‘Ouch! My Finger!’
Caring & Treating Since 2005
Caring & Treating Since 2005
Trigger finger, also known as stenosing tenosynovitis, is a painful condition which causes catching or locking when bending or straightening the finger.
Usually, the ring finger or thumb is affected. It can affect one or more fingers, and both hands can be involved.
Dop us an email at hello@dtapclinic.com.sg for an appointment with our doctor.
The flexor tendons are long cord-like structures that attach the forearm muscles to the bones of the fingers. These flexor tendons allow the fingers to bend when the muscles contract. The flexor tendons pass through the palm and fingers via a tunnel known as the tendon sheath and allow them to glide smoothly as the fingers bend and straighten.
Along the tendon sheath, there are bands of fibrous tissue called pulleys, which hold the flexor tendons closely to the finger bones. The tendons pass through the pulleys as the finger moves. The pulley at the base of the finger is called the A1 pulley.
Trigger finger occurs when the A1 pulley of the affected finger becomes inflamed or thickened, which can interfere with the normal gliding motion of the tendon through the sheath. Prolonged irritation over time leads to inflammation of the flexor tendon itself and the formation of a nodule. When the finger flexes and the nodule passes through the pulley, there is a sensation of catching or popping.
The factors that may lead to an increased risk of trigger finger include:
Pre-existing medical conditionssuch as diabetes and rheumatoid arthritis
Trigger finger can be diagnosed by your doctor after a detailed history and physical examination of the hand and affected finger.
Usually, no investigations or X-rays are required.
The treatment for trigger finger depends on the severity and include:
If you are experiencing any symptoms, or have any concerns or questions about Trigger Finger, please call or drop us an email at hello@dtapclinic.com.sg for an appointment.
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