Author: Barrett Richard, MD
Co Author #1: Andrew Porter, DO
Co Author #2: Paul Cleland, MD
Senior Editor: Kristine Karlson, MD, FAMSSM
Editor: Jason Blackham, MD
Patient Presentation:
A 20-year-old male college basketball player presented urgently at the request of his athletic trainer with one week of left knee swelling.
History:
He awoke in the morning with a stiff, painful, and significantly swollen knee with no preceding injury. Symptoms worsened with activity and knee flexion and improved with ice and compression. No other joints were swollen or painful. He denied recent illness, known sexually transmitted infection, fevers, chills, night sweats, erythema, dysuria, and rash. He had no prior left knee injuries or surgeries and no known autoimmune diseases.
Physical Exam:
Knee exam revealed a large effusion with associated warmth but no erythema with medial joint line tenderness, and active flexion was limited to 90 degrees. Testing for ligament and meniscus tears was unremarkable. Ipsilateral hip and ankle range of motion was intact. He was able to bear weight and walk without a limp.
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