The invention describes a method for identifying alterations in a musculoskeletal system of a subject, wherein the method comprises the steps of associating, with the subject, detecting means capable of detecting physical quantities representative of a state of the subject, detecting the physical quantities through the detecting means, identifying a biomechanical model for the subject, determining combined movements of muscles and bones as a function of said physical quantities detected and of said identified biomechanical model, converting the combined movements into a plurality of movement steps of segments and joints, computing parameters representative of the alterations, comparing the parameters computed with predefined reference values representative of alteration thresholds in the musculoskeletal system, identifying the alterations as a function of a failed matching between the computed parameters and the predefined reference values, and determining the belonging of this correspondence to one or more groups of musculoskeletal pathologies as a function of said identified alteration.The invention further comprises a system for identifying alterations in a musculoskeletal system of a subject.