计算机体层摄影对髌骨隐匿性骨折的诊断评价

目的探讨髌骨隐匿性骨折的影像学诊断方法的诊断效果。方法对50例X线正侧位片阴性或可疑阳性的疑诊髌骨隐匿性骨折患者加拍X线轴位片和计算机体层摄影（CT）,观察两种影像学检查的诊断结果并作比较。结果各型髌骨隐匿性骨折CT的骨折检出率均高于X线轴位平片,总体阳性率X线轴位平片为12.0%,计算机体层摄影为90.0%,两者比较差异有统计学意义（P〈0.05）。CT诊断隐匿性骨折特异度达100%。结论 X线平片在髌骨骨折中应优先考虑选用,但CT检查清晰、快捷、准确,有利于临床决策,在各类髌骨隐匿性骨折中可权衡使用CT检查作为X线平片的有益补充。

Evaluation on diagnosis of patella occult fracture with computed tomography

Objective To explore the effects of the imaging diagnosis on patella occult fracture.Methods 50 cases of X ray PA & LTA negative or probable positive suspected patella occult fracture patients,acquired additional X ray axillary view film and computed tomography(CT),then observed and compared the diagnosis results of the two types of imaging examination.Results The fracture detection rates of all types of patella occult fracture by CT were higher than those by X ray ancillary view film.The overall positive rate by X ray ancillary view film was 12.0%,while that by computed tomography was 90.0%.The difference between the two methods had statistical significance(P<0.05).The specificity of diagnosing occult fracture reached 100%.Conclusion Priority should be given to X ray ancillary view film when selecting methods for detecting patella fracture,but CT examination is clear,swift,accurate and more helpful for clinical decision,and hence CT examination can be used when necessary as beneficial supplement to X ray ancillary view film in detecting all types of patella facture.