Patellofemoral subluxation is when the patella briefly jumps almost out of the walls of the groove in the femur bone, but then returns to its normal position.

subluxation episode
patellar subluxation

The patella remains contained by the boundary of the underlying groove, and immediately returns to its normal position and the person can resume activities..


Symptoms of patellofemoral subluxation

Usually subluxation is experienced as a momentary painful 'catching' during walking.

patellar subluxation
kneecap subluxation
unstable kneecap

Dr Sheila Strover (Editor)
BSc (Hons), MB BCh, MBA

See biography...