Trigger Finger

Trigger finger, also known as stenosing tenosynovitis, occurs when the tendon that bends your finger or thumb becomes irritated and has difficulty gliding smoothly through its surrounding sheath. As the tendon thickens or the sheath narrows, the finger may catch, click, or lock during movement—similar to a sword sticking in its sheath. Symptoms often include stiffness, discomfort, and a popping sensation, particularly in the morning or after periods of rest.

Trigger finger is more common in people who perform repetitive gripping or forceful hand activities and occurs more frequently in women and individuals with diabetes. The thumb and ring finger are most affected, though any finger can be involved. Early symptoms may begin as mild catching without pain and gradually progress to painful snapping or locking if left unaddressed.

Conservative care is often effective in managing trigger finger, especially when started early. Treatment focuses on reducing irritation to the tendon, improving movement, and minimizing strain. Temporary activity modification, hands-on care, and specific exercises may be recommended. In more persistent or severe cases, additional medical interventions such as corticosteroid injections or surgical release may be considered.

Understanding Trigger Finger

When finger movement becomes painful, stiff, or stuck

If you’ve noticed a finger or thumb catching, clicking, or locking when you try to move it, you may be experiencing trigger finger. For some people, this starts as a mild annoyance that’s worse in the morning. For others, it can progress to painful snapping or difficulty straightening the finger altogether.

At Trenton Integrative Health Centre, we often see patients who are concerned about losing hand function or worried that surgery is inevitable. The good news is that many cases respond well to early, conservative care.

What Is Trigger Finger?

Trigger finger occurs when a tendon that bends your finger becomes irritated as it passes through a narrow tunnel (called a tendon sheath). Normally, the tendon glides smoothly as you move your finger. When irritation develops, the tendon may thicken or swell, making movement less smooth.

As a result, the finger may:

• Catch or click during movement
• Feel stiff, especially after rest
• Lock in a bent position before suddenly releasing
• Become painful as symptoms progress

The thumb and ring finger are most affected, but trigger finger can occur in any digit.

Why Does Trigger Finger Develop?

Trigger finger is often related to repetitive or forceful hand use, particularly activities involving sustained gripping. Contributing factors may include:

• Repetitive hand or finger movements
• Forceful gripping or tool use
• Prolonged hand strain
• Diabetes or other metabolic conditions
• Hormonal changes

In many cases, symptoms develop gradually rather than from a single injury.

Common Symptoms

Symptoms may vary in severity and can include:

• Finger stiffness, especially in the morning
• Clicking or popping with movement
• Pain at the base of the finger or thumb
• A finger that locks or becomes difficult to straighten

Early symptoms are often mild, but without appropriate care, trigger finger can become more limiting over time.

How Trigger Finger Is Managed at TIHC

Care at Trenton Integrative Health Centre focuses on reducing irritation, restoring smooth movement, and helping you protect hand function. Treatment may include:

• Hands-on manual therapy to reduce tissue tension
• Education around activity modification to reduce strain
• Guidance on exercises or movement strategies when appropriate
• Collaborative discussion around next steps if symptoms persist

For some individuals, temporarily reducing repetitive gripping or forceful hand activities can make a meaningful difference.

When Additional Care May Be Needed

While many cases improve with conservative care, more persistent or severe symptoms may require additional medical options. These can include corticosteroid injections or, in some cases, a minor surgical procedure to release the tendon sheath. If needed, your care team can help guide you through appropriate referrals and decision-making.

What to Expect

Trigger finger often improves when contributing factors are addressed early. Recovery timelines vary, but many people experience reduced catching, improved comfort, and better hand function with appropriate care.