Erosive osteoarthritis (EOA) is a form of osteoarthritis where as the name implies, there is an additional erosive / inflammatory component.
There is marked female predilection ( F:M ~ 12:1), typically presenting in the postmenopausal patient. Patients are rheumatoid factor negative.
Clinically the presentation mimics inflammatory arthropathies such as psoriatic arthritis or rheumatoid arthritis. Patients complain of a relatively acute or subacute onset of morning stiffness in the fingers of both hands.
Systemic symptoms are however absent.
Erosive osteoarthritis has a predilection for the the hands. The dominant features are that or osteoarthritis particularly in terms of distribution:
- distal interphalangeal (DIP) joints
- proximal interphalangeal (PIP) joints
- firstcarpometacarpal (CPC) joint
Additional characteristic features include:
- diffuse cartilage space loss
- subchondral erosions (at least two central erosions affecting seperate IP joints); typical central location of the erosions produces the classic "gull wing" appearance
- joint ankylosis
absence of 2
- marginal erosions
- fusiform soft-tissue swelling
Treatment and prognosis
Treatment is conservative, unless joint destruction and/or contractures require surgical arthrodesis, arthroplasty, or tendon repair.
The prognosis is generally good with remission after several years being seen in most patient. The degenerative changes of course remain, and are then merely those of osteoarthritis.
Imaging differential considerations include
- non-erosive osteoarthritis
- rheumatoid arthritis - different joint distribution
- psoriatic arthritis
- for more wider differential refer to - differential diagnosis of erosive arthritis
- 1. Martel W, Stuck KJ, Dworin AM et-al. Erosive osteoarthritis and psoriatic arthritis: a radiologic comparison in the hand, wrist, and foot. AJR Am J Roentgenol. 1980;134 (1): 125-35. AJR Am J Roentgenol (abstract) - Pubmed citation
- 2. Chew FS. Radiology of the hands: review and self-assessment module. AJR Am J Roentgenol. 2005;184 (6): S157-68. AJR Am J Roentgenol (full text) - Pubmed citation
Synonyms & Alternative Spellings
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