All patients will be anaesthetized with spinal technique. Each patient will be treated with intravenous morphine - patient controlled analgesia (PCA). 2 of 3 groups of patients will receive ultrasound-guided transversus abdominis plane or quadratus lumborum block to treat postoperative pain. Postoperative pain will measured with visual-analogue scale (VAS). Total morphine consumption and time to the first demand will be noted. 1, 2, 6 months after surgery each patient will be called to assess neuropathic pain with Neuropathic Pain Symptom Inventory (NPSI).
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Postoperative pain measured with VAS
Timeframe: up to 24 hours after surgery