Mild to moderate OA of the knee (Kellgren 1, 2 and 3)
Conditions
Interventions
Eligible patients giving written informed consent will be randomized to receive 3 injections of either the investigational device (Fermathron plus) or the placebo-control device (phosphate-buffered sa
Sponsors
Maatschap orthopedie St. Annaziekenhuis
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients who are legally competent and able to understand the nature, scope and aim of the clinical investigation and have given written informed consent to participate; 2. Patients of either sex and of all races who have been diagnosed as having osteoarthritis of the knee according to the American College of Rheumatology diagnostic criteria for OA (Attachment 1); 3. Patients may have osteoarthritis in one or both knees. For patients with bilateral OA, the more severely affected knee will be included in the study. If both knees are similarly affected (defined as ¡Ü 25mm difference between left and right side on VAS score for pain after the 50 meter walk test), the patient will be excluded; 4. Patients with OA of the knee which has been radiographicly confirmed, within the previous 12 months, as being of Grade I, II or III according to the Kellgren-Lawrence Classification (Attachment 2); 5. Patients having pain in the knee with a baseline score of 15 mm or more on a 100 mm visual analogue scale for the 50 meter walk test; 6. Patients for whom, in the view of the investigator, it is clinically acceptable to withdraw all NSAIDs and analgesics and rely on acetaminophen as the only escape medication for the duration of the study; 7. Patients who are able and willing to return for follow-up evaluations; 8. Patients with bilateral OA with ¡Ý 25mm difference in VAS score between right and left knee, who agree that the other knee will not be treated during the course of this study.
Exclusion criteria
Exclusion criteria: 1. Patients with osteoarthritis in one or both knees which has been radiographicly confirmed, within the previous 12 months, as being of grade IV according to the Kellgren-Lawrence Classification (Attachment 2); 2. Patients with associated osteoarthritis of either hip or any other condition that might interfere with the assessment of effectiveness; 3. Patients with psychosomatic complaints defined as a VAS-score for pain after the 50 meter walk test of ¡Ý 90mm; 4. Patients with rheumatoid arthritis or other inflammatory arthritis as defined by the American College of Rheumatology diagnostic criteria for RA (Attachment 3); 5. Patients with a known hypersensitivity to sodium hyaluronate or acetaminophen; 6. Patients unwilling to stop all nonsteroidal, anti-inflammatory drugs (NSAIDs) and osteoarthritis analgesics, and rely on escape medication only for 7 days prior to the first injection and for the duration of the study; 7. Patients receiving regular analgesics/anti-inflammatory therapy, including acetaminophen, for reasons other than painful osteoarthritis of the knee. (Exception: Patients receiving low-dose acetylsalicylic acid, up to 325 mg daily, as prophylaxis for cardiovascular disease are eligible for inclusion in this study); 8. Patients who have had prior hyaluronic acid injections in any joint; 9. Patients who have had intra-articular injections of any type in the preceding three months; 10. Patients treated with arthroscopy within the previous three months; 11. Patients who have received any experimental drug or device within the previous three months; 12. Patients in whom the intra-articular route is contra-indicated; 13. Patients with an active or suspected infection in or around the knee; 14. Patients diagnosed with any of the following: A. Arthritis of metabolic origins; B. Chondromalacia; C. Chronic active fibromyalgia; D. Gout; E. Osteonecrosis of either knee; F. Knee instability; G. Vascular insufficiency; H. Severe renal or hepatic impairment. 15. Patients with other disease processes that require corticosteroid therapy; 16. Patients who are known alcohol or drug abusers; 17. Patients who are pregnant or lactating.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Efficacy endpoints: Pain Pain is measured using a VAS score. The investigator will ask the patient to walk 50 meters and asks for the pain. Also, the investigator will ask for the pain at rest and have the patient mark this score using VAS measurement. Successful treatment is defined as a reduction in pain of ¡Ý 25% in using the VAS score following a 50 meter walk test compared to baseline score at Visit 2. Patients, who have this amount of pain reduction or more, are classified as responders. Efficacy endpoints: Function Function is measured using the C subscale of the WOMAC questionnaire. Successful treatment is defined as an improvement in function of ¡Ý 25% in using the C subscale of the WOMAC questionnaire compared to baseline score (Visit 2). Efficacy endpoints: Safety Safety is measured with recording of AE¡¯s during the study. All adverse events will be recorded. Evaluator will identify if the condition is device-related and if device related, determine the level of severity ("mild", "moderate", and "severe"). Comparison between treatment groups on all adverse events, device-related adverse events, and their severity will be conducted. | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. WOMAC A subscale for pain; 2. WOMAC B subscale for joint stiffness; 3. Patient satisfaction with treatment result; 4. Use of escape medication; 5. Changes in limitations in sports and work. | — |
Contacts
Public ContactW. Weegen, van der
St. Anna Zorggroep, P.O. Box 90
Outcome results
None listed