Methods of regional anaesthesia and regional postoperative analgesia are common in perioperative management of patients in traumatology-orthopaedics. One of most challenging fields of traumatology-orthopaedics is shoulder surgery. Shoulder surgery is associated with intense and long-lasting postoperative pain. It affects patients’ well-being, limits limb function and worsens results of surgical treatment. Determination of optimal methods for postoperative pain relief is very important in clinical practice. Several modern studies compared methods of systemic analgesia with continuous interscalene infusion of bupivacaine 0,15 - 0,25 % solution. Application of these concentrations of bupivacaine resulted in sufficient analgesia but profound motor blockade and anaesthetic toxicity were observed. There are few studies on interscalene infusions of small concentrations of bupivacaine. Data on effects of small doses of bupivacaine on intensity of motor blockade and adjuvant drugs on postoperative analgesia is lacking. AIM OF THE STUDY: to evaluate the quality of post-operative pain treatment after shoulder surgery using continuous perineural infusions of different concentrations (0.1% and 0.15%) of bupivacaine and bupicacaine (0.1%) in combination with adjuvant clonidine and effects on operated hand motor function. To assess clinical advisability of interscalene brachial plexus identification and catheterization using G. Meier’s technique. 159 patients scheduled for elective... [to full text]