The study consists to evaluate the impact of prosthetic surgery (PTH and RTH) on kinematic and dynamic parameters (joint torques) of the lower limbs during gait initiation in patients with primary coxarthrosis.
Patients included in the study will undergo a three-dimensional gait analysis. Dynamic gait analysis is multidimensional, measuring kinematic parameters (joint amplitudes: ankles, knees, hips, etc.) and dynamic parameters (assessment of joint torque from ankle, knee, hip to lower limb during gait initiation).
Men or women aged 18 and over
With primary coxarthrosis (any stage)
Consulting in the orthopedic departments of participating centers in anticipation of hip surgery (PTH/RTH), or for advice only.
Written consent signed by the patient
Pregnant or breast-feeding
Adults under guardianship, curatorship or safeguard of justice
Cognitive impairment making it impossible to understand the protocol
Approach other than Moore posterolateral (for PTH and RTH groups)
Parallel
Patients with primary coxarthrosis (any stage).
Other interventionPatients who do not undergo surgery will be called specifically for the study to attend a consultation dedicated to gait assessment.
Patients with primary coxarthrosis (any stage) and operated with Total Hip Prosthesis (THP).
Other interventionPatients scheduled for THP (Total Hip Prosthesis) will be seen at the consultation the day before surgery, in the same hospital as the THP, or at an existing dedicated consultation scheduled for all THP patients. During these scheduled visits, they will be received in the gait analysis laboratory for a gait assessment (V1). Patients will be seen again at 6 months post-operatively for a second gait assessment (V2).
Patients with primary coxarthrosis (any stage) and operated with RTH (Hip resurfacing).
Other interventionPatients scheduled for RTH (Hip Resurfacing) will be seen at the consultation the day before surgery, in the same hospital as the RTH, or at an existing dedicated consultation scheduled for all RTH patients. During these scheduled visits, they will be received in the gait analysis laboratory for a gait assessment (V1). Patients will be seen again at 6 months post-operatively for a second gait assessment (V2).
Amplitude degree of lower limbs articulations
Dynamics of limbs joint torques during walking initiation measured in Nm/kg
Step length during gait initiation
Step width during gait initiation
Duration of first step during gait initiation
Duration of anticipatory postural adjustment phase during gait initiation
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