Biomechanical study of strength and stiffness of the knee anterolateral ligament

BMC Musculoskeletal Disorders

Research Article

Cesar Augusto Martins Pereira¹  João Stefan Rozas²  Tulio Pereira Cardoso²  João Marcelo Pedroso Wey²  Gilberto Luis Camanho³  José Ricardo Pécora³  Marcelo Batista Bonadio³  Marco Kawamura Demange³  Camilo Partezani Helito⁴ 

[1] Biomechanical Laboratory Division, Department of Orthopaedics and Traumatology, Institute of Orthopedics and Traumatology–Hospital and Clinics, Faculty of Medicine, University of São Paulo (IOT-HCFMUSP), São Paulo, Brazil;Department of Orthopaedic Surgery, Catholic University of São Paulo, Sorocaba, São Paulo, Brazil;Knee Surgery Division, Department of Orthopaedics and Traumatology, Institute of Orthopedics and Traumatology–Hospital and Clinics, Faculty of Medicine, University of São Paulo (IOT-HCFMUSP), São Paulo, Brazil;Knee Surgery Division, Department of Orthopaedics and Traumatology, Institute of Orthopedics and Traumatology–Hospital and Clinics, Faculty of Medicine, University of São Paulo (IOT-HCFMUSP), São Paulo, Brazil;Rua Dr. Ovídio Pires de Campos, 333, CEP: 05403-010, Cerqueira Cesar, São Paulo SP, Brazil;

关键词: Knee;    Anterolateral ligament;    Biomechanics;    Anatomy;   

DOI  :  10.1186/s12891-016-1052-5

 received in 2015-08-17, accepted in 2016-04-26,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundRecent studies clearly characterize the anatomical parameters of the knee anterolateral ligament (ALL). The potential clinical importance of this ligament is exemplified by some patients with possible combined Anterior Cruciate Ligament (ACL) and ALL rupture who do not progress satisfactorily following isolated ACL reconstruction. Previous biomechanical studies have assessed the resistance parameters of the ALL in order to address potential reconstruction strategies; however, these have reported conflicting results. Thus, this study aimed to evaluate the linear resistance of the ALL by means of a biomechanical study in cadaveric knees.MethodsFourteen cadaveric knees were used. The ALL was dissected, and all structures that connect the femur and the tibia, except for the ALL, were sectioned. The ALL was subjected to a tensile test with the knee around 30 to 40 degrees, in a way that the ALL was aligned with the machine. The strength at the maximum resistance limit, deformation and stiffness of the ALL were evaluated.ResultsThe mean maximum strength of the ALL was 204.8 +/- 114.9 N. The stiffness was 41.9 +/- 25.7 N/mm and the deformation 10.3 +/- 3.5 mm.ConclusionThe ALL has a mean ultimate tensile strength of 204.8 N. This suggests that simple bands of all autologous or homologous grafts commonly used in clinical practice for ligament reconstruction around the knee possess the required biomechanical resistance characteristics for ALL reconstruction.

【 授权许可】

CC BY   
© Helito et al. 2016