About Carpal Tunnel Syndrome (CTS)
CTS is a caused by the compression of the median nerve within the carpal tunnel, a narrow passageway of ligaments and bones at the base of the hand. This leads to increased pressure, decreased circulation, swelling, and inflammation.
Non-modifiable risk factors are factors that cannot be changed or controlled. Non-modifiable risk factors for CTS include:
- Anatomic abnormalities such as cysts
- Existing systemic diseases like obesity, diabetes, hypothyroidism, and rheumatoid arthritis
- Genetic factors
Modifiable risk factors are factors that can be influenced or changed. Modifiable risk factors for CTS include:
- Repetitive finger and wrist movements
- Occupational mechanical stresses
- Drug and alcohol intake
- Diet
- Exercise
It is always best to consult with a healthcare professional for personalized advice regarding risk factors and prevention strategies.
The most common early symptoms of CTS include:
- Pain or numbness in the fingers, hand, and arm
- Tingling or pins and needles sensation in the hands and fingers
- Weakness in the thumb
- Poor grip resulting in frequently dropping things
As CTS progresses or reaches higher severity, additional symptoms may occur, such as:
- Burning sensation in the fingers
- Problems making a strong fist
- Wrist pain that radiates into the hand or forearm
- Throbbing sensation in hands, wrists, and fingers
- Swollen fingers
- Trouble performing fine motor skills, like buttoning a shirt or working clasps on jewelry
In advanced cases of CTS, there may be wasting (reduced size) of the muscles at the base of the thumb. It's important to note that these symptoms can vary from person to person. If you suspect you may have CTS or are experiencing any of these symptoms, it's best to consult with a doctor for an accurate diagnosis and appropriate treatment.
To diagnose CTS, doctors commonly perform the following examinations, tests, and procedures:
- Medical history: Your doctor will ask about your symptoms and any factors that may contribute to CTS, such as repetitive hand movements or underlying medical conditions.
- Physical examination: Your doctor will assess the sensation, strength, and muscle function in your hand and fingers. They may also check for signs of muscle wasting (reduced size) and arthritis in the wrists.
- Tinel's test: This involves tapping over the median nerve at the wrist to see if it triggers pain, numbness, or tingling in the hand.
- Phalen's maneuver: This test involves flexing the wrists for 30 to 60 seconds to see if it causes pain or discomfort.
- Nerve conduction studies: These tests measure how well electrical signals travel through the median nerve in your wrist. They can help confirm the diagnosis and assess the severity of CTS.
- Electromyography (EMG): This test measures the electrical activity of muscles and can help determine if there is nerve damage associated with CTS.
Additional examinations, tests, and procedures to determine the stage or severity of CTS may include:
- Ultrasound imaging: This can evaluate the shape and size of the median nerve in the carpal tunnel.
- Magnetic resonance imaging (MRI): This imaging technique can provide detailed images of the structures in your wrist and help identify any abnormalities.
- Boston Carpal Tunnel Syndrome Questionnaire (BCTQ): This questionnaire assesses symptom severity and functional status related to CTS.
- Numeric Rating Scale: This scale is used to measure pain intensity associated with CTS.
It's important to note that these tests are used as diagnostic tools, and their results should be interpreted by a healthcare professional.
The goals of treatment for carpal tunnel syndrome are to relieve symptoms and improve hand function. Here are the different types of treatments and how they work towards achieving these goals:
- Medication: Nonsteroidal anti-inflammatory drugs (NSAIDs) and over-the-counter pain relievers can help reduce pain and swelling associated with CTS. They work by reducing inflammation in the wrist.
- Therapies:
- Physical therapy can include exercises to strengthen the muscles in the hand and wrist, as well as stretching exercises to improve flexibility.
- Occupational therapy focuses on modifying activities to reduce strain on the wrist and hand.
- Therapeutic procedures:
- Steroid injections can provide temporary relief by reducing inflammation in the synovial membrane and tendons.
- Miniscalpel-needle (MSN) release, combined with steroid injection, may be more beneficial in treating CTS under ultrasound guidance.
- Health behavior changes: Wearing a wrist splint at night for at least 3 weeks can help keep the wrist in a neutral position, reducing pressure on the median nerve.
- Other treatments: Surgical decompression of the median nerve through a procedure called carpal tunnel release may be recommended for severe or persistent cases that do not respond to other treatments.
Treatment decisions should be personalized based on patient characteristics, goals, concerns, and practical issues. It's important to consult with a healthcare professional about specific medication dosing and potential side effects.