Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
An eleven-year-old quarter horse gelding was examined for a lameness of several weeks' duration in the left foreleg. Four months previously an imbedded nail had been removed from the hoof. Examination revealed that the hoof was very sensitive to hoof testers at the toe area, but no sinus tract selling could be seen in the sole. Radiographs of the foot were taken - what is your diagnosis from examination of this radiograph?
"What's Your Radiographic Diagnosis?,"
Iowa State University Veterinarian: Vol. 36
, Article 10.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol36/iss2/10