Evaluation of Mobility in Subjects With Severe Knee Osteoarthritis Who Are to Undergo Total Knee Replacement

"the procedure will include:~* 7 to 8 sensors (Foot, leg, thigh, pelvis and chest possibly).~* 5 movements/exercises for the patients, each exercise performed 3 times except walking~* Analysis of 20m walking cycle (normal speed, most natural arm movement, 4 return trips of 20m):~* Climbing up and down stairs (using the public stairs of the rheumatology access department, 6 steps of 20 cm height, at normal speed, without using the handrail)~* Getting up from a chair without the help of hands (start standing, then the patient sits, leans and stands up, feet together, without taking the feet off the floor, using one and the same chair for each patient with a height of 50 cm)"