Review Question - QID 6078

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Congenital Vertical Talus QID: 6078 (SAE07PE.18)

QID 6078 (Type "6078" in App Search)

Figures 8a and 8b show the clinical photograph and radiograph of a 4-month-old infant who has a left foot deformity. Examination reveals that the foot deformity is an isolated entity, and the infant has no known neuromuscular conditions or genetic syndromes. Which of the following studies will best confirm the diagnosis?

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MRI of the foot

19/621

Static ultrasound examination of the foot in dorsiflexion

28/621

Lateral radiograph of the foot in maximum plantar flexion

71%

438/621

Lateral radiograph of the foot in maximum dorsiflexion

19%

119/621

CT of the foot

13/621

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The clinical photograph shows a rocker-bottom deformity, and the lateral radiograph suggests a congenital vertical talus deformity. A lateral radiograph of the foot in maximum plantar flexion is needed to demonstrate the fixed position of the deformity with malalignment of the talar-metatarsal axis. A fixed dislocation of the navicular on the talus differentiates a congenital vertical talus from the oblique talus with talonavicular subluxation.