TOPIC: FOOT & ANKLE
A military recruit presents with insidious onset heel pain, notably exacerbated by mediolateral compression of the calcaneal tuberosity (a positive squeeze test). Initial plain radiographs are entirely negative. What is the most classic morphological orientation of a calcaneal stress fracture when visualized on advanced imaging (MRI or delayed CT)?
A
A vertically or obliquely oriented linear band of sclerosis or marrow edema running perpendicular to the primary trabecular lines in the posterior tuberosity
B
A strictly horizontal radiolucency tracking parallel immediately beneath the posterior subtalar joint facet
C
A coronal fracture line originating directly from the apex of the sinus tarsi and extending medially
D
A longitudinal stress reaction extending from the anterior process distally toward the plantar fascial origin proximally