Analysis of Articular Biomarkers From Osteoarthritic Thumb Basal Joints

Patients scheduled for trapeziectomy due to thumb basal joint osteoarthritis are invited to participate. Synovial fluid is aspirated before the joint is opened. Bone and cartilage are collected. Blood samples are obtained preop. Patients are measured with grip strength, pinch strength, range of thumb motion, body mass index, central obesity and blood pressure.