Knee cartilage efficiency. Diet chart.

Problem started with knee pain which solve after joining yoga. But sudden leg injury at the upper part of soul subsequently lead to bed ridden condition. As a consequence no exercise lead to back problem. Symptoms started with sudden falling down will standing. Legs are unable to take the body weight. pain subsided but movement of legs is restricted. Now she is bed ridden for two years. Sensation from legs slowly decreases. Knee x rays says reduce in space between the knees and cartilage deficiency. Back x ray and MRI says disc dislocation. With physiotherapy sensation is regain in legs but movement is restricted. She cannot move lower limbs and hips. Strangely there is no pain in back or legs. It's is like paralysis of lower body. Treatment suggested by different doctors are spinal surgery, steroid injection in back, steroid and hyaluronic injections in knees. Vitamin and calcium supplements are given. Please suggest the best treatment and side effects, duration and diet chart.