Abstract:
:Postoperative inflammation and stiffness, as well as the struggle to achieve full range of motion (ROM), following knee surgery is a significant clinical challenge. Interleukin-1 is a crucial mediator of the inflammatory response and development of pathological conditions leading to chronic inflammation. We hypothesized that intra-articular injection of intra-articular anakinra, an IL-1 antagonist, would result in sustained improvements of chronic refractory arthrofibrosis and limited arthrofibrosis of the knee joint. We retrospectively reviewed 8 patients who underwent injection of intra-articular anakinra, 200 mg. Four patients (3 women, 1 man) had intra-articular anakinra for treatment of chronic refractory arthrofibrosis, and 4 patients (4 women) had intra-articular anakinra for limited arthrofibrosis. All 4 of the refractory arthrofibrosis patients had failed conservative treatment with intensive physical therapy, corticosteroid injections, and anti-inflammatory medication. Three of the 4 patients had failed a prior manipulation under anesthesia with lysis of adhesions. All 4 reported improvement in ROM (10°-45°) and swelling, with 75% reporting improvement in pain. Seventy-five percent of these patients returned to prior activity level. All 4 of the limited arthrofibrosis also failed similar attempts at conservative treatment, and 2 of the 4 had failed a prior manipulation under anesthesia with lysis of adhesions. After intra-articular anakinra, all 4 reported improvement in ROM (20°-45°) and swelling, with 80% reporting improvement in pain. Seventy-five percent of these patients were able to return to prior activity level. We found intra-articular anakinra to be effective in this small cohort of patients with refractory arthrofibrosis and limited arthrofibrosis.
journal_name
Orthopedicsjournal_title
Orthopedicsauthors
Brown CA,Toth AP,Magnussen Bdoi
10.3928/01477447-20101021-09subject
Has Abstractpub_date
2010-12-01 00:00:00pages
877issue
12eissn
0147-7447issn
1938-2367journal_volume
33pub_type
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