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Clinical Trial Summary

Adhesive capsulitis is a fairly common orthopedic condition that causes pain and loss of range of motion. There are a variety of ways to treat adhesive capsulitis, one of them being an intra-articular steroid injection. This is done to help decrease the inflammatory response caused by adhesive capsulitis. In this study, all participants will receive an intra-articular glenohumeral injection of ZILRETTA and will be followed up with at four time points over 1 year to observe pain, function and range of motion following the injection.


Clinical Trial Description

Adhesive capsulitis is a painful shoulder condition characterized by a gradual loss of both passive and active range of motion due to inflammatory changes and eventual fibrosis and contracture of the shoulder joint capsule. It occurs in about 2% to 5% of the population, and a majority of patients are female. The true cause of the condition remains unclear, however, it has been proposed that the initial synovitis stimulates the development of a fibrotic cascade. The development of adhesive capsulitis has been associated with diabetes mellitus, thyroid dysfunction, Dupuytrens contractures, autoimmune diseases and treatments for certain cancers. Adhesive capsulitis progresses through four predictable phases, defined by symptoms, physical examination, arthroscopic appearance and biopsies. Regardless of stage, the mainstay of treatment for adhesive capsulitis of the shoulder is conservative, focused mainly on physical therapy combined with a home exercise program, regardless of stage. Pharmacologic agents are often used as adjuncts to physical therapy, and include nonsteroidal anti-inflammatory medications (NSAIDs), oral corticosteroids and intra-articular injections of corticosteroids. Although a large percentage of patients in the early stages of disease respond well to conservative treatments, those who fail therapy and injections may require surgical intervention, including arthroscopy with lysis of adhesions and/or manipulation under anesthesia. Numerous studies have investigated the effect and success of injections combined with standard physical therapy for adhesive capsulitis of the shoulder. In general, intra-articular injection of corticosteroids has been found to be superior to administration of oral cortisone and at least equivalent to manipulation under anesthesia alone. Injections have been shown to reduce pain quicker and result in earlier return of range of motion. Low doses of steroid appear equally as effective as higher doses. Image-guided injections, whether ultrasound or fluoroscopic guided injections, have also been shown to be more effective than blinded injections. Failure of an injection and therapy to provide relief either results in a repeat image-guided injection or surgical intervention, both of which have significant associated cost and potential morbidity. Thus, there would be significant potential value to a long-acting, sustained release intra-articular steroid injection for the treatment of adhesive capsulitis of the shoulder. Zilretta®, triamcinolone acetonide extended release suspension 32 mg, is a microsphere formulation of injectable steroid which is FDA-approved for and has shown significant promise for the treatment of knee osteoarthritis. This long-acting steroid could have several important advantages in the treatment of shoulder adhesive capsulitis. It may potentiate and prolong the anti-inflammatory effect of the steroid, and potentially avoid the need for costly additional image-guided injections or expensive and potentially morbid surgery. An additional potential benefit is less elevation of peripheral blood glucose in diabetics, a known complication of traditional steroid injections that has been demonstrated to be mitigated using a sustained release formulation. Out primary aim in this study is to assess patient reported pain and outcomes in patients with idiopathic adhesive capsulitis of the shoulder at 3, 6 and 12 months following single, image guided ZILRETTA injection. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04831255
Study type Interventional
Source University of Virginia
Contact Kaitlyn Shank, MEd, ATC
Phone 434-243-5653
Email kshank@virginia.edu
Status Recruiting
Phase Phase 1
Start date June 21, 2019
Completion date December 31, 2023

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