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
The superior-anterior type of coxofemoral dislocation represents over ninety per cent of the dislocations in the dogs of this area, and reports from other areas indicate a comparable incidence of that dislocation. For that reason this paper will be confined to a discussion of this group only, permitting the reader to use his own resources on those unusual cases which he will seldom encounter.
Stader, Otto and Slaughenhaupt, R. R.
"Luxations in the Dog,"
Iowa State University Veterinarian: Vol. 4
, Article 3.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol4/iss2/3