Chondroitin Sulphate Treatment Efficacy in Rhizarthrosis.

Chondroitin Sulphate Treatment Efficacy in Rhizarthrosis. Measurement With Sensory and Quantitive Functional Tests and Concordance Analysis With Subjective Scales of Pain.

Patients who present rhizarthrosis diagnostic will be randomized to be treated with chondroitin sulfate or placebo during 24 weeks to study the effect of the treatment with objective and subjective indicators of pain and sensibility.

Inclusion Criteria:

• both sex patients
• age between 45 to 75 years
• with mechanical pain at the trapezium-thumb metacarpal joint of more than 3 months duration
• grade II or III Eaton & Glickel rhizarthrosis radiological diagnose
• pain at inclusion of >= 40 mm at a visual analogue scale
• without rehabilitation treatment or infiltration in the last 6 months
• who accept to participate and sign informed consent

Exclusion Criteria:

• patients with rhizarthrosis resulted from rheumatic disease
• patients with joint surgery or traumatic background
• illiterate patients or unable to understand informed consent
• patients with previous neuropsychopathology enough severe to unable participation at the study
• patients with peripheral sensory impairment due to diabetes, peripheral neuropathy or central neurological sequelae of disease in the affected limb that can alter sensory perception
• patients with coagulopathy
• inflammation for other process at the joint at study
• in treatment with non-steroidal anti-inflammatory drug in the last 7 days and/or corticosteroid in the last 30 days
• allergy or hypersensibility at chondroitin sulfate or its excipients
• pregnant or breastfeeding woman