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16 Cards in this Set
- Front
- Back
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On computed tomography (CT) studies of the ankle, what two features have Fibula further posterior than average been associated with ankle instability?
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Hindfoot varus
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Of the lateral ankle ligaments, which is the weakest?
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ATFL
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What two ligaments
demonstrate inflammatory changes with repeated sprains? |
AIT FL
Deltoid |
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What two changes are seen in the deltoid ligament?
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Hypertrophy
lmpingement |
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What band of the deltoid is particularly affected by recurrent sprains?
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Tibiotalar band
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What are the two components of operative treatment for hindfoot varus and associated lateral instability?
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Valgus calcaneal osteotomy
Brostrom procedure |
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What is the principal cause of recurrent ankle sprains in dancers?
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Peroneal weakness
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With a syndesmotic injury, is the AITFL or PITFL injured first?
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AITFL
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What clinical exam finding is particularly useful in the diagnosis of a subtle syndesmotic injury?
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Inability to perform a single leg hop
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What radiographic view is best for identifying a syndesmotic injury?
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External rotation stress view
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ln general, what should the weight-bearing status during treatment be?
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Non—weight—bearing
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What is the anticipated time to resolution of an isolated syndesmotic injury?
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Generally twice that of a lateral ankle sprain
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How does the treatment differ in an elite athlete with radiographic syndesmotic diastasis?
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Syndesmotic screw placement preferred
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What is the biomechanical effect of a syndesmotic screw?
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Decreased ankle external rotation
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What is the ideal position for syndesmotic screw placement?
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1.5 to 3 cm proximal to the ankle joint
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With respect to bioabsorbable screws, what is the disadvantage of PGA relative to PLA (polyactide)?
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Increased effusion with PGA (polyglycolide)
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