About Stenosing Tenosynovitis (Trigger Finger)
Stenosing tenosynovitis (STS) is a condition where long-term inflammation happens because of constant rubbing or friction in the finger. The exact causes of STS are not always known, but there are several factors that can contribute to its development. These include:
- Mechanical friction: Repetitive movements or overuse of the affected tendons can lead to irritation and inflammation of the protective covering around the tendons (the synovial sheath).
- Decreased blood supply: As a person ages, the blood supply to the tendons decreases, making them more prone to injury and inflammation.
Non-modifiable risk factors for STS, which are factors that cannot be controlled to reduce the risk of developing the condition, include:
- Age: STS occurs more frequently in middle-aged or older adults due to age-related changes in the tendons
- Sex: Some studies suggest that women may be more prone to developing STS than men
- Family history: Having a family history of STS or other related conditions may increase the risk
Modifiable risk factors are risk factors that can be changed or influenced. Modifiable risk factors for STS include:
- Overuse: Engaging in repetitive activities that strain the affected tendons, such as excessive typing or gripping, can increase the risk of STS.
- Systemic diseases: Certain conditions like rheumatoid arthritis (RA) and diabetes are associated with an increased risk of developing STS.
- Autoimmune factors: Autoimmune conditions like RA can lead to inflammation of the synovium and increase the risk of STS.
It's important to note that while these risk factors may contribute to the development of STS, they do not guarantee its occurrence. If you have concerns about STS or any symptoms related to it, it is advisable to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.
Common early symptoms of stenosing tenosynovitis include:
- A digit, usually a finger, becoming locked in a bent position
- A popping or catching feeling when bending the affected digit
- Pain when straightening or bending the affected digit joint
- A sensitive or painful lump at the base of the affected digit
- Stiffness in the joint, especially upon waking, which may ease throughout the day
As stenosing tenosynovitis progresses or becomes more severe, additional symptoms may occur. These can include:
- Visible contracture deformities, where a person cannot straighten one or more fingers
- Inability to relax the tendons
- Swelling of the affected tendon sheaths
- Palpable or visible swelling due to fluid accumulation
- Nodules and deposits accompanying inflammation, especially in cases of rheumatoid arthritis (RA)
It's important to note that these symptoms can vary depending on the cause and extent of the injury. If you experience any of these symptoms, it's advisable to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.
To diagnose stenosing tenosynovitis, doctors commonly perform the following examinations, tests, and procedures:
- Physical exam: A doctor will conduct a physical examination to assess the affected area and look for signs of inflammation or tenderness.
- Finkelstein's test: This test involves bending the wrist towards the little finger while the thumb is tucked into the palm. If this movement causes pain on the thumb side of the wrist, it may indicate stenosing tenosynovitis.
- Imaging studies: Doctors may suggest imaging studies such as X-rays or ultrasound to visualize the affected area and assess any structural changes or abnormalities.
- Lab tests: Blood tests may be ordered to check for markers of inflammation or other underlying conditions that could contribute to stenosing tenosynovitis.
It's important to consult with a healthcare professional who can evaluate your specific situation and recommend the most appropriate examinations, tests, and procedures for an accurate diagnosis and assessment of stenosing tenosynovitis.
The goals of treatment for stenosing tenosynovitis are to control inflammation, relieve pain, restore range of motion, and improve quality of life. Here are the recommended treatments and how they work:
- Medications:
- Nonsteroidal anti-inflammatory drugs (NSAIDs): These medications help reduce inflammation and relieve pain.
- Antibiotics: If a bacterial infection is the cause, antibiotics may be prescribed.
- Therapies:
- Physical therapy: This involves exercises to improve range of motion and strength in the affected area.
- Splints or braces: Wearing these can help rest and support the affected area.
- Therapeutic procedures:
- Steroid injections: These injections deliver medication directly to the affected area to reduce swelling and pain.
- Surgical procedures: In cases where non-surgical treatments fail, surgery may be considered. This can involve cutting or removing tissue to relieve pressure on the tendon.
- Self-care and health behavior changes:
- Resting the affected area: Taking breaks from activities that worsen symptoms can help in healing.
- Making ergonomic changes: Modifying workplace setup or using ergonomic tools can reduce strain on the affected area.
These treatments aim to reduce inflammation, alleviate pain, improve range of motion, and enhance overall function. However, it's important to consult with a healthcare professional for personalized advice.
Medication dosing may be affected by various factors, so it's crucial to discuss this with your healthcare provider. Side effects can occur, so it's essential to read the information provided with your medication or consult your healthcare professional for side effect information.