BSSH ICHS 2021 Trigger Thumb in Children

Trigger thumb in children is seen between 8-30 months of age, with an incidence of about 3/1000 births. It presents as a lump on the flexor pollicis longus tendon and can be graded based on the ability to flex and extend the thumb interphalangeal joint. While some cases may resolve spontaneously, splinting and surgery can effectively treat trigger thumb when it does not resolve on its own. Surgery involves dividing the A1 pulley to release the tendon, avoiding damage to other pulleys, and long term follow up shows it is an effective treatment with low risk of complications and normal pinch strength.