This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
When do you operate for a prolapsed disc 
Select and explain. 
A. Busy executive needs quick surgery, B. Only with weakness no pain, C. Severe paininterfering with activity and not relieved by rest and treatment of 8 weeks, D. Patient of PID with difficulty in ambulation
C: Severe paininterfering with activity and not relieved by rest and treatment of 8 weeks
Answer: C: Severe paininterfering with activity and not relieved by rest and treatment of 8 weeks 
Explanation: Indications for surgery in cases of Prolapsed interveebral disc are:Progressive neurological deficitCauda-equina syndromeSevere sciatic tilt(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 234, 302)