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Panosteitis

Brutus, a seven month old neutered male German Shepard has been favoring different legs for the past week. At first it was his left hind left, and now he is favoring his right fore leg. His energy level is normal as are his appetite and stools.

SIGNALMENT:

Brutus, a seven month old neutered male German Shepard

HISTORY:

For the past week or two Brutus has been favoring different legs. At first it was his left hind left, and now he is favoring his right fore leg. His energy level is normal as are his appetite and stools.

PHYSICAL EXAM:

Temp = 100.1°F
Respiratory Rate: 16 breaths/minute
Heart Rate: 92 beats/minute

Brutus is grade 1/5 lame on his right foreleg. He has good range of motion is all the joints and there are no soft tissue swellings or pain associated with any joints. He shows pain by whimpering when deep digital pressure is applied mid shaft to the humerus bone.

DIFFERENTIAL DIAGNOSIS:

Fractures and ligametous injuries Osteochondritis dissecans Immune Mediated Arthritis Panosteitis

DIAGNOSTIC WORK-UP:

A base line blood panel and radiographs of the right fore humerus were performed.

RESULTS:

There were no abnormalities of his blood work. His radiographs did show any fractures or cartilage defects. We did see increased density of the medullary cavity of the humerus bone.

DIAGNOSIS:

Based on his history, physical exam findings, and tests, a tentative diagnosis of Panosteitis was made.

DISCUSSION:

Panosteitis is a self limiting, painful condition affecting one of more the long bones in young, medium to large breed dogs. German Shepards are at increased risk. Panosteitis is characterized clinically by lameness and radiographically by high density of the marrow cavity.

The etiology of Panosteitis is unknown. Pain may be due to vascular congestion or high intermedullary pressure in the long bones during growth. Symptomatic therapy with nonsteroidal anti-inflammatory drugs to minimize pain and decrease inflammation are used. Symptoms generally don't persist for longer than 2-3 weeks, but reoccurance of clinical signs is common up to 2 years of age.

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