The use of coxofemoral prostheses in dogs has been one of the most preferred and efficient methods to treat coxofemoral dysplasia. Complications are frequently diagnosed by radiology and they are due to either material fabrication or host tissue reaction. Bone remodeling, osteoporosis, fractures and aseptic loosening are the common tissue reactions found in patients that have undergone implantation. This study reviews the different radiographic manifestations against coxofemoral implants and the X-Ray evaluation method in the post operatory period of coxofemoral implanted canine patients.

Symmetry indexes in canine gait have been scarcely reported, and there is a lack of consensus and knowledge on the effect of normalization in the results, especially in the craniocaudal orthogonal. The kinetics of running was analyzed in the running cycle of fifteen mongrel dogs through an amplified force plate, in order to determine the symmetry of gait and symmetry index (SI) under two data standardization systems in normal dogs: normalization by body weight and normalization by the two-dimensional morphometric characteristics of the limbs. Thus, primary dynamic variables of study were obtained, such as the SI in time and momentum to peak force, as well as other secondary variables as a result of the force plate amplification. The values used for each test were used to calculate the mean, standard deviation and coefficient of variation between individuals and among the animals. Variables in the craniocaudal orthogonal were more irregular and asymmetrical than in the vertical orthogonal, and had a lower correlation with body mass normalization. Normalization by body weight showed greater efficacy than that given by the two-dimensional morphometric characteristics of the limbs, ratifying its use in kinetics studies in dogs. It was determined that symmetric indexes should not be inferior to 0.95 and 0.75 in vertical and craniocaudal orthogonal, respectively. Values higher than those described are acceptable for normal canines without orthopedic alterations.