ANALYSIS OF RISK FACTORS FOR SUCCESS OF LUMBAR SPINAL STENOSIS SURGERY

To identify the patient profile that obtains better clinical and quality of life improvement after lumbar spinal stenosis surgery, comparing the results in the pre and postoperative periods. Thirty-seven patients with lumbar spine stenosis submitted to surgery were prospectively evaluated. Through the 36-Item Short Form General Health Survey (SF-36) questionnaire we performed a preoperative analysis to identify morbidities and social security benefit earning. The SF-36 is a subjective postoperative questionnaire to assess surgical success six months after the surgery. There were unfavorable outcomes in patients who received social security benefits and in those who had morbidities. According to the SF-36 score, the surgical result is better when the patient is non-smoker (p=0.05), non-hypertense (p=0.040), non-diabetic (p =0.010) or non sedentary (p=0.019), respectively on mental health, pain, social aspects and general health domains. The patient profiles that best benefit from the surgery are those who do not have morbidities and had no social security benefit. Evidence Level II, Prospective Study.