Knee pain isn't always arthritis. Dr. Ashish Singhal, robotic knee replacement surgeon in Udaipur, explains six real causes of knee pain, from meniscus tears to hip and spine problems, and when to see a specialist.

Both knees bad? Dr. Ashish Singhal, robotic knee replacement surgeon at Paras Hospital and Mahe Clinic, Udaipur, explains when he replaces both knees in one surgery, when he replaces only one, and why he sometimes says no. Watch the video and read the answer in English and Hindi.