Postoperative Pain Treatment in Total Hip Arthroplasty: A Study to Assess the Effect of Local Analgesia

Inclusion Criteria: * Scheduled for an uncemented unilateral Total Hip Replacement because of osteoarthritis * Willingness and possibility to follow the instructions of the study * 18 years or older * written informed consent and authority after it has been read and understood. Exclusion Criteria: * Operation with anterior approach or using navigation * Do not understand or speech danish * Can not use the pain-score Numerical Rating Scale (NRS) * Special indications for Total Hip Replacement * Anaesthetized in general anaesthesia where a tube is demanded * Daily use of strong opioids, based on the investigators assessment * Fertile women * ASA-score: 3 and 4 * Known allergy against the standardized pain treatment, the study drugs and placebo, Ropivacaine, Ketorolac, Adrenalin. * Treatment with Lithium, Dihydroergotamin, full anticoagulant treatment or MAO-inhibitor * Following illness: * Active gastric ulcer or earlier gastrointestinal bleeding, ulceration or perforation of any kind. * Suspicions of manifest gastrointestinal bleeding and/or cerebrovascular bleeding * Haemorrhagic diathesis * Coagulation disorder * Severe thrombocytopenia * Severe heart insufficiency * Severe risk of postoperative bleeding or delayed haemostatic * Myocardium hypertrophy or ischaemic heart disease * Hypertension * Hypovolemics * Anhydration * angiooedema * Asthma * Bronchospasm * Severe liver insufficiency * Rhinostenosis because of polyostotic * Narrow-angled glaucoma * Phaeochromocytoma * Low plasm-potassium * Thyreotoxicosis