Congenital trigger thumb
Congenital Trigger Thumb
Congenital trigger thumb (pronunciation: kənˈjenədl ˈtrigər θəm), also known as pediatric trigger thumb or trigger thumb in children, is a condition that affects the thumb in children. It is characterized by a thumb that locks or catches in a bent (flexed) position. The thumb may straighten with a snap, similar to a trigger being pulled and released.
Etymology
The term "congenital" is derived from the Latin word 'congenitus', meaning 'born with'. "Trigger" refers to the snapping or triggering action of the thumb, and "thumb" refers to the digit that is affected by this condition.
Symptoms
The primary symptom of congenital trigger thumb is the inability to fully extend the thumb, often accompanied by a noticeable nodule at the base of the thumb. Other symptoms may include thumb stiffness, discomfort, and swelling.
Causes
The exact cause of congenital trigger thumb is unknown. However, it is believed to be due to a discrepancy in size between the flexor pollicis longus tendon and the A1 pulley, which is a part of the tendon sheath in the thumb.
Diagnosis
Diagnosis of congenital trigger thumb is typically made through a physical examination. The doctor may also ask about the child's medical history and symptoms.
Treatment
Treatment options for congenital trigger thumb include non-surgical methods such as observation and splinting, and surgical methods such as trigger thumb release surgery.
Prognosis
With appropriate treatment, the prognosis for congenital trigger thumb is generally good. Most children regain full use of their thumb following treatment.
See also
External links
- Medical encyclopedia article on Congenital trigger thumb
- Wikipedia's article - Congenital trigger thumb
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