Prognosis:

There are several factors that prevent a favorable prognosis in this case. Since this is a 
delayed union fracture with a large fracture gap, new bone formation has already 
occurred in abnormal places due to incorrect positioning of the 2 metacarpal parts by the 
splint. The extensive bony calluses may complicate proper reduction of the bone. The 
presence of a bacterial infection with accompanying osteomyelitis at the fracture site will 
impair healing and may compromise vascular supply in the future. Osteomyelitis itself 
indicates a guarded prognosis for this calf. The presence of large calluses at each of the 
fracture ends suggests, however, that blood supply is adequate at this point. A 
disadvantage to the use of closed reduction external fixation is that alignment of the 
fractured pieces may be poor. Poor alignment would require the fixator to provide 
adequate immobilization in order for healing to occur at all.

The young age of the calf is advantageous because of the increased number of 
osteoprogenitor cells present for new bone formation. The location of the fracture does 
not involve the physis, which would have led to serious growth abnormalities. If the use 
of this animal is intended to be for artificial insemination, a ÒweakÓ front limb may not be 
much of a hindrance. Conversely, this type of injury may impair the natural breeding 
abilities of the bull. Front limb abnormalities have a greater potential for healing as 
opposed to hind limb fractures. 

The overall prognosis, considering all factors, is guarded. Proper alignment of the 
metacarpal bone upon external fixation is the most critical part of the process. If proper 
alignment of the fracture is attained, the prognosis improves significantly.