Golden Mao Changzhi dog hip dysplasia – pug forum – China Animal Husbandry Website – A useful animal husbandry website

Canine Hip Dysplasis, CHD is a serious genetic disease in dogs. Golden hair, pull, German black back and the incidence of Norwegian dogs and Chow Chow dogs are the highest. In Beijing, the clinical cases we have encountered have CHDs with CHDs in the clinical case and black back. This may be due to the lack of understanding of the disease in China, the result of not paying attention, blind breeding in the breeding. Currently in the clinic in the clinical trend.
First, the cause:
The most important thing is genetic factors. The etiology and pathogenesis of CHD are still not very clear. Some people think that CHD is a biomechanical disease (Biomechanical Disease), is due to the rapid growth of the pelvis main muscle group and the rapid growth of the bones, this imbalanced force is forced to tear the hip, and then stimulates a series of changes. Finally, it is characterized by poor development and degenerative joint disease. It is also believed that the shameless or shortened force caused by the femoral head to acetabular, resulting in acetabular edge to produce hair
II. Clinical symptom

CHD pathology is a stock Bone and acetabular discomfort; acetabular shallow, small or increased neck angle, joint slack. Due to the joint slack, it causes excessive friction of femoral head and acetabular back to the acetabular, which is doubled, so that the acetabular back is wear, and the femoral head cartilage is necrotic, and the acetabulum marginal proliferation. At the same time, the joints of the inner synovial fluid increase. Many case hips are present in a semi-dislocation state.
CHD clinical symptoms generally appeared in the age of 4 to 12 months, but there are also a few dogs will appear in the age of 12 to 36 months. Some dogs have CHD but there is no symptoms in the short term. The clinical symptoms of CHD have a large variation range, from very slight uncomfortable lame. Mainly manifested as:
1) Happy, do not want to exercise; especially do not want to go up and down stairs;
2) After laying down;
3) When running
4) When walking when running
4) The buttocks are twisted;
5) Pain when the hip is moved during exercise;
6) Troll the hip joint is extremely sensitive.
Third, diagnosis
For dogs with the above symptoms, or high incidence of dogs should be checked. CHD diagnosisAt the primary means is via X-ray and clinical examination. It is currently the main use of OFA standards and PinhiP evaluation.
(1) According to the OFA standard, the animal anesthesia takes a standard abdominal back position (VD), posterior limbs, tethered, and shooting the hip position. A level of grade standards for hip development is developed by ORTHOPEDIC FOUNDATION for Animals. According to X-ray images, it is divided into 7 different grades, followed by: Normal (Excellent, Good, Fair), Bordline, and Dysplasia (MILD, Moderate, Severe).
1. Very good:
The acetabular, the joint gap between the acetabulum and the femoral head is closely, and the acetabulum is almost included with the entire femoral head.
2. Good:
Acetone contains most of the femoral head. The joint gap is also small, but it is slightly larger than the figure.
3: General:
There is a slight irregular, the hip gap is like the width shown in Fig. 2, and there is a mild joint relaxation. However, the area of ​​the acetabulum still contains femoral head is still large. This situation is in the sand, the lady, and the chow.
4. Normal:
It is difficult to determine which level is represented by bordline between hip development and malfunction. For this case, the hip X-ray film should be taken multiple times when the dog is more than June, and more than 50% of the cases finally found that their hip development is good and reaches the Fair level.
5. Mild development:
is shown as an increase in joint gap, and the femoral head exhibits a semi-dislocation state; acetabular, and only a small portion of the femoral head. If the dog is young (1-2 years old), there is generally no needlestorming lesions. Most dogs will have early arthral inflammatory lesions with age. A small number of cases will be improved, the larger the age, the higher the accuracy of the diagnosis.
6. Moderate hip development:
The joint is in a typical sub-dislocation state. The femoral head is barely located in very shallow acetabular. It is often along the femoral neck and the femoral head with secondary arthritic bone pathogenesis (referred to as removal), and the acetabular lexation is called a bone or bone thorn, and different degrees of small beam-like disease is called hardening. Once there is arthritis, withThe time of launch, the condition will be getting heavier.
7. Severe development:
The acetabular is very shallow, and the femoral head is half dislocation. Along the femoral head and femoral neck and the acetabular joint inflammatory osteoponal hyperplasia have become very serious.
(2) PinhiP evaluation
This program is slightly complex, but the accuracy is higher than the OFA. A value needs to be calculated to determine the degree of relaxation of the joint, and it can also foresee the future development trend.
The above two ways Beijing Bowan Animals Hospital provides testing.
Four, treatment:
Any drug can not be cured for the CHD of the dog. The only solution is surgery. The current surgical treatment method is: pubic molar cutophysi, pelvic three-knife surgery (TPO), femoral head resection (FHE) and total hip joint replacement (TPO) and so on. From the beginning of 2004 to November, Beijing Bo Wang Zhen Hospital has successfully cured a lot of dog’s hip disease.

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