What Is Trigger Finger?
Trigger finger (stenosing tenosynovitis) causes your finger to catch, lock, or snap when you bend and straighten it. In severe cases, the finger gets stuck in a bent position and you have to manually straighten it with your other hand.
It's named for the triggering or clicking sensation—like pulling and releasing a trigger.
How It Happens
The Anatomy
Your finger tendons glide through a series of tunnels (pulleys) that hold them close to the bone. The first pulley at the base of the finger (A1 pulley) is where problems usually occur.
The Problem
The tendon or its sheath becomes inflamed and swollen. A nodule can form on the tendon. When this swollen section tries to pass through the narrow pulley, it catches—causing the locking and clicking.
Who Gets Trigger Finger?
Risk Factors
**Age:** Most common 40-60**Sex:** Women affected more than men**Diabetes:** Significantly higher risk**Rheumatoid arthritis****Repetitive gripping:** Tools, instruments, sports**Other hand conditions:** Carpal tunnel, De Quervain'sCommon Fingers
Thumb, ring, and middle finger most often affectedCan occur in multiple fingersMay affect both handsSymptoms
Early Stage
Stiffness, especially in the morningClicking or popping when bendingTender bump at base of finger (palm side)Mild discomfortProgressing
Catching when straighteningFinger locks in bent position momentarilyHave to force it straightMore painSevere
Finger stuck in bent positionCannot straighten without other handSignificant pain and limitationTreatment Options
Conservative Treatment
Activity modification:
Avoid repetitive grippingTake breaks from aggravating activitiesUse padded handles on toolsSplinting:
Night splint keeps finger straightPrevents locking during sleepWorn 6+ weeksNSAIDs:
Over-the-counter anti-inflammatoriesMay reduce swellingTemporary reliefExercises
Finger stretches:
Gently straighten the affected fingerHold 20-30 secondsRepeat 5-10 times dailyTendon gliding:
Make a fist, then straighten fullyBend at middle joints (hook fist)Bend at base joints (table top)Cycle through 10 timesFinger abduction:
Spread fingers apart, hold 5 secondsBring togetherRepeat 10 timesGrip strengthening (when not acute):
Squeeze soft ball gently10 repetitionsAvoid if increases symptomsMassage
Self-massage:
Gently massage the nodule at base of fingerCircular motions2-3 minutes, several times dailyMay help break up adhesionsCorticosteroid Injection
How it works:
Injected into tendon sheathReduces inflammationCreates space for tendon to glideSuccess rate:
50-70% get lasting relief from one injectionMay need repeat injectionLess effective in diabeticsConsiderations:
Relief may be temporaryCan cause skin changes if multiple injectionsUsually try 1-2 before considering surgerySurgery (Trigger Finger Release)
When indicated:
Failed conservative treatmentSevere or persistent lockingFinger stuck in bent positionThe procedure:
Outpatient surgery, local anesthesiaSmall incision at base of fingerA1 pulley is released (cut)Tendon can now glide freelyRecovery:
Move finger immediatelyMost normal use in 2-4 weeksFull recovery 4-6 weeksSuccess rate >95%Home Management
What to Do
Rest from aggravating activitiesWear splint at nightGentle stretching throughout dayIce if swollen (10 minutes)Massage the noduleUse ergonomic gripsWhat to Avoid
Forceful gripping when symptomaticRepeatedly forcing finger straightIgnoring worsening symptomsStopping treatment when it feels betterNatural History
Without treatment:
Some cases resolve on their ownMany persist or worsenRarely dangerous, but significantly affects functionWith treatment:
Most cases resolve with conservative care or injectionSurgery highly effective for persistent casesPrevention
If You Do Repetitive Hand Work
Take frequent breaksVary your grip and hand positionsUse padded, ergonomic handlesStretch hands regularlyAddress Risk Factors
Manage diabetes wellTreat other hand conditionsMaintain hand strength and flexibilityWhen to See a Doctor
Finger stuck in bent positionSignificant painNo improvement after 2-3 weeks of home treatmentSymptoms affecting work or daily activities
Trigger finger is more annoying than dangerous, but it can significantly impact your daily life. Most people get better with splinting, exercises, and maybe an injection. If those don't work, surgery is straightforward and highly effective. Don't just live with a finger that catches and locks—treatment works.