Knee instability can be caused by different issues, including ligament tears, arthritis, and nerve damage. It may be the only symptom you have, or your knee may also hurt, pop, bruise, or swell.
Source: Verywell health
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.
Knee instability can be caused by different issues, including ligament tears, arthritis, and nerve damage. It may be the only symptom you have, or your knee may also hurt, pop, bruise, or swell.
Source: Verywell health