The hip joint is a ‘ball and socket’ joint, this normally fits together perfectly to enable easy and smooth movement. However, when a dog has hip dysplasia their ball joint (head of the femur) and socket joint (socket of the pelvis) have developed incorrectly and don’t fit together as they should. It may be that the socket is too shallow or the ball is not fully formed or a combination of the two, meaning the joint is too loose. This in turn causes the joint to be unstable and move excessively, leading to pain, swelling and inevitably arthritis. Hip dysplasia can occur in any dog; however it is most commonly seen in larger, pedigree breeds such as Labradors, Rottweilers and German Shepherds although it can also affect smaller dog breeds such as Pugs and French Bulldogs.
Signs and symptoms of Hip Dysplasia
Symptoms of hip dysplasia in dogs usually start while they are growing and can vary depending on severity of the condition. The most common signs of hip dysplasia in dogs are:
- Being reluctant to exercise, or a wobbly or swaying gait
- A bunny-hopping gait (using both hind legs together)
- Stiffness, lameness or limping, particularly in the hind legs
- Difficulty in getting up or lying down, as well as difficulty in going up or down stairs or jumping
- Skinny hips, a sign of a lack of muscle and weakness in the hind quarters
- Pain or sensitivity in the hip area
- Audible clicking or popping sounds in the hip joint