title: An original clinical methodology for non-invasive assessment of pivot-shift test.
abstract: Even if pivot-shift (PS) test has been clinically used to specifically detect anterior cruciate ligament (ACL) injury, the main problem in using this combined test has been yet associated with the difficulty of clearly quantifying its outcome. The goal of this study was to describe an original non-invasive methodology used to quantify PS test, highlighting its possible clinical reliability. The method was validated on 66 consecutive unilateral ACL-injured patients. A commercial triaxial accelerometer was non-invasively mounted on patient's tibia, the corresponding 3D acceleration was acquired during PS test execution and a set of specific parameters were automatically identified on the signal to quantify the test. PS test was repeated three times on both injured and controlateral limbs. Reliability of the method was found to be good (mean intra-rater intraclass correlation coefficient was 0.79); moreover, we found that ACL-deficient knees presented statistically higher values for the identified parameters--than the controlateral healthy limbs, averagely reporting also large effect size.
authors: Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy. n.lopomo@biomec.ior.it
authors: Nicola
authors: N
authors: Lopomo
authors: Stefano
authors: S
authors: Zaffagnini
authors: Cecilia
authors: C
authors: Signorelli
authors: Simone
authors: S
authors: Bignozzi
authors: Giovanni
authors: G
authors: Giordano
authors: Giulio Maria
authors: GM
authors: Marcheggiani Muccioli
authors: Andrea
authors: A
authors: Visani
mesh_terms: D061725:Accelerometry / Q000706:statistics & numerical data; D016118:Anterior Cruciate Ligament / Q000503:physiopathology; D000070598:Anterior Cruciate Ligament Injuries; D001696:Biomechanical Phenomena / Q000502:physiology; D003198:Computer Simulation; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000503:physiopathology; D007719:Knee Joint / Q000502:physiology*; D008954:Models, Biological; D016059:Range of Motion, Articular / Q000502:physiology