Which disorders should be included in the differential diagnoses of osteoarthritis (OA)?

Updated: Oct 12, 2020
  • Author: Carlos J Lozada, MD; Chief Editor: Herbert S Diamond, MD  more...
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The following disorders should also be considered in the differential diagnosis:

  • Crystalline arthropathies (ie, gout and pseudogout)

  • Inflammatory arthritis (eg, rheumatoid arthritis)

  • Seronegative spondyloarthropathies (eg, psoriatic arthritis and reactive arthritis)

  • Septic arthritis or postinfectious arthropathy

  • Fibromyalgia

  • Tendonitis

In patients with knee pain, other disorders to consider in the differential diagnosis are patellofemoral syndrome and prepatellar bursitis.

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