Knee joint pain & knocking. Cycling.

Hi sir, 6months back I had small injury on my right hand shoulder elbow due batmimton. Then i consult ayurvedaic clinic due to swelling they suggested medication for 6months but i used around 4months after that i stoped. Then i realised its not injury something happened in my body because slowly i m getting pains in both knees and elbow joints, within month getting worst knocking sounds on knees and elbows. Then i consult orthopedic doctor. After scanning and blood tests he found that cartilage wear out and Vitamin D difficiency. Present level 18nmol/L. Then he suggested medicine for 1 year and spend 1hr everyday in sunlight. It's been 2 months started medication still no improvement. Now getting sounds in every joint. What should i do. Suggest better please. Should i go for surgery or cartilage injection or something else. Note : i m working in construction indore works(Underground works) . There is no scope of sunlight. I m sport person - running, cricket, batmimton, cycling.