Orthonotes
Orthonotes
by the.bonestories
v3.0 Fusion
v3.0 Fusion
trauma topic hub

Knee Dislocation — Vascular Workup

High-energy injury with high risk of popliteal artery injury (10–40%). Urgent reduction and splinting; check pulses + ABI. If ABI

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High-energy injury with high risk of popliteal artery injury (10–40%). Urgent reduction and splinting; check pulses + ABI. If ABI <0.9 → CTA or formal angiography. Hard signs (pulses absent, expanding hematoma) → immediate exploration. Associated peroneal nerve injury common.
MCQs

High-yield practice questions

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Question 1

What is the most common mechanism of knee dislocation?

Question 2

What is the recommended initial assessment for vascular injury in knee dislocation?

Question 3

In the presence of hard signs of vascular injury in knee dislocation, what is the immediate course of action?

Question 4

What ABI measurement indicates a significant risk for vascular injury in knee dislocation?

Question 5

Which type of knee dislocation carries the highest risk of popliteal artery injury?

Question 6

Which of the following is a hard sign of vascular injury?

Question 7

What is a potential consequence of unrecognized popliteal artery injury following knee dislocation?

Question 8

Which injury is commonly associated with knee dislocation?

Question 9

What is the classification system used to assess ligamentous injuries in knee dislocations?

Question 10

Why is the popliteal artery at risk during knee dislocation?