The main objective of the present study is the evaluation of the kinematic parameters of gait and distribution of the load, recorded thruogh a sensorized treadmill, on lower limbs in patients at 1 year from Total Hip Replacement or Total Knee Replacement.

The secondary objective is to evaluate the effects of gait training with biofeedback by means of a sensorized treadmill in patients with asymmetry of the kinematic parameters of the step and of distribution of the load on the lower limbs.

Inclusion Criteria:

• Mini Mental State Examination ≥ 24
• 12 months after total hip or total knee replacement

Exclusion Criteria:

• impossibility to perform a walking test
• disabling cardiovascular and osteo-arthro-muscular problems that can impair walking tests
• central or peripheral neurological disorders that compromise the sensory-motor skills of the patient under examination and / or the degree of collaboration
• patients who have not signed informed consent