The Changes seen in your musculoskeletal system are age related symptoms, Cartilage are Outer lining of the bones which in your case as you say, its broken, please understand, Cartilage cannot be regrown naturally as other tissue in the body. The knee give out fast, because your whole body weight is been carried by the weak knees while you walk, this in turn could lead to impaired gait cycle which ultimately result in pain in ankle causing tendonitis.
if you take proper medication / physical a ...
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