autonoma de Nuevo León (UANL), Monterrey, Nuevo León, México
| | - Simone Perelli
- ICATKnee (ICATME), Hospital Universitari Dexeus, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
- Department of Orthopedic Surgery and Traumatology, Hospital del Mar, Universitat Autonoma de Barcelona (UAB), Barcelona, Spain
| | - José Ramón Padilla-Medina
- Department of Orthopedic Surgery and Traumatology, University Hospital “Dr. José Eleuterio González,” Universidad Autonoma de Nuevo León (UANL), Monterrey, Nuevo León, México
| | - Adrián Gerardo Torres-Gaytán
- Department of Orthopedic Surgery and Traumatology, University Hospital “Dr. José Eleuterio González,” Universidad Autonoma de Nuevo León (UANL), Monterrey, Nuevo León, México
| | - Héctor Adán Huesca-Pérez
- Department of Orthopedic Surgery and Traumatology, University Hospital “Dr. José Eleuterio González,” Universidad Autonoma de Nuevo León (UANL), Monterrey, Nuevo León, México
| | - Roger Armando Erosa-Villarreal
- Department of Orthopedic Surgery and Traumatology, University Hospital “Dr. José Eleuterio González,” Universidad Autonoma de Nuevo León (UANL), Monterrey, Nuevo León, México
| | - Joan Carles Monllau
- Departamento de Cirugia, Facultad de Medicina, Universitat Autonoma de Barcelona (UAB), Barcelona, Spain
- Department of Orthopedic Surgery and Traumatology, Hospital del Mar, Universitat Autonoma de Barcelona (UAB), Barcelona, Spain
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Intrameniscal degeneration and meniscotibial ligament loosening are associated factors with meniscal extrusion of symptomatic discoid lateral meniscus. Knee Surg Sports Traumatol Arthrosc 2022; 31:2358-2365. [PMID: 36112159 DOI: 10.1007/s00167-022-07161-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/06/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE This study aimed to compare the amount of extrusion of the discoid lateral meniscus (DLM), which was symptomatic and required surgery, with normal meniscuses and asymptomatic DLMs and examine factors associated with the extrusion of symptomatic DLM. METHODS Medical records of participants with DLM or normal lateral meniscus (LM) were retrospectively reviewed using magnetic resonance imaging (MRI). DLM cases were divided into symptomatic and asymptomatic groups. The midbody meniscal extrusion was measured using mid-coronal MRI. The association between meniscal extrusion and MRI findings, including the meniscofemoral ligament, meniscotibial ligament (MTL), intrameniscal signal intensity of the peripheral rim, meniscal shift, and skeletal maturity, was evaluated. RESULTS Eighty-six knees with DLM (63 symptomatic) were included. The control group included 31 patients. The symptomatic group showed significantly greater meniscal extrusion (mean ± standard deviation symptomatic DLM: 1.0 ± 1.1 mm, asymptomatic DLM: 0.1 ± 0.4 mm, and normal LM: 0.3 ± 0.6 mm, P < 0.001) and had a significantly higher incidence of MTL loosening (P = 0.02) and intrameniscal signal (P < 0.001) than the other two groups. In the symptomatic group, multivariable linear regression analysis showed that MTL loosening [β = 1.45, 95% confidence interval (CI) 1.03-1.86, P < 0.001] and intrameniscal signal (β = 0.49, 95% CI 0.09-0.90, P = 0.002) were independent associated factors. CONCLUSIONS LM extrusion was significantly more common in patients with symptomatic DLM than in those with asymptomatic DLM or a normal LM. MTL loosening and intrameniscal high-signal intensity on MRI were independently associated with meniscal extrusion. These findings help explain the pathogenesis and diagnosis of symptomatic DLM. LEVEL OF EVIDENCE III.
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