Ottawa Ankle Rules

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Questions and Answers

According to the Ottawa ankle rules, which palpatory finding in the ankle region necessitates an X-ray?

  • Tenderness to palpation over the anterior aspect of the tibia.
  • Tenderness to palpation over the anterior aspect of the distal fibula.
  • Bony tenderness to palpation over the posterior aspect of the distal fibula within the distal six centimeters. (correct)
  • Tenderness to palpation over the medial malleolus.

In the context of the Ottawa ankle rules, what specific location on the foot, when tender to palpation, indicates the need for an X-ray?

  • The base of the fifth metatarsal. (correct)
  • The distal phalanx of the great toe.
  • The cuboid.
  • The calcaneus.

Which scenario, incorporating the Ottawa ankle rules, would necessitate an X-ray of the foot?

  • Ability to bear weight immediately after injury, coupled with tenderness over the calcaneus.
  • Inability to bear weight immediately after injury, combined with tenderness over the navicular. (correct)
  • Inability to bear weight and tenderness over the anterior process of the calcaneus.
  • Ability to bear weight and tenderness over the cuboid.

A patient presents with an ankle injury and can bear weight with some difficulty. Palpation reveals tenderness over the deltoid ligament. According to the Ottawa ankle rules, is an X-ray indicated, and why?

<p>No, because tenderness over the deltoid ligament is not a criterion in the Ottawa ankle rules. (B)</p> Signup and view all the answers

A basketball player injures their ankle during a game. They are unable to bear weight immediately after the injury, but report that they were able to walk on it later. Palpation reveals tenderness over the posterior aspect of the distal tibia. Does this scenario necessitate an X-ray based on the Ottawa ankle rules?

<p>Yes, because the initial inability to bear weight and the tibia tenderness meets Ottawa ankle rules. (B)</p> Signup and view all the answers

According to the Ottawa ankle rules, what is the significance of the 'inability to bear weight' criterion in determining the need for an ankle X-ray?

<p>It refers to the inability to bear weight immediately after the injury and at the time of examination. (A)</p> Signup and view all the answers

A patient reports tenderness to palpation over the anterior aspect of the distal tibia six centimeters from the joint line following an ankle injury, but they are able to bear weight. How do the Ottawa ankle rules guide the decision regarding X-ray necessity?

<p>An X-ray is not indicated because the patient can bear weight and the location of tenderness is incorrect. (B)</p> Signup and view all the answers

How do the Ottawa ankle rules differentiate between the areas of the foot and ankle for which tenderness to palpation would necessitate an X-ray?

<p>The rules specify different bony landmarks on the foot (navicular, base of fifth metatarsal) versus the posterior aspects of the distal tibia and fibula for the ankle. (B)</p> Signup and view all the answers

In applying the Ottawa ankle rules, how does the location of bony tenderness on the distal fibula influence the decision to order an X-ray?

<p>Tenderness on the posterior aspect of the distal fibula within the distal six centimeters from the tip necessitates an X-ray. (D)</p> Signup and view all the answers

What is the combined significance of 'inability to bear weight' and specific palpatory findings in the Ottawa ankle rules?

<p>They must both be present to indicate the necessity for an X-ray. (C)</p> Signup and view all the answers

Flashcards

Ottawa Ankle Rules

Clinical guidelines to determine the necessity of X-rays for ankle injuries.

Inability to bear weight

Inability to bear weight immediately after the injury and in the emergency department.

Distal Fibula Tenderness

Tenderness upon palpation along the posterior edge or tip of the lateral malleolus.

Distal Tibia Tenderness

Tenderness upon palpation along the posterior edge or tip of the medial malleolus.

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Navicular Tenderness

Tenderness upon palpation over the navicular bone.

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Base of 5th Metatarsal Tenderness

Tenderness upon palpation at the base of the fifth metatarsal.

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Study Notes

Ottawa Ankle Rules

  • The Ottawa ankle rules provide guidelines for when to order an X-ray for a patient with an ankle injury

Indications for X-Ray

  • Inability to bear weight
  • Plus palpatory findings

Palpatory Findings for Ankle

  • Bony tenderness to palpation over the posterior aspect of the distal fibula (distal 6 cm)
  • Tenderness of the posterior aspect of the distal tibia (distal 6 cm)

Palpatory Findings for Foot

  • Inability to bear weight
  • Plus tenderness over the navicular
  • Or tenderness at the base of the fifth metatarsal

Summary of Ottawa Ankle Rules

  • X-ray is indicated if there is an inability to bear weight
  • Combined with focal bony tenderness to palpation in the following areas
  • Posterior aspect of the distal fibula
  • Base of the fifth metatarsal
  • Posterior aspect of the distal tibia
  • Navicular

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