Pediatric Orthopedics

Congenital Trigger Thumb


Congenital trigger thumb is ten times more common  than the  trigger  fingers of the other fingers. The incidence in children aged around 1 years was reported as 1-3.3 in 1000. Bilateral thumb involvement is seen in one fourth of the cases. Studies show that the clinical presentation was not seen in birth, but rather in the following months.

What are the signs of congenital trigger thumb?

Trigger thumb has for clinical stages:  Stage I;  – a nodular structure is palpated in the palmar site of first metacarpo-phalengeal joint. There is no triggering and snapping. Stage II, the thumb is actively triggered  and Released to full extension. Stage III; thumb can not be straigthened out actively, however, the thumb is triggered and can be straightened passively with a snapping click. Stage IV; the thumb is in locked position in flexion And can not be brought in extension both passively and actively. Either enlargement of a tendon segment, or  narrowing the tunnel in which tendon slides cause triggering and other clinical symptoms.

Treatment of trigger thumb

Patients under 1 year of age with congenital trigger thumb may benefit from splinting, massage, and exercise therapy. Surgical treatment is used in patients older than 1 year old with locking trigger finger.  over 1 year of age underwent surgical treatment of diseases of the crash is showing the flattened congenital trigger finger. Surgical treatment is made by  1-2 cm incision with a microsurgical technique. In surgical treatment  A1 tunnel in which the tendon passes is released. Recurrence is not expected.

About the author

Prof.Dr. Seref Aktas