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
A Tennessee Walking Horse colt one year of age was presented for treatment with a history of lameness on the left front foot. On examination the fetlock joint was found to be held permanently flexed, and a diagnosis of contracted deep flexor tendon was made. It was decided that a tenotomy be performed.
Bregman, C. H.
"Congenital Contracted Deep Flexor Tendon.,"
Iowa State University Veterinarian: Vol. 12
, Article 15.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol12/iss3/15