Regional Migratory Osteoporosis - A Rare Cause of Knee Pain (Case Report)
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Updated: Jul 20, 2025

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Published on: March 24, 2023
Sidra Moiyad1, Edward Barui1, Christopher Wall1
1Department of Orthopaedics, Toowoomba Hospital, School of Medicine, Rural Clinical School, University of Queensland, Australia.
Introduction:
Regional migratory osteoporosis (RMO) is an unusual phenomenon characterized by migrating arthralgia of the lower limbs due to underlying bone marrow edema.
Case Report:
We discuss a 57-year-old male with a 3-month history of atraumatic medial knee pain. Magnetic resonance imaging demonstrated bone marrow edema of the medial femoral condyle that resolved with rest and simple analgesia, followed by posterolateral knee pain and similar imaging changes in the lateral femoral condyle.
Conclusion:
Most cases of RMO spontaneously resolve with limitation of weight-bearing and simple analgesia. For recurrent cases, surgical intervention may be required.
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