Trigger Finger

Symptoms of Trigger Finger

• Pain at the base and palm side of the finger.
• Pain or stiffness is worse in the mornings.
• Tenderness when touching the area.
• A lump called a nodule may be felt at the base of the finger.
• A constantly bent fingertip at rest.
• Difficulty straightening the finger.

Causes

Tenosynovitis is an inflammatory condition of the sheath that surrounds a tendon. The tendon becomes inflamed and thickened. This means that it cannot slide through the tunnel created by the overlying tissues as smoothly as it usually does. Therefore the finger gets stuck in a bent position and may click or lock.

Whilst there is no specific cause of trigger finger, there are a number of factors which may make an individual more prone to developing the condition:

• Females over the age of 40.
• Previous injuries to the finger.
• Repetitive movements of the hands or long periods of gripping.
• Those with rheumatoid arthritis are more at risk.
• Diabetes.
• Carpal tunnel syndrome.
• De Quervains tenosynovitis.
• Dupuytren's contracture.
• Gout.
• Underactive thyroid.

Treatment of a Trigger Finger

• Diagnosis can usually be made via observation and description of the symptoms. However, in some cases an MRI scan may be used.
• It is generally agreed that surgery is the best treatment for trigger finger.
• Conservative treatment may be attempted in minor or early cases.
• This may include rest, ice, anti-inflammatory medication, splints and sometimes a corticosteriod injection.
• Surgery involves a release of the tendon. This means the tissues over the top of the tendon, which form a tunnel through which the tendon passes, are cut to allow the tendon to move more freely.
• It is usually possible to move the finger quite soon after surgery. This helps to prevent it being stiff.
• Rehabilitation involving hand exercises using putty and therapy balls helps maintain full strength and movement.