Interviews
postoperative pain
DIABETES MELLITUS, AIDS, AUTOIMMUNE DISEASES
Before physical examination a structured interview was conducted by one investigator (TM) using a predefined questionnaire. The questionnaire included questions regarding general health conditions (nicotine or alcohol consumption, autoimmune diseases, diabetes mellitus) and postoperative features of daily life (postoperative pain, intake of analgesics, limitation in daily or physical activities and use of walking aids).