Clinical imaging · UKMLA & AKT
Hip fractures (femoral neck and intertrochanteric)
A free high-yield preview for the UKMLA Applied Knowledge Test, covering how to recognise this condition. The full SA Note notes add investigations, management and complications, with practice questions on this topic.
Key high-yield points
- Hip fracture = any fracture of the proximal femur within 5 cm distal to the lesser trochanter
- Intracapsular = proximal to intertrochanteric line; retinacular arteries (branches of medial/lateral circumflex femoral from profunda femoris) travel retrograde up the neck - displacement disrupts them → AVN risk
- Extracapsular (intertrochanteric/subtrochanteric) = blood supply intact, no AVN risk
AVN risk is unique to intracapsular displaced fractures - this single fact drives all surgical decision-making (fixation vs arthroplasty).
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