Trigger Finger: Why It Catches and How Therapy Releases It

What is actually happening

Flexor tendons glide through a tunnel of pulleys. When the tendon or its sheath thickens at the A1 pulley near the base of the finger, the tendon can no longer slide smoothly. It catches, then releases with a pop. Left alone, the finger begins to hold a flexed posture and the joints stiffen.

Conservative treatment that works

• A custom blocking orthosis that immobilizes one joint while allowing the rest of the hand to work — this breaks the catching cycle without freezing the whole finger.
• Tendon gliding sequences that keep the tendon moving through its full excursion.
• Inflammation and edema management, plus modification of repetitive gripping tasks.
• Joint motion work to reverse stiffness that has already set in.

After a steroid injection or release surgery

Injections often quiet the inflammation but do not restore lost motion or grip. Therapy after an injection or an A1 pulley release focuses on scar management, full active motion and a graded return to grip so the finger does not trade catching for stiffness.

Do not wait it out

The longer a finger stays locked in flexion, the more the joint capsule tightens. Early therapy is shorter, more comfortable and more likely to avoid surgery.

Frequently asked

Can trigger finger resolve on its own?

Mild cases sometimes settle with rest and activity changes. Persistent catching, locking or morning stiffness usually needs orthotic management and guided tendon gliding.

Will I need to wear the orthosis all day?

Most blocking orthoses are worn full-time for a period, then weaned. Because they immobilize only one joint, most patients keep using the hand for daily tasks throughout.