Ulnar deviation describes a sideways angling of the fingers toward the little-finger side, often seen in longstanding inflammatory arthritis.
People may notice hand pain, swelling, stiffness, weaker grip, and fingers drifting sideways, especially when inflammatory arthritis has been active for a long time.
Imaging helps show how much joint damage, deformity, and alignment change are present and whether there are erosions or advanced arthritis changes.
X-rays help show alignment change, joint damage, and how advanced the deformity is.
Management depends on the underlying arthritis and may include medicines, splinting, hand therapy, or surgery.
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