What Laxative Should be Used After Hip Fracture Surgery?

To conduct a randomized clinical trial to determine how best to prevent constipation after hip fracture surgery using laxatives.

Inclusion Criteria: * Acute hip fracture surgery patients from one of two orthopedic departments from hospitals in the Southern Region of Denmark. * Age≥ 65 years * The patients should be able to speak and understand Danish. Exclusion Criteria: * Patients: * with known chronic constipation (defined from Wexner constipation score) * with known use of laxatives at admission * who participate in other similar clinical studies * who is terminally ill * who is restraint * who is in isolation * with severe heart disease defined as New York Heart Association (NYHA) III og IV * with severe chronically inflammatory bowel disease * with acute abdominal surgical conditions, eg. ileus, obstruction or perforation * with dysphagia where the patient can not swallow tablets/oral liquids * with toxic megacolon * with gastric emptying disorder * with severe electrolyte disorder (P-kalium: \< 2.5 mmol/l og P-natrium: \