Anterior interval arthrofibrosis is the condition of abnormal scarring in the 'anterior interval' - the space below the kneecap and behind the patellar tendon.

The scarring 'ties down' the patellar tendon, and makes the knee stiff.


eBook - Arthrofibrosis and Patella Baja

This ebook explains how an abnormally low kneecap result from the inflammatory condition of arthrofibrosis

How to perform patellar mobilisations

A brief but high value eBook - fully illustrated - showing how to keep the tissues around the kneecap supple.

Anterior interval arthrofibrosis

This is a condition where scarring occurs in the space behind the patellar tendon - the...

The anterior interval

An explanation of the very important gap under the patellar tendon


A very popular and comprehensive coverage of the topic of arthrofibrosis (internal scarring in the knee joint) from Dr Frank Noyes of the Cincinnati Sportsmedicine and Orthopaedic Center.

Dr Peter Millett chats about his experience with infrapatellar contracture syndrome and the importance of recognising it early before the shortening of the patellar tendon becomes irreversible.



An abnormally low kneecap - patella baja or patella infera - may be the result of an inflammatory process called arthrofibrosis. This eBook explains the mechanism.

arthrofibrosis and patella baja