Gait Analysis in Moderate Hemophiliac Patients (AQM-Hemophile)

The management of moderate hemophilia is less codified than those of severe patients; because these patients are theoretically less likely to bleed and therefore less likely to develop arthropathies. Nowaways, the question arises as to the appropriateness of this "symptomatic" management for the prevention of the occurrence of hemophilic arthropathies. Indeed, a significant number of moderate hemophiliacs seems to develop severe arthropathies that cause significant disability. However, because of the very small proportion of these patients in the total number of hemophiliacs, data are lacking on the impact of arthropathies on this population. The investigators therefore propose to include moderate hemophiliac patients in the study to carry out an evaluation of gait, using a gait analysis to determine the consequences of arthropathies, even sub-clinical ones, according to the duration of the disease's progression. In an associated way, the analysis of different clinical (joint assessment; quality of life score;...), radiological (radiographic; ultrasound (synovial thickness)), biological (level of associated factors ; other associated marker), in order to provide a complete picture of the articular situation in these patients with moderate haemophilia.