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Getting the latest healthcare news for you
Synovitis on ultrasound and MRI flags worse hand OA outcomes. A prospective study of 201 patients found that synovitis detected at baseline via ultrasonography or MRI was strongly linked to radiographic worsening in thumb base and finger joints over ~3.4 years. The findings suggest inflammation plays a key role across hand OA subtypes — and that imaging could help identify who's at highest risk.
A prospective Norwegian study (Nor-Hand) found that inflammation visible on ultrasound or MRI at baseline is a strong predictor of structural joint deterioration in hand osteoarthritis (OA). Among 201 adults aged 40–70 with hand OA, those with synovitis at the thumb base (CMC1) and finger (interphalangeal) joints were significantly more likely to show radiographic worsening over a mean follow-up of 3.4 years.
The associations were striking: grade 3 gray-scale synovitis on ultrasound was linked to a 9.3-fold increased risk of progression in CMC1 joints and a 23.4-fold increased risk in interphalangeal joints. MRI-detected synovitis also predicted new erosions in finger joints — a marker of more severe disease.
By the Numbers
Why it matters: These findings reinforce inflammation as a meaningful driver of hand OA progression — not just a bystander. For clinicians, imaging-detected synovitis could become a valuable tool for risk-stratifying patients and potentially guiding anti-inflammatory treatment decisions earlier in the disease course.
