What is osteochondritis dissecans in dogs

This process was supervised by ACVS Diplomates, ensuring consistency in training and adherence to high standards. After completing the residency program, the individual passed a rigorous examination. Osteochondrosis occurs commonly in the shoulders of immature, large, and giant-breed dogs.

The lesion usually appears on the caudal back surface of the humeral head Figure 1. Osteochondrosis begins with a failure of immature cartilage to form bone in the humeral head. This failure leads to abnormal cartilage thickening Figure 2.

Increased cartilage thickness may result in malnourished cartilage cells that die. Loss of these cartilage cells deep in the cartilage layers leads to formation of a defect at the junction between cartilage and bone.

Subsequently, normal daily activity may cause fissures in the cartilage that eventually communicate with the joint, forming a cartilage flap Figure 3.

It is with the formation of a flap that osteochondrosis becomes osteochondritis dissecans OCD. OCD is the form of osteochondrosis that is associated with pain and dysfunction. In some cases, the resulting flap occupies as much as half the humeral head. The cartilage flap may completely detach from the underlying bone and become lodged in the back of the joint pouch.

The causes of OCD are multifactorial with genetic and nutritional interactions thought to be the central factors. Therapy can be effective only when applied correctly. Abstract Osteochondritis dissecans OCD is a manifestation of osteochondrosis. Publication types Review. Atrial Fibrillation in Dogs and Cats.

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Portosystemic Shunt in Dogs and Cats. Keep in mind that due to genetic element of this disease, you will need to have your dog neutered or spayed to prevent it from breeding, as the condition is very likely to be passed along.

Home Diseases A-Z. Written by: PetMD Editorial. Published: September 30, Excess Cartilage and Deficient Bone Growth in Dogs Endochondral ossification is a normal bone growth process by which cartilage is replaced by bone in the early development of the fetus.

Symptoms and Types Lameness most common symptom Onset of lameness may be sudden or gradual, and may involve one or more limbs Lameness becomes worse after exercise Unable to bear weight on affected limb Swelling at joints Pain in limb, especially on manipulation of joints involved Wasting of muscles with chronic lameness Causes Unknown Appears to be genetically acquired Disruption in supply of blood to the bone or through the bone Nutritional deficiencies Diagnosis You will need to give a thorough medical history of your dog's health, onset of symptoms, and any information you have about your dog's parentage.

Treatment After establishing the diagnosis, your veterinarian will plan corrective surgery. Living and Management During recovery and healing, activity will need to be restricted and weight control measures undertaken to decrease stress on the affected joints.

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