Pain on the pinky side (ulnar side) of your wrist when twisting can stem from several causes, generally related to structures on that side of the wrist that become irritated or injured.
Here's a breakdown of the potential reasons:
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Triangular Fibrocartilage Complex (TFCC) Tear: This is perhaps the most common cause. The TFCC is a cartilage structure that stabilizes the wrist and cushions the bones. Twisting motions can put stress on it, leading to pain if it's torn. Think of it as the meniscus of the wrist.
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Distal Radioulnar Joint (DRUJ) Problems: The DRUJ is located where the radius and ulna (the two bones in your forearm) meet near the wrist. Instability or arthritis in this joint can cause pain with twisting movements. Sometimes this pain isn't directly in the wrist, but a bit above it in the forearm.
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Ulnar Impaction Syndrome: This occurs when the ulna (the bone on the pinky side) is longer than the radius. This can lead to the ulna "impacting" against the wrist bones, causing pain, especially with twisting and gripping.
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Tendonitis (Extensor Carpi Ulnaris or Flexor Carpi Ulnaris): These tendons run along the pinky side of the wrist and are responsible for wrist movement. Overuse or repetitive motions can inflame them, resulting in pain with twisting.
Here's a table summarizing these potential causes:
| Condition | Description | Symptoms |
|---|---|---|
| TFCC Tear | Damage to the cartilage cushioning and stabilizing the wrist. | Pain on the ulnar side of the wrist, clicking, popping, weakness. |
| DRUJ Problems | Instability or arthritis in the joint where the radius and ulna meet near the wrist. | Pain with rotation of the forearm, clicking, instability. |
| Ulnar Impaction Syndrome | Ulna bone is longer than radius, causing it to press against wrist bones. | Pain on the ulnar side of the wrist, especially with gripping and twisting. |
| Tendonitis (ECU or FCU) | Inflammation of the tendons on the pinky side of the wrist. | Pain with wrist movement, tenderness to the touch. |
What to Do:
If you are experiencing persistent wrist pain, it's important to see a doctor. They can properly diagnose the cause of your pain and recommend the appropriate treatment. Treatments may include:
- Rest and immobilization (using a splint or brace).
- Ice or heat therapy.
- Pain medication (over-the-counter or prescription).
- Physical therapy.
- Injections (corticosteroids).
- Surgery (in severe cases).
Ignoring the pain could lead to chronic problems. Don't delay seeking medical advice.
