Cognitive Dispositions to Respond (CDRs) That May Lead to ...

A 65-year-old previous marathon runner presents with 2 weeks of pain in his right knee that worsens with activity. He reports running approximately 3-5 miles a day and this knee pain is associated with weakness making it impossible to run. Physical exam reveals a mildly swollen, non-erythematous, right knee with point tenderness just inferior to the patella and pain with leg extension. ................
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