Thank you...I will go for the second opinion!
Hi there!
Well, without the relevant clinical details or a detailed clinical evaluation it would be difficult to comment precisely on the situation. Possibilities that may need to be considered include inflammations such as bursitis, tendonitis, further degeneration, other injuries to muscles ligaments, micronutrient deficiencies, neuro-muscular issues etc. I do not suspect age to be a factor here. I would suggest considering a second opinion with another orthopedician for a detailed evaluation of the situation and suggestion of an appropriate management plan. Meanwhile you could try ice-packs. Warm compresses and tylenol/ OTC NSAIDS for pain relief. Physiotherapy (if feasible) may also help improve muscle strength around the knee and alleviate your symptoms.
Hope this is helpful.
Take care!