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Trigger Finger and Trigger Thumb

Trigger Finger and Trigger Thumb is a condition where your fingers and/or thumb will catch or lock into position when you try to bend them. 

Definition of Trigger Finger and Trigger Thumb

The tendons in the finger and thumb go through tunnels called 'tendon sheaths'. Along these sheaths are 'pulleys', which hold the flexor tendons close to the finger bone, and the pulley at the base of the finger is called the A1 pulley.

In Trigger Finger and Trigger Thumb, the A1 pulley becomes inflamed or thickened, and it makes it harder for the tendon to move through the sheath as the finger bends. Over time, nodules may form, further impeding movement, and thus creating a catching or popping motion as the finger moves. 

Trigger Finger

Signs and Symptoms of Trigger Finger and Trigger Thumb

Symptoms and signs of Trigger Finger and Trigger Thumb may include:

  • A bump at the base of the finger or thumb
  • A 'catching' or 'popping' sensation when moving the finger or thumb
  • Pain when trying to straighten the finger or thumb
  • Stiffness in the finger, particularly in the morning
  • Inability to fully flex the finger or thumb

Causes of Trigger Finger and Trigger Thumb

The causes of Trigger Finger and Trigger Thumb are yet unknown. However, there are some risk factors that can increase someone's chance of developing Trigger Finger and Trigger Thumb. These include a history of certain medical conditions, such as diabetes, gout, osteoarthritis and rheumatoid arthritis, and people who have occupations or hobbies that require strenuous, repetitive hand or grasping motions, such as musicians, farmers and industrial workers. Trigger Finger and Trigger Thumb are also more prevalent in people aged between 40 and 60 years of age. 

Statistics and Epidemiology related to Trigger Finger and Trigger Thumb

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How MHC Treatment Options Can Help Trigger Finger and Trigger Thumb

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Shoulder Recovery Program

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