犬肘部發育不良：原因、症狀和治療
肘部發育不良是大型犬常見的發育性肘關節問題。了解診斷和治療方法。
Elbow dysplasia is a developmental abnormality of the elbow joint that causes pain, lameness, and arthritis. It's one of the leading causes of front limb lameness in large and giant breed dogs. Genetics play a major role, but nutrition and growth rate also influence severity. RVC offers diagnostic imaging and treatment options. Call +853 6677 6611.
- Elbow dysplasia includes several developmental abnormalities of the elbow joint
- Large and giant breeds are most commonly affected
- Symptoms usually appear between 4-10 months of age
- X-rays and CT are needed for definitive diagnosis
- Treatment includes surgery, medical management, or both
- Weight control and joint supplements help manage arthritis long-term
What is Elbow Dysplasia?
Elbow dysplasia is an umbrella term for developmental abnormalities of the elbow joint. Types include: fragmented medial coronoid process (FCP) — a piece of bone breaks off in the joint, osteochondritis dissecans (OCD) — cartilage doesn't form properly, ununited anconeal process (UAP) — a bone fragment doesn't fuse, and elbow incongruity — the joint surfaces don't fit together properly. All types cause abnormal wear, pain, and progressive arthritis.
Affected Breeds
Breeds at highest risk: Labrador Retrievers, Golden Retrievers, German Shepherds, Rottweilers, Bernese Mountain Dogs, Newfoundlands, Saint Bernards, and Mastiffs. Genetics are the primary cause — dogs with elbow dysplasia should not be bred. Rapid growth and overweight puppies have worse outcomes. Feeding large-breed puppy formulas (controlled calcium and calories) may reduce severity.
Diagnosis
Symptoms: front leg lameness (often both legs, making it harder to notice), stiffness after rest, reluctance to exercise, pain when the elbow is flexed or extended, and reduced range of motion. Diagnosis requires X-rays under sedation — specific elbow views show bone abnormalities. CT scans provide the most detailed imaging and are increasingly used for surgical planning. Arthroscopy (camera in the joint) allows direct visualization and simultaneous treatment.
Treatment and Prognosis
Treatment depends on the type and severity. Fragmented coronoid process: arthroscopic removal of the fragment, sometimes with corrective osteotomy. OCD: removal of loose cartilage flaps and microfracture of the bone to stimulate healing. UAP: surgical fixation or removal of the fragment. Elbow incongruity: sliding humeral osteotomy or other corrective surgery. Post-surgery: restricted activity, physical therapy, weight management, and joint supplements. Most dogs improve with treatment but will develop some degree of arthritis over time.
- Front leg lameness in a young large-breed dog
- Stiffness or reluctance to exercise
- Pain when touching or manipulating the elbow
- Limping that worsens after exercise
- Both front legs showing subtle lameness
- Any lameness in a puppy of a predisposed breed
RVC provides orthopedic examinations, X-rays, and referral for advanced surgical treatment. Call +853 6677 6611 for an evaluation.
+853 6677 6611