1. A method for identifying and characterizing a problem of a knee joint of a patient, the method comprising: receiving biomechanical data from sensors worn by the patient, the biomechanical data being representative of a movement of the knee joint during complete cycles of the movement of the knee joint; generating, in a processing device, a continuous biomechanical profile based on the biomechanical data, the continuous biomechanical profile comprising a continuous curve representative of the biomechanical data for the knee joint as a function of a percentage of the complete cycles of the movement of the knee joint, the continuous curve being a relation between a set of inputs and a set of outputs, where each input of the set of inputs represents a percentage of completion of the complete cycle of the movement of the knee joint and where each output of the set of outputs represents one of: a degree of extension-flexion of the knee joint of the patient corresponding to the percentage of completion of the complete cycle of the knee joint; a degree of abduction-adduction of the knee joint of the patient corresponding to the percentage of completion of the complete cycle of the knee joint; a degree of internal-external rotation of the knee joint of the patient corresponding to the percentage of completion of the complete cycle of the knee joint; a vertical ground reaction force exerted on the patient corresponding to the percentage of completion of the complete cycle of the knee joint; a medial/lateral ground reaction force exerted on the patient corresponding to the percentage of completion of the complete cycle of the knee joint; and a posterior/anterior ground reaction force exerted on the patient corresponding to the percentage of completion of the complete cycle of the knee joint; in the processing device, classifying the continuous biomechanical profile of the knee joint by considering all the outputs of the continuous curve representative of the biomechanical data in one of multiple classes of knee joint problems by applying a pattern recognition technique on the continuous biomechanical profile and a normative biomechanical profile associated to the one of the multiple classes, each one of the multiple classes corresponding to at least one knee joint problem comprising at least one of an injury, a pathology and a biomechanical deficit; based on the classifying, identifying, in the processing device, the problem as comprising the at least one knee joint problem of the one of the multiple classes; and archiving the problem identified in a storing device in communication with the processing device to make the problem accessible during consultation.