A trigger finger release is a minor surgical procedure that cuts a tight band of tissue at the base of your finger, allowing the tendon to glide freely again. It’s one of the most common hand surgeries performed, typically done in a clinic or outpatient setting under local anesthesia, and it takes only a few minutes. Most people are candidates after conservative treatments like splinting or steroid injections haven’t resolved the catching, locking, or pain in the affected finger.
Why the Finger Gets Stuck
Each finger has a series of small tunnels, called pulleys, that hold the flexor tendon close to the bone as you bend and straighten your hand. The first of these tunnels, known as the A1 pulley, sits right at the base of the finger where it meets the palm. In trigger finger, this pulley becomes thickened or inflamed, narrowing the space the tendon needs to slide through. The tendon itself can also develop a small nodule. Together, these changes create a mismatch: the tendon catches as it tries to pass through the constricted opening, producing the characteristic clicking, catching, or outright locking sensation.
When Surgery Becomes the Right Option
Surgery isn’t the first step. The standard initial treatment is nighttime splinting that keeps the finger straight, sometimes combined with a corticosteroid injection to reduce swelling around the pulley. If, after at least three months of these approaches, you still can’t actively straighten your finger, need to use your other hand to unlock it, or the triggering is painful enough to interrupt daily activities, surgical release is recommended.
Some people improve temporarily with injections but relapse. Others, particularly those with diabetes, tend to respond less well to conservative care. In these situations, moving to a release procedure sooner rather than later can prevent the finger from becoming permanently stiff in a bent position.
What Happens During the Procedure
The goal is simple: completely divide the A1 pulley so it no longer constricts the tendon. There are two main approaches.
Open Release
This is the traditional and most widely used technique. The surgeon makes a small incision, typically about one to two centimeters, over the base of the affected finger in the palm. With the pulley directly visible, the surgeon carefully cuts through it lengthwise. Being able to see the structures clearly is the main advantage: it minimizes the risk of accidentally nicking a nearby nerve or the tendon itself. Once the pulley is divided, the incision is closed with a few stitches.
Percutaneous Release
In this approach, the surgeon uses a needle (usually an 18-gauge needle) inserted through the skin to cut the pulley without making a traditional incision. It was first described in 1958 and has gained popularity because of its minimally invasive nature. The surgeon identifies the pulley’s location on the skin surface, inserts the needle, and moves it back and forth to sever the tissue. The tradeoff is limited visibility. Because the surgeon can’t directly see the structures, there’s a slightly higher risk of incomplete release or nerve injury, particularly in the thumb where a digital nerve runs close to the pulley.
Both techniques are performed under local anesthesia. Many hand surgeons now use a method called wide-awake local anesthesia, which numbs the area without sedation. You stay fully alert, and no tourniquet is needed. This approach is safer for people with health conditions that make sedation risky, costs less, and has a practical benefit: the surgeon can ask you to bend and straighten your finger during the procedure to confirm the triggering is completely gone. Surveys show that 94% of patients who undergo hand surgery this way say they’d choose it again.
Success Rates and Risks
Trigger finger release has a high success rate. The vast majority of people experience complete resolution of catching and locking. Recurrence is possible but uncommon, and when it does happen, it can occur months or even years later. Incomplete division of the pulley, particularly at its near end, is the most common reason symptoms persist after surgery.
In a study of 795 fingers treated with open release, the overall complication rate was 12%, but most complications were minor. The breakdown:
- Persistent pain, swelling, or stiffness: 4.9%
- Persistent or recurrent triggering: 2.6%
- Joint contracture (stiffness limiting range of motion): 2.5%
- Superficial infection: 1.0%
- Deep infection: 0.5%
- Temporary nerve irritation: 0.3%
- Bowstringing (tendon pulling away from the bone): 0.1%
Bowstringing happens when too much of the pulley system is cut, allowing the tendon to lift away from the finger during gripping. It’s extremely rare when only the A1 pulley is released. The precision of the cut matters: too little and triggering continues, too much and the tendon mechanics are disrupted.
Recovery Week by Week
You’ll likely go home the same day, often within an hour. The finger will be bandaged, and you may notice numbness or tingling near the incision from the local anesthesia and minor nerve irritation. That tingling typically fades within a few days, though in some cases it can linger for several months before fully resolving.
For the first one to two weeks, avoid using the affected hand for anything beyond very light tasks. That means nothing heavier than one to two pounds, and no repetitive hand movements like typing, using a mouse, chopping food, or vacuuming. Power tools and anything that vibrates are off-limits. Stitches come out at one to two weeks.
Stiffness is normal and expected. It may feel hard to move the finger at first, and this typically improves over several weeks. Full healing takes about six weeks. After that point, the finger generally moves easily and without pain.
If your job doesn’t require hand use, you can often return to work within a day or two. Jobs that involve gripping, lifting, or repetitive hand movements may require up to six weeks off.
Exercises That Help Recovery
Gentle movement after surgery is important for preventing scar tissue from limiting your range of motion. Most hand surgeons recommend starting simple exercises within the first week or two, done two to three times a day with about 10 repetitions each. Common exercises include:
- Finger spreads: Spreading all fingers wide apart, then relaxing them back together
- Passive finger lifts: Using your other hand to gently straighten the surgical finger
- Tendon glides: Moving through a sequence of hand positions, from a straight hand to a hook fist (bending only the middle and tip joints) to a full fist, which helps the tendon slide smoothly through its rebuilt pathway
- Isolated joint bending: Bending just the tip joint or just the middle joint of the finger while keeping the rest straight, which targets specific segments of the tendon
Stiffness lasting several weeks or even a few months after hand surgery isn’t unusual. Consistency with these exercises makes a measurable difference in how quickly you regain full motion. Your surgeon or a hand therapist can tailor the program if your progress plateaus or if you’re recovering from release on the thumb, which can take slightly longer due to its different anatomy and heavier use.