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Bernese fracture ✅
Fracture of the acetabulum (hip socket). 🦴
Mnemonic
Bern sees the hip socket broken 🏀
Think of acetabulum as the cup of a Bernese cup holding the femoral head.
Key Point:
Often occurs due to high-energy trauma, e.g., dashboard injury in car accidents.
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65. A 28-year-old male sustains a dashboard injury in a car accident. Imaging reveals a fracture of the acetabulum. This type of fracture is also known as:
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POP sets up fast like a ‘pop’ of gypsum turning solid! 🎉
Other options:
1. Gypsum: naturally occurring
2. CaSO₄·2H₂O (dihydrate)
3. Quicklime: CaO, used in cement
4. Limewater: Ca(OH)₂ solution, not used as plaster.
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63. An 18-year-old football player is injured during a football game. He is unable to stand up. The physical exam reveals a positive posterior drawer test. X-rays reveal a significant amount of soft tissue swelling but no bone fracture.
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Radial nerve injury → wrist drop
Median nerve injury → ape hand
Peroneal nerve injury → foot drop
Mnemonic:
“RUMF” – Radial → Wrist drop, Ulnar → Claw, Median → Ape hand, Fibular → Foot drop 🖐️🦶
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Ulnar nerve → claw hand ✅
Radial nerve → wrist drop ✅
Femoral nerve → quadriceps weakness ✅
Mnemonic for upper limb nerves:
“MURD” – Median → Ape hand, Ulnar → Claw, Radial → Wrist drop
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Earliest sign of compartment syndrome is pain out of proportion to injury, especially pain on passive stretch of the muscles within the compartment.
Paresthesia → appears later
Pulselessness → very late sign, poor indicator
Paralysis → very late, indicates severe ischemia
Mnemonic:
Pain first, everything else comes last! ⚡🖐️
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58. A 3-year-old child presents with tense swelling in the left hand, suspecting compartment syndrome. Earliest clinical presentation:
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