Other postoperative data will be collected as variables for risk factors. Postoperative pain at rest will be evaluated using the pain Visual Analog Scale (VAS) during the same visit as CAM on POD 1, 2 and 3. Each patient will score pain experienced at rest on a scale, with 0 = no pain and 10 = maximum pain. Sensory impairment will also be assessed during the postoperative interviews similar to the preoperative assessments.