Source: Healthline
An injury or arthritis most likely causes pain outside the knee. A doctor can determine the cause based on your other symptoms and the results of imaging tests.
Partial Knee Replacement : Partial knee replacement is a surgical option if your arthritis or injury is confined to a single compartment of your knee. Hip Replacement : Hip replacement surgery aims to give patients a pain free normal hip again.
Source: Healthline
An injury or arthritis most likely causes pain outside the knee. A doctor can determine the cause based on your other symptoms and the results of imaging tests.