“…Kern Singh and his team found that hospitalized patients, patients with milder preoperative lower extremity pain and patients with shorter preoperative symptom duration may achieve better clinical outcomes ( 15 , 16 , 17 ). On the other hand, patients with severe preoperative disability, significant low back pain, low mental functioning, and higher degrees of obesity (BMI ≥ 30) tend to have worse clinical outcomes ( 18 , 19 , 20 , 21 ). ASA (American Society of Anesthesiologists) classification, severity of comorbidities, time to surgery (TTS), and duration of symptoms (DOS) had no significant impact on patient clinical outcomes ( 22 , 23 , 24 ).…”