Hi, Welcome to Health care magic forum.
As you describe, it appears that there is some problem with the cartilages of the knee, and the foot, may be congenital or due to some disease, or
injury.
I advise you to consult an orthopedic surgeon for diagnosis. you may need to have an M.R.I. for diagnosis.
I usually prescribe to my patient with such symptoms nuerotrophic injections for 10 consecutive days and then periodically. supplements of calcium, vitamin D, and pain killers when needed.
Avoid taking potato, other tubers, tomato, egg, chicken, and sea foods.
wishing for a quick and complete recovery. Thank you.