What is a congruence angle knee?

The congruence angle is measured by drawing a line perpendicular to the deepest point of the trochlea and drawing a second line from the apex of the trochlea to the most posterior point of the patella.

What is a patellofemoral arthroplasty?

Patellofemoral replacement is a type of partial knee replacement in which only a portion of the knee is resurfaced.

What causes increased Q angle?

The Q angle typically increases a degree with weightbearing owing to a valgus adaptation of the knee. In general patients with Q angles greater than 14° are vulnerable to patellar conditions, particularly abnormal tracking and instability.

How long does a patella femoral replacement last?

With current kneecap implants, a kneecap replacement can last for up to 20 years.

Is patellofemoral syndrome curable?

This is a book-length tutorial covering every aspect of patellofemoral pain: the nature of the beast (etiology), diagnosis and related conditions, prognosis and worst case scenarios, and more than two dozen reviews of PFPS treatment options. It concludes with plenty of specific advice, but there are no miracle cures.

How long does it take to recover from a patella replacement?

Patella Replacement Surgery Recovery It may take up to three months for your knee to heal fully after surgery. However, you should be healed enough to begin driving again within about one month. Most patients may return to work within six to eight weeks.

Can you run after patellofemoral replacement?

Can I run after Patellofemoral Replacement? The majority of patients after Patellofemoral Replacement will be able to get back to jogging, skiing, playing golf, and social tennis.

How does high Q angle cause knee pain?

A high Q angle means mal-tracking of the patella is likely. As a result it does not travel over the front of the knee joint as it should. Over time this causes microtrauma to the cartilage on the rear of the patella.

What are people with a high Q angle at risk for?

However, the extent to which excessive Q angle increases the risk of knee injury remains unclear. Although the Q angle has been suggested as a risk factor for anterior cruciate ligament injury (ACL),10–13 retrospective risk factor studies4,5,14 have failed to confirm this relationship.

Do you still have a knee cap after total knee replacement?

This procedure, called a total knee arthroplasty (TKA), involves replacing all of the joint surfaces in the knee. In a total knee replacement, sometimes the under-surface of the patella (knee cap) is resurfaced and polymer plastic implant is attached to it.