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The information on this page is for educational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment.

Always seek the advice of your doctor or other qualified health professional with any questions you may have regarding a medical condition.

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Wrist Arthritis (Pinky Side of Wrist)

DRUJ arthritis is wear-and-tear or post-injury arthritis affecting the joint where the two forearm bones meet at the wrist (on the pinky side) - this joint allows you to rotate your forearm (turn palm up and down) - arthritis here causes pain on the pinky side of the wrist, difficulty turning doorknobs or using screwdrivers, clicking or grinding with forearm rotation, and swelling - treatment ranges from splints and anti-inflammatory medication to surgery (joint replacement or salvage procedures), with 70-80% achieving good pain relief and functional improvement

📅Last reviewed: January 2025🏥Bones & Joints

📖What is Wrist Arthritis (Pinky Side of Wrist)?

DRUJ arthritis is wear-and-tear or post-injury arthritis affecting the joint where the two forearm bones meet at the wrist (on the pinky side) - this joint allows you to rotate your forearm (turn palm up and down) - arthritis here causes pain on the pinky side of the wrist, difficulty turning doorknobs or using screwdrivers, clicking or grinding with forearm rotation, and swelling - treatment ranges from splints and anti-inflammatory medication to surgery (joint replacement or salvage procedures), with 70-80% achieving good pain relief and functional improvement

🔬What Causes It?

  • Previous wrist fracture (especially radius fracture that healed with shortening or malunion)
  • Wear and tear arthritis (osteoarthritis) from aging or repetitive use
  • Inflammatory arthritis (rheumatoid arthritis commonly affects this joint)
  • Ligament injuries (TFCC tear) leading to joint instability and arthritis over time
  • Congenital abnormalities (one forearm bone longer than the other causing abnormal joint stress)

⚠️Risk Factors

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You may be at higher risk if:

  • Previous distal radius fracture (wrist fracture) - 20-30% develop DRUJ arthritis if fracture healed with shortening
  • Repetitive forearm rotation in work or sports (mechanics, carpenters, tennis players)
  • Rheumatoid arthritis or other inflammatory arthritis
  • Age over 50 years (osteoarthritis)
  • Smoking (impairs cartilage health)
  • Previous DRUJ dislocation or TFCC tear

🛡️Prevention

  • Proper treatment of wrist fractures (ensure good alignment to prevent DRUJ arthritis later)
  • Ergonomic modifications at work (minimize repetitive forearm rotation, use power tools instead of manual screwdrivers)
  • Strengthening exercises for wrist and forearm muscles (improves joint stability)
  • Early treatment of TFCC tears and ligament injuries (prevents progression to arthritis)
  • Managing inflammatory arthritis (rheumatoid arthritis) with medications to protect joints
  • Avoiding smoking (protects cartilage health)