Background. The main physical sequela of patients with hemophilia is the development of a progressive, degenerative intra-articular lesion, known as hemophilic arthropathy). This sequela is manifested by chronic pain, limited range of motion, axial abnormalities, and periarticular muscle atrophy. Objective. To assess the safety and effectiveness of an intervention through blood flow restriction, regarding the frequency of bleeding and the improvement in the perception of muscle activation and strength, functionality, joint pain, joint status and the perception of quality of life in patients with hemophilic arthropathy. knee and ankle. Study design. Randomized, multicenter, single-blind clinical study. Method. 20patients with hemophilia A and B will be recruited in this study. Patients will be recruited in 3 regions of Spain. The dependent variables will be: bleeding frequency (self-registration), pain (measured with the visual analog scale), joint status (Hemophilia Joint Health Score scale), strength (dynamometer) and range of motion (goniometer). Three evaluations will be carried out: pre-treatment, post-treatment and after a follow-up period of 4 weeks. Expected results. Observe the safety of blood flow restriction in hemophilia patients. To analyze the efficacy of blood flow restriction in improving muscle strength, joint pain, range of motion, and joint damage in patients with hemophilic knee and ankle arthropathy.
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Change from baseline hemarthrosis after treatment and at four weeks.
Timeframe: Screening visit, within the first seven days after treatment and after four weeks follow-up visit