Millions of dogs each year are afflicted with canine hip dysplasia, which results in severe osteoarthritis of the hip. Many large-breed dogs demonstrate x-ray evidence of hip dysplasia at a very early age. PennHIP is a not-for-profit program operated by the University of Pennsylvania that works with veterinarians across the country to better evaluate and treat canine hip dysplasia. PennHIP utilizes a multifaceted x-ray technology for hip evaluation, assessing the quality of the hip and measuring the hip joint laxity. PennHIP is extremely accurate in its ability to predict the onset of osteoarthritis.