Rotator Cuff Deficient Arthritis of the Glenohumeral Joint

Rotator cuff deficient arthritis of the glenohumeral joint, especially cuff tear arthropathy, has proved a challenging clinical entity for orthopaedic surgeons ever since Charles Neer originally detailed the problem in 1983. Understanding has improved regarding the pathophysiology and pathomechanics underlying cuff tear arthropathy. Surgical reconstruction options can lead to excellent outcomes for patients afflicted with these painful and functionally limited shoulders. Humeral hemiarthroplasty and reverse total shoulder arthroplasty have jumped to the forefront in the treatment of cuff tear arthropathy. As studies continue to look at the results of these procedures in cuff tear arthropathy, existing indications and treatment algorithms will be further refined. In this article the history and pathophysiology of cuff tear arthropathy are reviewed. Additionally, the clinical findings and results of surgical reconstruction are discussed.

Gene Expression Profile Analysis by cDNA Array in the Subacromial Bursa of Patients with Rotator Cuff Disease / 대한정형외과학회잡지

PURPOSE: To examine the expression pattern of inflammatory cytokines/receptors in the subacromial bursa of patients with rotator cuff disease using a cDNA(Complement DNA) Array technique. MATERIALS AND METHODS: Twenty two human subacromial bursal specimens were obtained intraoperatively from patients during shoulder surgery (18 bursitis, 4 normal bursa). The RNA was isolated from the bursal tissues and the presence of gene expression was analyzed using a cDNA Array technique. The statistical differences between bursitis and the normal bursa specimens were determined using a Mann Whitney U test and Student's t-test. RESULTS: cDNA Array analysis revealed a significant increase in the expression of several cytokine genes and their receptors in patients with subacromial bursitis compared with the controls (p<0.05). These cytokines included the interleukins (IL-1, 6, 12, 13, 15, 16, 17) and their receptors, lymphotoxin, small inducible cytokines, chemokine receptor (CCR 4, 6, 7) and stromal cell derived factor-1 (SDF-1). CONCLUSION: This study demonstrated a significant increase in many inflammatory cytokines in the subacromial bursa of patients with rotator cuff disease. This suggests that there is an active inflammatory reaction at the subacromial bursa in rotator cuff disease.