Background: Pathological fractures have been reported in equids with pituitary pars intermedia dysfunction (PPID) but their prevalence and pathogenesis is unknown.
Objectives: To compare: (1) bone mineral density (BMD) in weight bearing and nonweight bearing bones in PPID equids and aged and young PPID controls; and (2) biomechanical properties of the fourth lumbar vertebral body in PPID equids and aged PPID equids.
Study Design: Case-control study: five PPID equids and six aged and four young PPID control horses.