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Case of the Week 330 
What's the most likely diagnosis?
- 41 year-old male with severe knee pain
- Blount's disease
- Patellectomy
- Fong's disease
- Dislocated knee
- Fibular fracture
Additional Images - Frontal view of knee
Answer:
4. Dislocated knee
More (Click Discussion Tab)
Dislocation of the Knee
General Considerations
- Uncommon dislocation
- Most are either anterior or posterior
- Using the position of the tibia as the reference
- Anterior dislocations (most frequent)
- Hyperextension
- Posterior dislocations (second most frequent)
- Force to anterior tibia with knee flexed as in MVC or falls
- Medial, lateral or rotational
- Valgus, varus or rotational forces
- As many as 50% of knee dislocations spontaneously self-reduce
- Can lead to underestimation of damage
This Week
41 year-old male with severe knee pain |
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LearningRadiology.com is an award-winning educational site aimed primarily at medical students and radiology residents-in-training, containing lectures, handouts, images, Cases of the Week, archives of case quizzes, flashcards of differential diagnoses and “most commons” lists, primarily in the areas of chest, GI, cardiac, and bone radiology.
