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Hand / fingers · Trigger Finger / Thumb (Stenosing Flexor Tenosynovitis)

Trigger Finger

One of the tendons that bends your finger has trouble sliding through a snug tunnel in your palm. A small swelling or knot on the tendon catches at the tunnel entrance, so the finger clicks, catches, or locks bent and then snaps straight. The tender lump you can feel is in the palm, at the base of the finger, not at the finger joints themselves.

The pulley and tendon get a mismatch, often from repetitive forceful gripping, and it’s notably more common if you have diabetes (and sometimes with gout, thyroid problems, or rheumatoid arthritis). It’s a mechanical snag, not ‘arthritis’ of the joint and not something you’ve damaged by using the hand.

How it typically shows up

A finger or thumb that CATCHES, CLICKS, or SNAPS as it bends and straightens, sometimes locking bent (classically worse first thing in the morning, then loosening through the day), with a tender nodule in the palm at the base of that finger. This is a mechanical tendon-and-pulley pattern, not joint-surface wear: it is distinct from thumb-base arthritis (deep ache at the thumb-base joint on pinch, no catching) and finger-joint arthritis (hard bony nodes at the joints, no triggering). A blocking splint, activity change, and gentle tendon glides are the conservative plan.

How long recovery takes

Early, mild triggering often settles when you stop forcing catches. Wear the blocking splint consistently, ease repetitive hard gripping, and maintain gentle tendon glides. Track whether catches become fewer and easier to release over weeks.

The phased recovery approach

  1. Phase 1 · 1–6 weeks

    Calm

    Calm the catching first, use the splint and ease off hard gripping so the finger stops snapping through the bend.

    What you get back: fewer catches through the day.

    • Thumb Opposition: 1–2 sets × 3–10 reps · Move your thumb across your palm, not just its tip. · Hold your hand up with the fingers relaxed and open.
    • Flexor Tendon Glide Sequence: 1–2 sets × 8–10 reps · The displayed sets are the day’s total. Spread them through the day with the splint off. Move smoothly without forcing a catch. Don’t repeat the whole session. · Hold your affected hand up with the wrist neutral and the fingers straight.
    • Finger Spread: 1–2 sets × 3–10 reps · Move gently and controlled, never forcefully. · Rest your hand flat on a table, palm down.
    • Gentle Wrist Bends: 1–2 sets × 3–10 reps · Move at your wrist, fingers relaxed throughout. · Support forearm on table or thigh, hand hanging off the edge.

  2. Phase 2 · 2–6 weeks

    Rebuild

    As catching eases, gently restore full, smooth bending without forcing snags.

    What you get back: a smooth bend with no snag.

    • Flexor Tendon Glide Sequence: 2–3 sets × 10 reps · The displayed sets are the day’s total. Spread them through the day with the splint off. Move smoothly without forcing a catch. Don’t repeat the whole session. · Hold your affected hand up with the wrist neutral and the fingers straight.
    • Thumb Opposition: 2–3 sets × 10 reps · Move your thumb across your palm, not just its tip. · Hold your hand up with the fingers relaxed and open.
    • Tabletop Bend: 2–3 sets × 10 reps · Keep wrists still, moving only knuckles. · Hold your hand up with the fingers straight and together.
    • Finger Spread: 2–3 sets × 10 reps · Move gently and controlled, never forcefully. · Rest your hand flat on a table, palm down.

  3. Phase 3 · 2–4 weeks

    Daily life

    Keep the finger gliding smoothly through its full range so the catch does not come back.

    What you get back: a finger that moves freely, catch-free.

    • Flexor Tendon Glide Sequence: 3 sets × 10–12 reps · The displayed sets are the day’s total. Spread them through the day with the splint off. Move smoothly without forcing a catch. Don’t repeat the whole session. · Hold your affected hand up with the wrist neutral and the fingers straight.
    • Hook Fist Tendon Glide: 3 sets × 10–12 reps · Start with this one, after a warm-water soak if that helps your fingers loosen. · Hold your affected hand up, wrist neutral and fingers straight. A warm-water soak beforehand may help your fingers loosen.
    • Finger Spread: 3 sets × 10–12 reps · Move gently and controlled, never forcefully. · Rest your hand flat on a table, palm down.
    • Thumb Opposition: 3 sets × 10–12 reps · Move your thumb across your palm, not just its tip. · Hold your hand up with the fingers relaxed and open.

Exact exercises, sets and progression depend on your severity, equipment and goal. This is the shape of the program, not a one-size prescription.

What matters while you recover

  • Stop the trigger (this matters most)

    Stopping the catch matters most: a blocking splint holds the big knuckle just short of straight for four to six weeks, often six to ten. Never force through the catch.

  • How much soreness is okay

    Keep the moves gentle and smooth, never snapping the finger through the catch. Sore for more than half an hour after means too much, so ease off next time.

  • Track the catching, don’t force it

    Consistency beats forcing it: use the night splint, ease hard gripping, never pry it through a lock, and track whether catches get less frequent and easier to release.

Common questions

Why does it lock most in the morning?
Overnight the tendon and its sheath swell a little, so the catch is worst when you first move it, and it tends to loosen as you use the hand through the day. That morning lock-and-loosen pattern is classic for trigger finger.
Should I keep forcing it through the catch?
No, repeatedly snapping it through tends to keep it irritated. A blocking splint that stops the finger making the triggering bend, plus easing off heavy repetitive gripping, lets it calm down. Move it gently and smoothly instead of forcing the lock.
Will exercises cure it?
The evidence for exercise alone is limited, but tendon glides, a short-term night splint, and easing repeated hard gripping can help early, milder cases. Use the plan consistently and track whether locking becomes less frequent.
What should I do if it keeps catching?
Do not force a locked finger straight. Warm the hand, use gentle tendon glides, reduce repeated hard gripping, and use the night splint consistently. Track how often it catches and how easily it releases from week to week.

Go deeper

Related hand / fingers conditions

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