Department of Trauma and Orthopaedic Surgery, Professorial Unit, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland.
Ir J Med Sci. 2013 Sep;182(3):409-14. doi: 10.1007/s11845-013-0901-6. Epub 2013 Jan 25.
The accuracy and inter-observer reliability (IOR) of acetate templating on hard copy X-rays in 33 primary total hip arthroplasties as measured by consultant and trainee surgeons was analyzed to find out how accurate are junior surgeons undertaking specialty training.
The study was questionnaire-based using a prospective cohort over a 4 weeks period. The Surgeon measurements of acetabular cup, femoral stem and femoral offset sizes were noted following acetate measurements and then compared with the final implant chosen during surgery.
Prediction of sizing to within one size of the final match size was 75% accurate for cup and 91% accurate for femoral stem. Prediction of exact femoral offset sizes was 91% accurate. Templating showed strong IOR between senior consultant surgeon and junior trainee registrar within one size for cup (83%) and stem (100%) and for exact hip offset prediction (92%).
We conclude that acetate templating on hard copy X-rays is beneficial to surgeons to gauge acetabular cup and femoral stem size to within one size range. This further helps in predicting nearly exact femoral offset size.
分析在 33 例初次全髋关节置换术中，顾问医生和住院医生使用硬拷贝 X 光片上的醋酸盐模板的准确性和观察者间可靠性（IOR），以了解接受专业培训的初级医生的准确性如何。
这项研究是基于问卷调查的前瞻性队列研究，持续 4 周。在进行醋酸盐测量后，记录外科医生对髋臼杯、股骨柄和股骨偏心距大小的测量值，然后将其与手术中最终选择的植入物进行比较。
髋臼杯的预测尺寸与最终匹配尺寸相差一个尺寸的准确率为 75%，股骨柄的预测尺寸与最终匹配尺寸相差一个尺寸的准确率为 91%。股骨偏心距的预测尺寸与最终匹配尺寸相差一个尺寸的准确率为 91%。在一个尺寸范围内，模板显示高级顾问医生和初级住院医生之间的杯（83%）和柄（100%）以及精确髋关节偏心距预测（92%）之间具有很强的 IOR。
我们得出结论，硬拷贝 X 光片上的醋酸盐模板有助于外科医生评估髋臼杯和股骨柄的尺寸，误差在一个尺寸范围内。这进一步有助于预测几乎精确的股骨偏心距尺寸。
