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Ankle/Foot

  • Tarek M. Hegazi
  • Jim S. Wu
Chapter

Abstract

MRI is the most complete imaging test for assessing abnormalities of the foot and ankle. It provides excellent soft tissue detail to assess the various tendons and ligaments in the foot and ankle; and it has high sensitivity for the detection of bone marrow abnormalities, such as with talar osteochondral lesions or metatarsal stress fractures. Findings on MRI will often be present much earlier than with other imaging modalities. It is best to have one protocol for imaging the ankle and a second protocol to image the forefoot since many of the structures being studied are small and cannot be adequately studied using a large field of view that encompasses both the ankle and foot. Our “ankle” protocol includes the entire ankle and through the base of the metatarsals distally, whereas our “forefoot” protocol includes all the toes through the base of the metatarsals proximally. When evaluating for Morton’s neuroma or plantar fibroma, intravenous gadolinium contrast is helpful, and when evaluating the stability of osteochondral lesions, MR arthrography can be helpful. We present here the most common entities that you are likely to encounter during MRI imaging of the ankle and foot.

Keywords

Metatarsal stress fractures Tarsal coalition Accessory navicular bone Freiberg’s infraction Talar osteochondral lesion Achilles tendinopathy Achilles tendon tear Posterior tibial tendon dysfunction Peroneus brevis tendon tear Plantar fasciitis Lateral collateral ligament complex injury Medial collateral ligament complex injury Deltoid ligament complex Lisfranc ligament injury Plantar plate injuries Posterior ankle impingement Sinus tarsi syndrome Morton’s neuroma Tibial stress fracture 

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Tarek M. Hegazi
    • 1
  • Jim S. Wu
    • 2
  1. 1.Assistant Professor of RadiologyRadiology Residency Program Director, Imam Abdulrahman Bin Faisal UniversityDammamSaudi Arabia
  2. 2.Chief, Musculoskeletal Imaging and InterventionAssociate Professor in Radiology, Harvard Medical School, Beth Israel Deaconess Medical CenterBostonUSA

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