Method: One hundred and forty patients were randomized into two groups: 70 patients received spinal block with bupivacaine 12 mg (bupivacaine plain) and 20 mcg fentanyl in a sitting position, 70 patients received femoral - sciatic nerve block with the 20 ml of 0.5% bupivacaine and adrenaline 1/400.000 for the sciatic nerve and 15 ml for femoral nerve in lying position.