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13253 Anatomy

A 34-year-old woman is admitted to the hospital after a car collision. Physical examination reveals a mallet finger. Which of the following conditions is expected to be present during radiographic examination?

AA lesion of the ulnar nerve at the distal flexor crease of the wrist
BA separation of the extension expansion over the middle interphalangeal joint
CCompression of the deep ulnar nerve by dislocation of the lunate bone
DAvulsion fracture of the dorsum of the distal phalanx
Anatomy
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