title: In vivo relationship between pelvis motion and deep fascia displacement of the medial gastrocnemius: anatomical and functional implications.
abstract: Different authors have modelled myofascial tissue connectivity over a distance using cadaveric models, but in vivo models are scarce. The aim of this study was to evaluate the relationship between pelvic motion and deep fascia displacement in the medial gastrocnemius (MG). Deep fascia displacement of the MG was evaluated through automatic tracking with an ultrasound. Angular variation of the pelvis was determined by 2D kinematic analysis. The average maximum fascia displacement and pelvic motion were 1.501 ± 0.78 mm and 6.55 ± 2.47 °, respectively. The result of a simple linear regression between fascia displacement and pelvic motion for three task executions by 17 individuals was r = 0.791 (P < 0.001). Moreover, hamstring flexibility was related to a lower anterior tilt of the pelvis (r = 0.544, P < 0.024) and a lower deep fascia displacement of the MG (r = 0.449, P < 0.042). These results support the concept of myofascial tissue connectivity over a distance in an in vivo model, reinforce the functional concept of force transmission through synergistic muscle groups, and grant new perspectives for the role of fasciae in restricting movement in remote zones.
authors.affiliation: Department of Physical Therapy, Faculty of Medicine, University of Chile, Santiago, Chile.|Laboratory of Biomechanics, San José Hospital, Santiago, Chile.
authors.forename: Carlos
authors.initials: C
authors.lastname: Cruz-Montecinos
authors.affiliation: Laboratory of Biomechanics, San José Hospital, Santiago, Chile.
authors.forename: Alberto
authors.initials: A
authors.lastname: González Blanche
authors.affiliation: Chiropractic Programme, Health Faculty, Central University, Santiago, Chile.
authors.forename: David
authors.initials: D
authors.lastname: López Sánchez
authors.affiliation: SCIAN-Lab, Programme of Anatomy and Developmental Biology, Faculty of Medicine, ICBM, University of Chile, Santiago, Chile.
authors.forename: Mauricio
authors.identifier: http://orcid.org/0000-0003-3447-1815
authors.initials: M
authors.lastname: Cerda
authors.affiliation: Departamento de Ciencias Morfológicas, Facultad de Ciencia, Universidad San Sebastián, Santiago, Chile.
authors.forename: Rodolfo
authors.initials: R
authors.lastname: Sanzana-Cuche
authors.affiliation: Departamento de Fisioterapia, Andalucía Tech, Cátedra de Fisioterapia y Discapacidad, Instituto de Investigacion Biomedica de Malaga (IBIMA), Clinemtria (F-14), Universidad de Malaga, Málaga, Spain.|School of Clinical Science, Faculty of Health at Queensland University Technology, Brisbane, Qld, Australia.
authors.forename: Antonio
authors.initials: A
authors.lastname: Cuesta-Vargas
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D004548:Elasticity / Q000502:physiology; D005205:Fascia / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D018482:Muscle, Skeletal / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D010388:Pelvis / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology; D016059:Range of Motion, Articular / Q000502:physiology*; D012044:Regression Analysis; D014463:Ultrasonography; D016474:Weight-Bearing / Q000502:physiology; D055815:Young Adult
keywords: fascia; musculoskeletal; tracking motion; ultrasound