Overview of Simple Fracture in Dogs
A simple fracture is a break in the continuity of bone or cartilage with minimal displacement or disruption of the normal structure. The bone is broken into two fragments. Fractures that result in multiple bone fragments are referred to as “comminuted.” Young growing dogs are most commonly affected by simple fractures. The term fracture is the same as a “broken bone”.
Simple fractures usually result from low-grade trauma, such as being stepped on or landing awkwardly during a fall. Dogs with inadequate or inappropriate nutrition may be predisposed to simple fractures because poor bone quality may leave their skeletons prone to minor fractures from injuries that would not normally cause a problem. In older dogs, simple or spiral fractures secondary to minimal trauma like slipping on a floor may suggest underlying weakness in the bone, perhaps a fracture secondary to a bone tumor.
Simple fractures may cause minimal soft tissue swelling at the fracture site. They can produce a non-weight-bearing lameness or, depending on the fracture location, no obvious lameness problems. In some cases, if not addressed, the bone may heal in an abnormal alignment or not heal at all. If the cause of the fracture is underlying metabolic or nutritional bone disease, this must be addressed to prevent subsequent fractures.
What to Watch For
Signs of fractures in dogs may include:
Diagnosis of Simple Fracture in Dogs
A history of trauma may not be obvious, so your veterinarian will carefully question you about the events leading up to the injury. This may include questions about type of diet or the use of dietary supplements.
There may be swelling and pain associated with a fracture, but instability and crunchiness on palpation of the fracture site is uncommon with simple fractures. A leg may be completely non-weight bearing, or in the case of certain pelvic fractures, a dog may use the leg as if nothing has happened.
In most dogs with simple fractures, there are no major life threatening injuries and so most patients are stable at the time of presentation. After a thorough physical examination, other tests may include:
Treatment of Simple Fracture in Dogs
To repair a fracture, the ends of the bone must be opposed and the continuity of the bone restored as close to normal as possible. In the case of simple fractures, this can often be done closed, that is without exposing the bones, using traction and manipulation, trying not to disturb the natural healing processes already underway. Surgically exposing the bones by separating and, if necessary, cutting through muscle to visualize the fracture and to put it back together, (open fracture repair) may be appropriate for simple fractures above the elbow and knee. General anesthesia is necessary to manipulate a fracture.
The fracture must be immobilized to allow it to heal and this can be done in several ways.