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Foot & Ankle
intermediate
X-Type

Subtalar Coalition

Paediatric Foot Conditions

A 13-year-old boy presents with recurrent ankle sprains and progressive hindfoot pain over 2 years. He has limited subtalar motion with a rigid flatfoot deformity. Harris (ski jump) view demonstrates a bony bridge between the middle facet of the talus and calcaneus. CT confirms complete osseous talocalcaneal coalition involving 60% of the posterior facet. Regarding subtalar coalition:

Mark each as TRUE or FALSE

A

Tarsal coalition is an abnormal connection between tarsal bones that may be fibrous (syndesmosis), c...

B

Clinical presentation includes rigid flatfoot (pes planovalgus), limited or absent subtalar motion, ...

C

Tarsal coalition is always osseous; calcaneonavicular is the least common type; talocalcaneal coalit...

D

Imaging includes weight-bearing radiographs (lateral shows talar beaking, C-sign, absent middle face...

E

Treatment begins with conservative measures (orthotics, immobilisation, activity modification); surg...

Answer the questions to see explanations

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