OCD - Osteochondritis Dissecans of the Ankle November 24,...

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Osteochondritis Dissecans of the Ankle November 24, 2003 Dr. N.C. Stone
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Introduction Incidence and Presentation Etiology and Mechanism of Injury Pathoanatomy Classification Imaging Treatment and Results
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Incidence and Presentation Osteochondral fracture of the Talar Dome Males avg 25 years Presents with ankle sprain Initially missed (75%) 2-6% of all ankle sprains
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Incidence and Presentation “ankle sprain not improving” Stiffness, pain, effusion Localized tenderness Locking if loose fragment
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Etiology and Mechanism of Injury Inversion injury Lateral lesion, dorsiflexion, impacts and shears against fibula Medial lesion, plantar flexed, posterior tibial plafond
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Pathoanatomy Once thought to be non-traumatic/AVN Most agree now is traumatic Osteochondral fragment is disrupted If stable, new capillaries my cross fracture and revascularize fragment If not stable or displaced, AVN and fragmentation
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Classification Burndt and Hardy (1959) Many new MRI classifications
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OCD - Osteochondritis Dissecans of the Ankle November 24,...

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