What's the most likely diagnosis?
- 27 year-old male with knee pain
- Bi-partite patella
- Baker's cyst
- Femoral fracture
- Patellar fracture
- Gout
Answer:
4. Patellar fracture
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Patellar Fracture
General Considerations
- The patella is the body’s largest sesamoid and lies in the quadriceps tendon
- Upper pole is site of attachment of the quadriceps tendon
- This tendon is comprised of components from the
- Superficial rectus femoris
- Vastus intermedius muscle
- Vastus medialis and lateralis
- Lower pole is the site of attachment of the patellar ligament which inserts at the tibial tubercle
- Portions of the rectus femoris course over surface of patella
- Normal position of the patella
- The inferior border is about the height of one patella above the knee joint space with the knee slightly flexed
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