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Ankle Varus is deformity of the distal tibia. The
deformity appears to be far more common then reported. Ankle varus is far more common then ankle valgus; however, these patients
tend to complain of instability and fibular impingement. Ankle varus needs to be compensated by the subtalar joint everting.
Pain maybe primarily from the subtalar joint versus the ankle.
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Research:
Over 20,000 ankle radiographs were
reviewed. Only mortise views were examined. Talocrural angles and tibial plafond position were compared with the anatomical
axis of the tibia. All varus deformities were recorded that were > 5 degrees off the normal value of 89 degrees.
Results:
One
hundred and thirty eight cases of ankle varus were identified. The varus angulation ranged from 5-17 degrees. The average
was 5.8 degrees. The talocrural angle ranged from 4.7-18.7 degrees with an average of 10.0. The majority of the cases were
xrayed after an ankle sprain. Thirteen patients underwent some form ankle surgery as a result of the condition.
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Extreme example likely due to teenage fracture with premature closure
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Case with early DJD and fibular impingement as a result of the subtalar joint attempting to accomodate
for the deformity
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Ankle DJD and posterior facet narrowing
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Corrective supramalleolar osteotomy of the tibia to correct for the varus
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