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OCD in dogs: recognising and treating osteochondritis dissecans
Lameness in a young dog can indicate a developmental disorder of the joint cartilage. In osteochondritis dissecans (OCD), parts of the cartilage can separate from the joint surface and cause pain. The shoulder joint is most commonly affected.
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What is osteochondritis dissecans in dogs?
Osteochondritis dissecans (OCD) is a disease of the joint cartilage that mainly occurs in young dogs of large and giant breeds. It starts with a disturbance of endochondral ossification, the normal process by which growing cartilage is converted into bone. As a result, the joint cartilage can become locally thickened and its nutrient supply impaired. If cracks form in the altered cartilage, parts of it can separate partially or completely from the joint surface. These fragments are also known as cartilage flaps. They can cause inflammation and pain in the affected joint. OCD most commonly occurs in the shoulder joint. Other possible locations are the elbow, stifle (knee) and hock. The first symptoms often appear between four and eight months of age, especially as recurrent or worsening lameness.
At a glance:
- What: a developmental disorder of the joint cartilage with possible separation of a cartilage fragment
- Affected: mainly young dogs of large and giant breeds; males more often
- Joints: especially the shoulder, also the elbow, stifle and hock
- Signs: recurrent lameness, joint pain and restricted mobility
- Diagnosis: orthopaedic examination and imaging, in particular X-rays or CT
- Treatment: depends on the joint, the defect and the symptoms; often arthroscopic removal of the cartilage fragment
In detail
How can I tell if my dog has OCD?
OCD often develops during growth. The symptoms may be subtle at first and worsen over several weeks. Typical signs include:
- Lameness that starts gradually or keeps coming back
- Symptoms that worsen after exercise
- Restricted mobility or a pain response in the affected joint
- Occasionally, swelling of the joint
- With shoulder OCD, forelimb lameness
- In some cases, changes in the same joint on both sides
As similar symptoms can also occur with other orthopaedic developmental disorders, an early veterinary examination is important. Lameness during growth should not simply be dismissed as a passing phase of development.
What causes OCD in dogs?
The development of osteochondritis dissecans is multifactorial, meaning several factors can be involved. Genetic predisposition plays an important role, particularly in large and giant breeds. Rapid growth and an unbalanced supply of energy or minerals can also affect the development of the musculoskeletal system. In puppies of large breeds in particular, attention should therefore be paid to appropriate nutrition and controlled growth. Excessive energy intake and an unsuitable calcium supply can impair normal skeletal development. However, OCD cannot be traced back to a single nutritional or exercise factor.
How is OCD diagnosed in dogs?
Diagnosis begins with an orthopaedic examination, in which the vet assesses the gait, joint mobility and any pain responses. If osteochondritis dissecans is suspected, imaging is used. X-rays can reveal typical changes in the joint surface. Depending on the joint affected and the clinical question, computed tomography (CT) can provide additional information about the location and extent of the defect. As OCD can occur on both sides, it is often advisable to examine the same joint on the other side as well. In selected cases, arthroscopy (keyhole examination of the joint) can be used to assess the joint surface directly and treat it at the same time. Objective gait analysis can additionally document movement abnormalities but does not replace imaging.
How is OCD treated?
Treatment depends on the affected joint, the size and nature of the cartilage defect and the severity of the symptoms. For selected, mild changes, conservative treatment with adapted exercise and pain medication prescribed by a vet may be considered first. If there is an unstable or detached cartilage fragment, surgery is often recommended. The affected cartilage is removed and the defect treated accordingly. Depending on the location, the procedure is performed as open surgery or arthroscopically. This is followed by a controlled increase in exercise and, where appropriate, physiotherapy. The long-term prognosis depends on the affected joint, the extent of cartilage damage and any existing osteoarthritic changes, among other things.
What role does objective gait analysis play in OCD?
Osteochondritis dissecans can change a young dog’s movement pattern. Pain and restricted movement can lead, for example, to a shortened stance phase, altered limb movement or asymmetries between the two sides of the body. With objective gait analysis such as LupoGait, selected temporal and kinematic movement parameters can be recorded and documented. This can reveal abnormalities that may be difficult to judge by visual gait assessment alone. After surgery in particular, repeated gait analysis can help to follow functional changes during rehabilitation. For young dogs, LupoGait Puppy also makes it possible to monitor motor development across several measurements.
American College of Veterinary Surgeons: Osteochondrosis of the Shoulder. acvs.org/small-animal/osteochondrosis-of-the-shoulder (accessed 9 October 2026).
Frequently asked questions
No. OCD of the elbow joint is one of the possible forms of elbow dysplasia. However, OCD can also affect other joints, especially the shoulder.
Reliable prevention is not possible, as genetic factors also play a role. However, appropriate nutrition, controlled growth and age-appropriate exercise support healthy development of the musculoskeletal system.
That depends on the type and extent of the cartilage change. While certain early changes may regress, detached cartilage fragments do not usually reattach on their own. Persistent lameness should therefore be investigated by a vet.
Recognise changes in movement early. Monitor rehabilitation objectively.
OCD can change a dog’s gait even during growth. An early veterinary examination is essential to investigate the cause of the symptoms and start suitable treatment. In addition, objective gait analysis can help to document selected movement parameters and follow functional progress during treatment and rehabilitation.