Anterior interval release

An anterior interval release is a surgical procedure to remove scar tissue in the 'anterior interval' - a region behind the patellar tendon.

Surgery for such scarring (arthrofibrosis) is specialist domain, and this procedure should only be carried out by a surgeon experienced in this topic.

Synonyms: 
AIR
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Anterior interval arthrofibrosis

This is a condition where scarring occurs in the space behind the patellar tendon - the 'anterior interval' - eventually contracting down and pulling the patella into an abnormally low and painful position, and limiting the knee's range of motion.

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The anterior interval

The anterior interval is a gap between the tibia and the patellar tendon just at the top of the tibia.

anterior interval

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Dr Peter Millett discusses why knee surgeons need to be aware that arthrofibrotic scarring can occur in this area because of the position of their arthroscopic portals (cuts).

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