General Information on Trigger Finger
Disease Details and Frequently Asked Questions
It is a musculoskeletal disorder characterized by the mechanical entrapment of the flexor tendons—the robust fibrous cords responsible for bending the fingers—within the narrowed, constrictive tunnel (the A1 pulley or sheath) located at the palmar base of the digit, causing the finger to lock in flexion.
When the flexor tendon becomes chronically inflamed, it thickens or forms an edematous nodule, making it exceedingly difficult to glide smoothly through its tight protective sheath. When the patient curls the finger and subsequently attempts to forcefully straighten it, the nodular tendon catches at the entrance of the sheath. With increased effort, it finally pops forcefully through the narrow gap, eliciting a sudden, painful 'click' or 'snap'—functionally mimicking the pulling and releasing of a gun's trigger.
The primary catalyst is repetitive mechanical microtrauma to the flexor tendons, frequently observed in individuals whose occupations or hobbies demand continuous gripping or repetitive hand motions—such as tailors, gardeners, industrial workers, or musicians. The incidence is substantially elevated in patients with underlying systemic morbidities, particularly Rheumatoid Arthritis and Diabetes Mellitus.
The cardinal symptoms are a pronounced stiffness and inability to uncurl the fingers (predominantly worst upon waking in the morning), the palpation of a tender, hardened bump (nodule) right at the base of the affected finger on the palm, and a sudden, excruciatingly painful mechanical locking and subsequent violent 'snapping' release when attempting to extend the digit.
No. Trigger finger is a progressive anatomical and mechanical strangulation. Topical ointments, pain creams, or oral anti-inflammatories are anatomically incapable of dilating the constricted fibro-osseous tunnel. If medically neglected, the tendon may become permanently incarcerated, leaving the finger irrevocably locked in a tightly curled posture.
In the early, milder stages of the disease, targeted conservative therapy is highly efficacious; a localized Corticosteroid injection is administered directly into the affected tendon sheath to forcefully reduce the inflammatory edema and shrink the tendon nodule. If the injection proves ineffective (or if the locking frequently recurs), a definitive minor surgical procedure (Trigger Finger Release) is performed under local anesthesia. During this 5-minute outpatient surgery, the roof of the constrictive pulley is cleanly incised, granting the tendon permanent anatomical freedom and eradicating the mechanical conflict entirely.
Our health library contents are prepared for informational purposes only and with scientific data available at the time of recording. For all your questions, concerns, diagnosis, or treatment regarding your health, please consult your doctor or a healthcare institution.
