Tomlinson James L, Cook James L
Comparative Orthopedic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA.
Vet Surg. 2002 Jul-Aug;31(4):398-403. doi: 10.1053/jvet.2002.33598.
To assess the effect of rotating the acetabulum 20 degrees and 30 degrees on percent coverage (PC) of the femoral head by the acetabulum and Norberg angle (NA) after triple pelvic osteotomy (TPO).
Retrospective study.
Fifty-six client-owned dogs.
PC and NA were measured from preoperative, immediate postoperative, first recheck, and second recheck radiographs to compare the effects of 20 degrees and 30 degrees of rotation of the acetabulum after TPO for treatment of hip dysplasia.
Within the 20 degrees rotation group, PC and NA values were significantly greater at each subsequent evaluation time starting at the preoperative measurement except for NA between the first and second recheck times. Within the 30 degrees rotation group, PC and NA values were significantly greater at each subsequent evaluation time starting at the preoperative measurement except for PC and NA between the first and second recheck times. No significant differences between the 20 degrees and 30 degrees rotation groups were found at any corresponding times for either PC or NA.
Acetabular rotation of 20 degrees provided the same degree of improvement in acetabular femoral head coverage as 30 degrees of rotation after TPO at the immediate postoperative, first recheck, and second recheck evaluation times.
Based on PC and NA, 20 degrees rotation of the acetabulum provides as much benefit as 30 degrees of acetabular rotation when performing a TPO.
评估三联骨盆截骨术（TPO）后将髋臼旋转20度和30度对髋臼覆盖股骨头的百分比（PC）及诺伯格角（NA）的影响。
回顾性研究。
56只客户拥有的犬。
从术前、术后即刻、首次复查和第二次复查的X线片测量PC和NA，以比较TPO治疗髋关节发育不良后髋臼旋转20度和30度的效果。
在20度旋转组中，除首次和第二次复查之间的NA外，从术前测量开始，在每个后续评估时间点，PC和NA值均显著更高。在30度旋转组中，除首次和第二次复查之间的PC和NA外，从术前测量开始，在每个后续评估时间点，PC和NA值均显著更高。在任何相应时间点，20度和30度旋转组之间的PC或NA均未发现显著差异。
在术后即刻、首次复查和第二次复查评估时间点，TPO后髋臼旋转20度与旋转30度在改善髋臼对股骨头的覆盖程度方面效果相同。
基于PC和NA，在进行TPO时，髋臼旋转20度与髋臼旋转30度的益处相同。
