The patella rests in the groove along with the femur called the trochlear groove. Once you bend and straighten your knee, the patella moves forwards and backwards within this groove. Normally about six months or so prior to the operation, there'll be considered a 'pre-admission' or 'pre-evaluation' clinic. At this clinic a http://knee cap replacement https://www.theorthopaedicandpainpractice.com/knee-cap-replacement-understanding-the-basics-of-this-orthopaedic-surgery/