EFFECTIVENESS OF ORTHOSIS FOR RHIZARTHROSIS STUDY I: ORTHOSIS FOR RHIZARTHROSIS: A SYSTEMATIC REVIEW. STUDY II: COMPARISON OF EFFECTIVENESS BETWEEN FUNCTIONAL AND NIGHTTIME ORTHOSIS USE FOR RHIZARTHROSIS: RANDOMIZED, CONTROLLED, BLINDED, CLINICAL TRIAL.

Abstract

Rhizarthrosis is a degenerative joint process that affects the trapeziometacarpal joint, impairing the lateral pinching, opposition and retroposition of the thumb. Pain is the main symptom and leads to difficulties related to hand function and quality of life. Orthosis have been used in osteoarthritis of the trapeziometacarpal joint to diminish pain and the inflammatory process as well as to prevent or correct subluxation and thumb deformity . The proposed project will be carried out in two steps: Study I and Study II. Study I will be a systematic review and possible meta-analysis to determine the efficacy and safety of the use of an orthosis for rhizarthrosis. The review will be carried out in accordance with the Cochrane method and will be conducted at the Rheumatology Sector of the Federal University of São Paulo (Brazil). The aim of Study II will be to compare the effectiveness of a functional daytime orthosis and nighttime orthosis with regard to improvements in pain and function among patients with rhizarthrosis. For such, a randomized, controlled, blinded, clinical trial will be carried out involving 60 patients with a diagnosis of osteoarthritis in the trapeziometacarpal joint based on the classification criteria of the American College of Rheumatology.