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Osteochondritis Dissecans (OCD)
Sudden forelimb
lameness in juvenile dogs of the larger breeds, including Golden
Retrievers, may be a manifestation of Osteochondritis Dissecans,
which is usually found in shoulder joints, but can also affect the
elbow, hocks and stifles. The disease is most often seen between the
ages of 5-12 months, a time at which the skeletal system is most
susceptible to injury.
The symptom of lameness
(especially after strenuous exercise) is a common finding as is a
refusal to use the affected limb, and painful resistance to full
extension of the forelimb.
X-ray diagnosis is helpful in
severe or long standing cases. Fortunately, most dogs afflicted will
make a functional recovery with rest and restricted exercise, and
some veterinarians have used injections of steroids to shorten the
recovery period. More persistent cases of the disease may require
surgical to remove the bony lesion or pieces of detached cartilage
("joint mice") within the joint capsule. Recuperation following
surgery usually requires rest for 6-8 weeks with restricted leash
walks only.
Although Osteochondritis
Dissecans appears to be more prevalent in some breeds and in some
lines than others, it is thought that this condition can help be
prevented by exercising judgment in the amount of exercise a
juvenile is allowed during this critical period of his development,
as well as not allowing a puppy to become overweight.
Canine Elbow Dysplsia
Elbow Dysplasia is a developmental abnormality in the
elbow joint that that can affect large breed dogs, including Golden
Retrievers. The disease has been diagnosed in dogs ranging in age
from three and a half months to three years with six months the most
frequently reported age of diagnosis.
Elbow Dysplasia is caused by a
failure of the bones involving the elbows of one or both forelegs to
unite and move properly, or by bone fragments within the joint.
Fragments of bones or
cartilage in the elbow joint are abrasive, causing severe
irritation, which results in pain and impairment of the dog's
movement. Signs of the disease vary from slight lameness to refusal
to bear weight on the affected limb. The elbow will be thrown out of
place as the dog walks or runs and the dog will hold its elbow away
from the chest. Severely affected dogs stand with bowed elbow and
have swollen joint with increased joint fluid. The lameness
generally is gradual in appearance, intermittent in nature, and may
become more pronounced after exercise. Affected dogs resent forced
movement of the elbow joint, and another frequent complaint is lack
of drive in gaiting and loss of stamina.
Diagnosis of the condition is
by x-ray. Surgical removal of the bone fragments will relieve the
pain and discomfort, but since the process is degenerative, it may
not be halted. . All aspects of this condition will produce
generative joint disease over a period of time. Permanent or
recurring lameness in the front legs may be the result.
Elbow Dysplasia is thought to
be inherited, and thus prevention is the most important way to deal
with the disease. Concerned breeders try to eliminate the disease
from their line dogs by maintaining accurate records and by not
mating dysplastic dogs. In 1990, the OFA established a registry for
dogs free of elbow dysplasia, in addition to their registration of
dogs free of hip dysplasia.
Canine
Panosteitis
(Growing Pains or Wandering Lameness)
Panosteitis is a disease of unknown origin, which causes
pain and lameness primarily in young growing dogs of the large
breeds. The disease has also been termed Enostosis and Eosinophilic
Panosteitis. Affected dogs are usually in the 5 to 14 month age
range. Male dogs are more commonly affected than female dogs, and
there is tendency for the disease to run in families.
Typical signs of the disease
are a sudden lameness that occurs without a history of trauma,
injury or excessive exercise. The lameness that may affect one or
more legs and shift from limb to limb intermittently over a period
of several weeks. In most cases one or the other front leg is
affected first and then the problem tends to move around, making it
appear that the lameness is shifting from leg to leg. There are
often periods of improvement and worsening of the symptoms in a
cyclic manner. This makes evaluation of treatment difficult since
many dogs will spontaneously recover with or without treatment and
then relapse. Diminished appetite and activity are also common
findings.
As for diagnosis, pain is
usually present if pressure is applied over the long bones, and in
the middle phase of the disease, diagnosis of panosteitis can be
made with x-rays. In fact x-rays are the most reliable means of
differentiating lameness caused by panosteitis from other juvenile
lameness such as Hip Dysplasia, Elbow, Dysplasia or Osteochondritis
Dissecans. With Pano, X-rays usually reveal that the bones have
greater density than is normally found.
In most cases, the worst pain
lasts between one and two months but may persist in a cyclic nature
for up to a year. Pano is self-limiting, meaning that it will
eventually go away, with or without treatment, but analgesic
medications like aspirin can be helpful. In severe cases,
corticosteroids may provide relief. Pain control can go a long way
towards helping your pet feel more comfortable and should be used.
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