For knee pain that has just started
1) Rest and avoid activities that aggravate your pain, especially weight bearing activities.
2) Apply ice. First, apply it every hour for up to 15 minutes. After the first day, apply it at least four times per day.
3) Keep your knee raised as much as possible to bring any swelling down.
4) Wear an elastic bandage, which you can buy at most pharmacies.
5) Sleep with a pillow underneath or between your knees.
Preventons:
A) Always warm up before exercising and cool down afterward. Stretch your quadriceps and hamstrings.B) Avoid running straight down hills -- walk down instead.
C) Bicycle or swim instead of run. Reduce the amount of exercise you do.
D) Run on a smooth, soft surface, such as a track, instead of on cement.
E) Lose weight if you are overweight.
Exercise
Simple analgesics
Injection inside knee joint
Arthroscopy
TKR