Subluxation is another word for partial dislocation of a bone. Patellar subluxation is a partial dislocation of the kneecap (patella). It’s also known as patellar instability or kneecap instability.

Several aspects of your leg's strength and stability can be determined with a straight leg raise test (SLR). A doctor performs a straightforward leg test by lying the patient flat on a bed and raising ...