Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooTrigger Finger

Elbow, Wrist & Hand

What It Is

Trigger finger limits movement in the finger. The finger or thumb can get stuck in a bent position, and you may feel a click or pop as it straightens (NHS, 2025). This condition affects the tendons in the thumbs or fingers.

The flexor tendon (the tendon that bends the finger) can become irritated as it slides through the tendon sheath tunnel. As it becomes more irritated, it can thicken and form a nodule (lump), which makes it harder for it to pass through the tunnel (AAOS, n.d.).

The tendon sheath can also thicken, making the tunnel opening smaller. The tendon then becomes momentarily stuck at the mouth of the tunnel when you try to straighten your finger. You might notice a pop as the tendon slips through the tight area and the finger shoots straight.

You may be more likely to get trigger finger if you are over 40, or have diabetes or rheumatoid arthritis (NHS, 2025).

Trigger Finger Anatomy

The fingers each have three bones, while the thumb has only two. At each joint, the bones are held in place by ligaments. Muscles in the forearm and hand turn into tendons, which attach the muscles to the finger bones. The muscles move the fingers by pulling on the tendons. The finger bones are attached to the five metacarpal bones that make up the palm of the hand.

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

Book a session

At Fearless Heart, 25 Dupont St E in Uptown Waterloo, or as a home visit across Kitchener–Waterloo.