Finger joint clicking is a common occurrence with several potential causes. The sound you hear is often due to the release of gas bubbles within the joint fluid, a process called cavitation. This is generally harmless. However, clicking can also be a symptom of a more serious condition like trigger finger.
Causes of Clicking Finger Joints
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Cavitation: The most common cause is the formation and subsequent bursting of gas bubbles in the synovial fluid that lubricates your joints. This is often what happens when you crack your knuckles. As noted by Verywell Health and other sources, these bubbles contain nitrogen, oxygen, and carbon dioxide. The sound is the bubble popping. This is generally considered harmless, according to Harvard Health.
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Trigger Finger (Stenosing Tenosynovitis): As explained by the NHS, Cleveland Clinic, Mayo Clinic, and WebMD, trigger finger is a condition affecting the tendons in your finger. The tendons run through a sheath, and if this sheath becomes inflamed, the tendon movement becomes restricted, leading to a snapping or clicking sensation. This can be accompanied by pain and stiffness. The sources mention the ring and middle fingers are often affected.
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Arthritis: According to Cleveland Clinic, arthritis, especially in the hands and fingers, can cause joint clicking. The inflammation and damage associated with arthritis can cause bones to rub against each other, creating a clicking or grinding sound (crepitus).
Identifying the Cause
Determining the cause of your clicking finger joints may require a visit to a doctor or healthcare professional. They can assess your symptoms, perform a physical examination, and potentially order imaging tests to identify the underlying issue.
- If the clicking is painless and occurs only when you actively make your fingers pop or crack, it is likely due to cavitation and is generally harmless.
- If the clicking is accompanied by pain, stiffness, locking of the finger, or difficulty moving the finger, it warrants medical attention. This could indicate trigger finger or arthritis.
Remember that self-treating based on online information can be risky. Always seek professional medical advice.
