Hi Rich,
I never heard of it before you just mentioned it. However, I Googled it and came up with the following:
Rapidly growing large breed dogs
Two to six months of age is most common
Typical breeds affected
Great Danes
Boxers
German shepherds
Weimaraners
Clinical signs
Fever, anorexia, depression
Lameness may vary from mild to severe
Reluctance to stand if multiple limbs affected
Lameness may be episodic and most dogs recover after one episode
Bones affected
End (metaphyseal regions) of long bones (fore limbs more common than hind limbs)
ribs - uncommon
jaw - uncommon
bones of the paw (metacarpals) - uncommon
Affected bones are very painful to touch
Swelling and heat are commonly present over the affected bones
Other signs:
diarrhea, discharge from the eyes, tonsillitis, thickening of the foot pads, pneumonia, and abnormal development of the enamel of the teeth
Cause
Currently unknown
Proposed causes
distemper virus infection
vaccination with distemper virus
bacterial infection
other viral infection
Vitamin C deficiency is not likely as dogs make this vitamin in their liver
Treatment
This is a self-limiting disease which can last a few weeks
Treatment is largely supportive
Intravenous fluid therapy
Pain medications
Anti-inflammatory medications
Antibiotics if bacterial infection is suspected
Dogs that are severely affected should be euthanatized
Prognosis
Prognosis is variable
Dogs having mild disease usually have a good prognosis
Dogs having severe disease have a poor prognosis
Permanent skeletal deformity can occur
Dogs usually do not die of the disease rather are euthanatized if recovery is poor or if clinical signs are severe
Recurrence can be a problem until the dog reaches maturity