Study to Prevent Cartilage Damage Following Acute Knee Injury.
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Purpose
Individuals who have had a severe knee injury have an increased risk of developing arthritis of the knee and at a much earlier age than would otherwise be expected. The swelling and inflammation that occur after injury are believed to be responsible for this cartilage damage. The cartilage (material that provides a cushion in the knee) is the primary protection from what is called degenerative arthritis or osteoarthritis. We hope to reduce this swelling and prevent the damage to cartilage that occurs after injury by injecting a medication that blocks one of the proteins responsible for inflammation and cartilage breakdown. This protein is called interleukin-1 and can be inhibited by an interleukin-1 receptor antagonist called anakinra. Anakinra will be injected directly into the injured knee and response to the injection will be measured by symptoms and analysis of cartilage breakdown in the knee fluid and blood.
| Condition | Intervention | Phase |
|---|---|---|
|
Knee Injury |
Drug: Anakinra |
Phase 1 Phase 2 |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Parallel Assignment Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor) Primary Purpose: Treatment |
| Official Title: | IL-1ra for Prevention of Chondropathy Following Knee Injury |
- pain [ Time Frame: 4 and 30 days ] [ Designated as safety issue: No ]
- chondropathy score [ Time Frame: 30-60 days ] [ Designated as safety issue: No ]
| Enrollment: | 10 |
| Study Start Date: | March 2006 |
| Study Completion Date: | June 2007 |
| Primary Completion Date: | June 2007 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
|
Experimental: 1
Intra-articular IL-1Ra
|
Drug: Anakinra
150 mg IL1Ra ia x1 vs saline ia x1
Other Name: Kineret
|
|
Placebo Comparator: 2
Intra-articular saline
|
Drug: Anakinra
150 mg IL1Ra ia x1 vs saline ia x1
Other Name: Kineret
|
Detailed Description:
Osteoarthritis is highly prevalent with significant impact on health care utilization and personal suffering. Injury predisposes to OA even after surgical correction (1, 2). Definitive therapy for established OA is lacking and current treatments are increasingly questioned with regard to long-term safety. Interleukin-1 is instrumental in OA pathogenesis (3-5). Recent studies by Chevalier demonstrated that intra-articular use of IL-1ra was safe in patients with established OA (6). We hope to show that IL-1ra will provide symptomatic benefit after knee injury as well as decreasing cartilage breakdown.
The trial will consist of trial administering 150mg of Anakinra, or placebo, within 30 days of an acute knee injury that requires surgical repair. We hypothesize that higher IL-1 in synovial fluid after injury will predict greater symptomatic response to IL-1ra. Outcome measures will be functional and pain assessments at regular intervals before and after surgery (7, 8). Cartilage catabolism will be assessed with two primary measures. First we will assess degree of chondropathy via direct cartilage visualization and scoring at the time of arthroscopic repair (9). Secondly, the impact of IL-1ra on the inflammatory milieu will be determined through analysis of serum and synovial fluid cytokine levels and cartilage biomarkers at enrollment and again at the time of surgical repair.
The impetus for this study is based on previous work done in animal models of OA, showing prevention of cartilage damage following surgically induced ACL injury (10-12). We believe that intra-articular delivery of anakinra within a short time following knee injury will improve patient function and pain reporting and will also prevent chondropathy that results from injury.
Eligibility| Ages Eligible for Study: | 18 Years to 30 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Onset of injury less than 4 weeks prior to evaluation
- Severe knee injury that requires surgery, including anterior cruciate ligament tear, meniscus tear and chondral injury
- BMI less than 30
- Age 18-30
- Women will have serum pregnancy testing (bHCG) at time of entry and on follow-up evaluation and must agree to use an approved form of contraception during the study period.
Exclusion Criteria:
- Prior signal joint injury requiring medical evaluation
- History of arthritis or rheumatic disease
- History of intra-articular corticosteroid in index joint
- Septic joint
- Evidence of chronic joint disease by plain radiograph
- Fracture or multiple ligament tear
- Pregnancy or lactation
- Inability to give informed consent
Contacts and Locations| United States, North Carolina | |
| Duke University Sports Medicine Clinic | |
| Durham, North Carolina, United States, 27710 | |
| Study Chair: | Virginia B Kraus, MD, PhD | Duke University |
More Information
Publications:
Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
| Responsible Party: | Dr. Virginia Byers Kraus, Duke University Medical Center |
| ClinicalTrials.gov Identifier: | NCT00332254 History of Changes |
| Other Study ID Numbers: | 7939-05-11 |
| Study First Received: | May 30, 2006 |
| Last Updated: | January 2, 2008 |
| Health Authority: | United States: Institutional Review Board |
Keywords provided by Duke University:
|
Anterior cruciate ligament tear Meniscus tear Chondral injury |
Additional relevant MeSH terms:
|
Knee Injuries Leg Injuries Wounds and Injuries Interleukin 1 Receptor Antagonist Protein |
Antirheumatic Agents Therapeutic Uses Pharmacologic Actions |
ClinicalTrials.gov processed this record on May 21, 2013