tailieunhanh - báo cáo hóa học:" Function of anterior talofibular and calcaneofibular ligaments during in-vivo motion of the ankle joint complex"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Function of anterior talofibular and calcaneofibular ligaments during in-vivo motion of the ankle joint complex | Journal of Orthopaedic Surgery and Research BioMed Central Open Access Research article Function of anterior talofibular and calcaneofibular ligaments during in-vivo motion of the ankle joint complex Richard J de Asia Michal Kozanek Lu Wan Harry E Rubash and Guoan Li Address The Bioengineering Laboratory Department of Orthopaedic Surgery Massachusetts General Hospital and Harvard Medical School 55 Fruit Street - GRJ 1215 Boston MA 02114 USA Email Richard J de Asla - rdeasla@ Michal Kozanek - mkozanek@ Lu Wan - lwan@ Harry E Rubash - hrubash@ Guoan Li - gli1@ Corresponding author Published 16 March 2009 Received 3 July 2008 Journal of Orthopaedic Surgery and Research 2009 4 7 doi 1749-799X-4-7 Accepted 16 March 2009 This article is available from http content 4 1 7 2009 de Asla et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Despite the numerous in-vitro studies on the mechanical properties and simulated injury mechanisms of the anterior talofibular ligament ATFL and calcaneofibular ligament CFL the in-vivo biomechanical behavior of these two ligaments has not yet been described. Methods Apparent length of the ATFL and CFL was measured in four ankles in healthy male subjects between 32 and 45 years of age two left and two right during a dorsiflexionplantarflexion and supination-pronation arc of motion using a combined dual-orthogonal fluoroscopic and magnetic resonance imaging technique. Results The ATFL elongated from the neutral position at - mm to - mm at maximal plantarflexion and shortened significantly from the neutral position to - mm at maximal dorsiflexion p . The CFL .

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