![]() To increase the accuracy of a correct diagnosis, it is recommended to repeat the radiographs at a later date (usually 6 months). There also may be a bony projection present on any of the areas of the hip anatomy illustrated above that can not accurately be assessed as being an abnormal arthritic change or as a normal anatomic variant for that individual dog. There is usually more incongruency present than what occurs in the minor amount found in a fair but there are no arthritic changes present that definitively diagnose the hip joint being dysplastic. ![]() Borderline: there is no clear cut consensus between the radiologists to place the hip into a given category of normal or dysplastic.This can be a normal finding in some breeds however, such as the Chinese Shar Pei, Chow Chow, and Poodle. There may also be slight inward deviation of the weight-bearing surface of the socket (dorsal acetabular rim) causing the socket to appear slightly shallow. This is due to the ball slightly slipping out of the socket causing a minor degree of joint incongruency. The hip joint is wider than a good hip phenotype. ![]() Fair: Assigned where minor irregularities in the hip joint exist.The ball fits well into the socket and good coverage is present. Good: slightly less than superior but a well-formed congruent hip joint is visualized.There is almost complete coverage of the socket over the ball. There is a deep seated ball (femoral head) which fits tightly into a well-formed socket (acetabulum) with minimal joint space. Excellent: This classification is assigned for superior conformation in comparison to other animals of the same age and breed.Radiographs of Borderline, Mild, Moderate and Severely dysplastic hip grades are reviewed by the OFA radiologist and a radiographic report is generated documenting the abnormal radiographic findings. Unless the owner has chosen the open database, dysplastic hip grades are not in the public domain. ![]() This information is accepted by AKC on dogs with permanent identification (tattoo, microchip) and is in the public domain. The hip grades of Excellent, Good and Fair are within normal limits and are given OFA numbers. One radiologist reported Fair, two radiologists reported Mild-the final grade would be Mild.One radiologist reported Excellent, one Good, one Fair-the final grade would be Good.Two radiologists reported Excellent, one Good-the final grade would be Excellent.Once each of the radiologists classifies the hip into one of the 7 phenotypes above, the final hip grade is decided by a consensus of the 3 independent outside evaluations. Those categories are Normal (Excellent, Good, Fair), Borderline, and Dysplastic (Mild, Moderate, Severe). The phenotypic evaluation of hips done by the OFA falls into seven different categories. ![]()
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