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OrthoVellum

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Foot & Ankle
intermediate
X-Type

Subtalar Instability

Hindfoot Disorders

A 28-year-old footballer presents with persistent hindfoot instability 18 months after a severe ankle sprain. He describes a sensation of the hindfoot "giving way" on uneven surfaces, distinct from typical ankle sprains. Examination reveals a positive talar tilt test and increased subtalar motion compared to the contralateral side. Stress radiographs show increased subtalar tilt. Previous lateral ankle ligament reconstruction has not resolved his symptoms. Regarding subtalar instability:

Mark each as TRUE or FALSE

A

Subtalar instability results from injury to the subtalar ligaments, particularly the calcaneofibular...

B

Clinical features include hindfoot giving way on uneven terrain, sinus tarsi pain, difficulty on une...

C

Subtalar instability affects the talonavicular joint; the ATFL is the primary stabilizer of the subt...

D

Imaging includes stress radiographs (Broden view showing subtalar tilt greater than 5-10 degrees mor...

E

Treatment begins with proprioceptive training, bracing, and activity modification; surgical options ...

Answer the questions to see explanations

Click T (True) or F (False) for each option