This demonstrates subluxation, patella tilt, lateral patella tilt, lateral patella hyperpressure and any arthritis or thinning of the articular cartilage.
Clinical examination may reveal lateral subluxation or lateral patello-femoral tracking.
The instability may also be noticed on external rotatory movements which cause posterior subluxation of the lateral tibial plateau.
A partial dislocation where the upper arm bone is partially in and partially out of the socket is called a subluxation.
We report the case of a mother and son incidentally discovered with heritable congenital tibiofemoral subluxation.