Pride Veterinary Referrals, IVC Evidensia, Riverside Road, Derby, DE24 8HX United Kingdom (Camarasa, Vallefuoco); Veterios. C/ Arrastaria, 23. 28022. Madrid, Spain (De Vicente).
Can J Vet Res. 2023 Jul;87(3):191-195.
The objective of this study was to evaluate the position of the patella in relation to the proximal femoral axis in the sagittal plane and to assess its reliability as a surgical landmark for femoral component placement in canine hip replacement. The relationship between the patella and the proximal femoral axis was assessed by defining the proximal patellofemoral angle in medio-lateral radiographic projections with 3 different stifle angles (full flexion, 90°, full extension) in medium to large breed skeletally mature dogs (N = 14). Proximal patellofemoral angle measurements were compared between the 3 different groups of stifle position using ANOVA for statistical analysis. The mean proximal patellofemoral angle measurements were -7.4° (± 1.3°) in the flexion group, -1.6° (± 1.5°) in the 90° group, and 2.1° (± 1.8°) in the extension group. Statistically significant differences were seen in the proximal patellofemoral angle between groups ( ≤ 0.001). These results confirm that position of the patella related to the proximal femoral axis differs depending on the degree of stifle flexion. The degree of stifle flexion should be considered in the preoperative planning and intraoperatively when using the patella as a surgical landmark in the sagittal plane for femoral canal broaching in canine total hip replacement.
本研究旨在评估髌骨在矢状面相对于股骨近端轴的位置，并评估其作为犬全髋关节置换术中股骨通道扩孔的矢状面手术标志的可靠性。通过在中大型骨骼成熟犬（N=14）的中侧位 X 线片上定义近侧髌股角，评估髌骨与股骨近端轴的关系。使用 ANOVA 对 3 组不同的膝关节位置进行统计分析，比较 3 组近侧髌股角的测量值。在屈曲组中，近侧髌股角的平均测量值为-7.4°（±1.3°），在 90°组中为-1.6°（±1.5°），在伸展组中为 2.1°（±1.8°）。组间近侧髌股角差异具有统计学意义（≤0.001）。这些结果证实，髌骨相对于股骨近端轴的位置取决于膝关节的屈曲程度。在术前规划和术中使用髌骨作为犬全髋关节置换术中股骨通道扩孔的矢状面手术标志时，应考虑膝关节的屈曲程度。
