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The patella is the kneecap, the small bone sitting over the front of the knee. Plural = 'patellae'.

What is a Patella?


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Basic information about kneecap disorders and their management.

Ten excellent patellar websites

Here is a list of useful resources for patellar patients.

Because the patella is an integral part of the whole muscle-tendon-bone structure that extends the knee, it can be affected by many factors, from the foot up to the lower trunk. Therefore it is difficult to decide what to keep in a website offering an overview of...


Why does my knee cap (patella) hurt?

The patella (knee cap) is exposed to incredibly high loads during sporting activities.

Even activities of daily living, squatting and jogging can put loads equivalent to seven times body weight through the patella - even stair climbing puts loads of three times body weight through it.

So it is hardly surprising things go wrong with this joint.

What we should really be asking is


Rotational Deformity & Miserable malalignment

In a proper rotation deformity the most common situation is that you come off your motorbike, you fracture your femur, and it unites malrotated.

Then you need to have the femur derotated back to a normal position to either settle the problem down, perhaps in association with a var-ising or valg-ising...

What's special about the kneecap?

The kneecap is an unusual structure and understanding its anatomy and relationships is key to understanding its function.