Hip Dysplasia
The following categories are not eligible for an OFA breed
number:
number:
Hip joint conformation (phenotype) is the radiographic
appearance of the hip joints and is the outcome of interaction
between a dog's hereditary makeup (genotype) and its
environment. Hip joint conformation can be represented as a
range from excellent to very dysplastic and shades in
between these two ends of the spectrum. Traits such as this
are referred to as quantitative characters and are thought to
depend upon the interaction of many genes (polygenic).
Modern breeds of dogs vary widely in body size and shape
and in pelvic conformation. Because of these differences,
OFA classifications are based on comparisons among other
individuals of the same breed and age. Knowledge of a dog's
pelvic phenotype can be a valuable guide for the breeder in
selection against hip dysplasia and understanding a dog's
pelvic phenotype can be a useful means of estimating an
individual dog's potential for an active working life.
appearance of the hip joints and is the outcome of interaction
between a dog's hereditary makeup (genotype) and its
environment. Hip joint conformation can be represented as a
range from excellent to very dysplastic and shades in
between these two ends of the spectrum. Traits such as this
are referred to as quantitative characters and are thought to
depend upon the interaction of many genes (polygenic).
Modern breeds of dogs vary widely in body size and shape
and in pelvic conformation. Because of these differences,
OFA classifications are based on comparisons among other
individuals of the same breed and age. Knowledge of a dog's
pelvic phenotype can be a valuable guide for the breeder in
selection against hip dysplasia and understanding a dog's
pelvic phenotype can be a useful means of estimating an
individual dog's potential for an active working life.
Canine Hip Joint Conformaion
| Bred to hunt lions, it is important for the Rhodesian to have Good Hips. |
| Confirmation is crucial to agility in any dog. |
Consensus
Consensus reports on pelvic radiographs from the OFA
contain information for serious breeders and concerned
owners. The consensus is the result of independent review
by three veterinary radiologists and is reported as one of the
following categories. The first three are considered within
normal radiographic limits for age and breed and are eligible
for assignment of an OFA breed number if the dog was 24
months of age or older at the time of radiograph.
Consensus reports on pelvic radiographs from the OFA
contain information for serious breeders and concerned
owners. The consensus is the result of independent review
by three veterinary radiologists and is reported as one of the
following categories. The first three are considered within
normal radiographic limits for age and breed and are eligible
for assignment of an OFA breed number if the dog was 24
months of age or older at the time of radiograph.
 | Borderline Hip Joint Conformation ~ Marginal hip joint | |
| conformation of indeterminate status with respect to hip dysplasia at this time. A repeat study is recommended in 6-8 months. | ||
| Mild Hip Dysplasia ~ Radiographic evidence of minor | |
| dysplastic change of the hip joints. | ||
| Severe Hip Dysplasia ~ Well defined radiographic | |
| evidence of dysplastic changes of the hip joints. | ||
| Severe Hip Dysplasia ~ Radiographic evidence of | |
| marked dysplastic changes of the hip joints. |
| Excellent Hip Joint Conformation ~ Superior hip joint | |
| conformation as compared with other individuals of the same breed and age. | ||
| Good Hip Joint Conformation ~ Well formed hip joint | |
| conformation as compared with other individuals of the same breed and age. | ||
| Fair Hip Joint Conformation ~ Minor irregularities of | |
| hip joint conformation as compared with other individuals of the same breed and age. |
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