WHAT RESULTS IN TENDON AND MUSCLE TISSUES OF THE ROTATOR CUFF FROM FULL-THICKNESS TEARS: DATA OF MRI, ARTHROSCOPY AND HISTOLOGY

Full-thickness rotator cuff tears - is abundant injury which leads to the expressed pain syndrome and functional violation of the top extremity. At making decision about necessary of surgery, MRI is the important source of information about the injury. The purpose: to determine the qualitative and quantitative indicators of degenerative-dystrophic changes in muscular and tendinous parts of the rotator cuff. based on a combined MRI, arthroscopic and histological diagnostics of full-thickness rupture of shoulder cuff Methods: We have examined 28 patients with full-thickness rotator cuff tears. MRI of damaged joint to all patients before an operation was performed. Thereafter an arthroscopy was performed and intraoperative biopsy of the muscular and tendinous parts of the rotator cuff, with following histological examination. Results: It was found that at small full-thickness rotator cuff tears the intensity of degenerative changes in muscular and tendinous tissue was lower, so these tears are the most promising for all kinds of treatment. At medium and big tears intensity of degenerative changes in the tissues begins to prevail over productive inflammation and it limits to the ability of conservative treatment and increases the risk of unsuccessful outcomes of arthroscopic reconstruction. Conclusions: In this regard, it is necessary to search biological decisions, which complement the stage of arthroscopic reconstruction of the rotator cuff.