Intra-articular Hyaluronan Substitution in Arthroscopy of the Wrist

Inclusion Criteria: * Male and female patients between 18 and 80 years of age * Minimum pain score of 2 according to modified Mayo Wrist Score * Patients in good general health/nutritional condition * Signed written informed consent Exclusion Criteria: * Alcohol / drug abuse, drug addiction or neurotic personality disorder; patients with mental illness or suicidal tendency * Severe intercurrent illness (like uncontrolled diabetes mellitus or thyroid disease, carcinoma,...) * Fertile women without medically secured contraception(hysterectomy, sterilization, contraceptives,...) * Subjects having a high probability of non compliance to the study procedures according to investigator's judgement (like illiteracy, insufficient German linguistic knowledge) * Contraindication for the use of one of the investigational products or for the scheduled anesthesia * Concomitant or previous participation in a clinical trial within the last 3 months * Intraarticular treatment with a sodium hyaluronate-based product within the last 6 months * Intraarticular treatment by the use of corticoid containing substance within the last 3 months * Concomitant illness or injury influencing study evaluation