Clinical Signs of Hip Dysplasia
Canine hip dysplasia (CHD) in its severest form can be diagnosed by clinical signs, but it usually requires radiographic evidence of hip joint laxity and/or the appearance of osteoarthritis (OA) to arrive at a definitive diagnosis.
There is an acute and a severe form of CHD. An affected dog may have one or any combination of the following clinical signs:
Severe (Acute) Phase
- Presentation at five to 12 months of age,
- Overt pain, lameness, and functional deficits (low exercise tolerance, reluctance to climb stairs) and
- Other signs: audible "click" when walking, increased intertrochanteric width ("points of hips" are wider than normal), thigh muscle atrophy.
Mild (Chronic) Form
- Clinical signs ranging from none to mild,
- Mild discomfort and stiffness in geriatric years and
- Possible pain and crepitus on range of motion.
Clinical signs by themselves do not necessarily mean that a dog has hip dysplasia, other conditions of the hip can mimic CHD. A radiograph is essential for a more accurate assessment of the dog's hip joint integrity.