Quick Answer: Trigger finger is a condition where inflammation narrows the tendon sheath in a finger, causing it to catch or lock when bent. Treatment ranges from rest and splinting to corticosteroid injections or minor surgery, depending on severity and how long symptoms have been present.
Trigger finger has one of the most descriptive names in orthopedics. When the condition is active, the affected finger may snap or pop as it bends, get stuck in a bent position, or lock suddenly and require the other hand to straighten it. In severe cases, the finger cannot be straightened at all without intervention. This condition, medically known as stenosing tenosynovitis, is common across all age groups and is frequently seen in patients throughout the Inland Empire, Pomona Valley, and San Gabriel Valley.
The good news is that most cases of trigger finger respond well to treatment, and surgical correction, when needed, is a minor procedure with excellent outcomes.
How Trigger Finger Develops
Each finger has flexor tendons that run from the forearm through the palm and into the fingertip, housed within a sheath of tissue. Along this sheath are ring-shaped structures called pulleys that keep the tendon close to the bone as the finger moves. When the tendon becomes inflamed or the pulley thickens, the tendon cannot glide smoothly through this narrow channel. The result is catching, clicking, locking, or triggering.
Risk Factors
Anyone can develop trigger finger, but certain factors increase the risk:
- Diabetes: People with diabetes are significantly more likely to develop trigger finger, and it tends to affect multiple fingers.
- Rheumatoid arthritis and other inflammatory conditions, which increase tendon sheath inflammation
- Occupations or hobbies involving repetitive gripping: construction workers, musicians, farmers, and gardeners are commonly affected
- Age between 40 and 60, when the condition is most prevalent
- Women are affected more often than men
Recognizing the Symptoms
Trigger finger typically develops gradually. Early on, you may notice:
- Stiffness and soreness at the base of the affected finger, especially in the morning
- A tender nodule or lump in the palm at the base of the finger
- A catching sensation when bending and straightening
As the condition progresses:
- The finger locks in a bent position and requires force to straighten
- Straightening the finger produces a snap or pop
- In severe cases, the finger becomes fixed in a flexed position
The ring finger and thumb are most commonly affected, though any finger can develop the problem. Multiple fingers may be involved, particularly in patients with diabetes or inflammatory arthritis.
Diagnosis and Evaluation
Trigger finger is a clinical diagnosis. Your orthopedic hand specialist will examine the finger for the characteristic tenderness over the A1 pulley (at the base of the finger in the palm), feel for a nodule, and assess whether the finger catches or locks during movement. In most cases, no imaging is required.
Treatment Options: A Graduated Approach
Splinting and Activity Modification
For mild cases, resting the finger by avoiding the triggering activity and using a finger splint at night to hold the digit in a slightly extended position can reduce inflammation and allow the tendon to recover. This is most effective in the early stages before the condition becomes established.
Corticosteroid Injection
A corticosteroid injection into the tendon sheath is the most commonly used and most effective non-surgical treatment for trigger finger. Studies consistently show resolution rates of 50 to 90 percent with a single injection, with success rates being highest in patients who have had symptoms for less than six months, according to research reviewed by the AAOS. A second injection may be offered if the first provides partial but incomplete relief. Injections in patients with diabetes tend to be less effective and may offer only temporary benefit.
Surgical Release
When injections do not provide lasting relief or when the finger is locked in a fixed position, a trigger finger release is recommended. This is a minor outpatient procedure, typically done under local anesthesia, in which the surgeon makes a small incision in the palm and divides the thickened A1 pulley to release the tendon. The procedure takes 10 to 15 minutes and has a very high success rate.
Recovery involves keeping the hand elevated for the first few days, doing range-of-motion exercises, and returning to most activities within two to four weeks. Our hand and wrist surgeons at Garey Orthopedic Medical Group perform this procedure routinely for patients across Claremont and the Inland Empire.
Percutaneous Release
An alternative to open surgery, percutaneous release uses a needle inserted through the skin to divide the pulley without an incision. It is appropriate in selected cases and can be performed in the office. Outcomes are comparable to open release in experienced hands.
When to Seek Evaluation
Do not wait until the finger is completely locked to seek care. Earlier treatment is associated with better response to injections and a lower chance of needing surgery. Schedule an evaluation if your finger is catching regularly, if morning stiffness is limiting your hand function, or if you have noticed a tender nodule in your palm. Same-day appointments are available at our Claremont practice for new patients.
If you're experiencing finger locking, catching, or pain at the base of a finger, the team at Garey Orthopedic Medical Group is here to help. We offer same-day and next-day appointments for new patients. Visit gareyortho.com or call us to schedule today.