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Anterior Femoral Bow and Possible Effect on the Stifle Joint: A Comparison between Humans and Dogs
(Wiley, 2017) Ocal, M. K.; Sabanci, S. S.; Cobanoglu, M.; Enercan, M.
The aim of the study was to compare the anterior bow of the femur between dogs and humans in terms of the possible impact on the stifle joint. The femoral radiographs obtained retrospectively were used to determine the angles and positions of the anterior bow in both dogs (n = 135) and humans (n = 57). Descriptive statistics and Pearson's correlation analysis were used for the statistical analyses of the variables. The mean anterior bow angle (ABA) was 18.3 +/- 2.02 degrees and 4.88 +/- 1.24 degrees in dogs and humans, respectively. The bow position was at the distal shaft in dogs (64.9 +/- 2.04%) and almost at the midshaft of the bone (46.5 +/- 5.52%) in humans. The ABA was related to the bow position in both humans and dogs. Additionally, the angle correlated with age in humans, while it was correlated with weight and breed in dogs. In conclusion, it is suggested that the anterior bow should be used as a landmark on the femoral axis for the biomechanical research of stifle joint, and dog stifle could be used as a suitable model for human knee in experimental studies for clinicians, while making sure that ethical principles are fully respected.