As you can see, the distraction view shows much more laxity in the hips than the standard hip-extended view. Standard hip-extended view: Evaluates for any OA changes.Compression view: Obtains hip joint congruity readings.Distraction view: Allows for quantitative measurements of hip joint laxity.PennHIP consists of three separate radiographs: This allows for a calculation of a distraction index (DI), which is a measure of hip laxity. PennHIP views place a standard force on the hips to see how far the ball comes out of the socket (laxity of the joint). It accurately predicts whether a puppy will develop hip dysplasia. PennHIP measures the actual amount of passive laxity in the hip joint. The most accurate X-ray method is the PennHIP distraction method. CHD is diagnosed by a combination of your veterinarian’s physical exam findings and radiographs. Rapid weight gain and growth through excessive nutritional intake can further the development of CHD. The cause of CHD is multifactorial however, heredity (genetics) is the single biggest risk factor. Joint laxity is the primary factor that predisposes a dog to the development of hip dysplasia. The hip joint is a ball-and-socket joint in which the ball should fit snuggly into the socket when one has abnormal movement due to continual laxity, the long-term result is OA of the joint. Developmental dysplasia of the hip (DDH) is a spectrum of anatomical abnormalities of the hip joint in which the femoral head has an abnormal relationship with the acetabulum. Hip joint laxity is responsible for potential clinical signs of hip pain, leading to joint changes and thus osteoarthritis (OA). Canine hip dysplasia (CHD) is a condition that emerges as dogs grow and results in the instability or loose fitting (laxity) of the hip joint. PennHIP X-rays and the Benefits of Determining Canine Hip Dysplasia (CHD) Risk.
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