目的 旨在探讨多层螺旋CT平扫 及后处理技术对髌骨骨折的诊断价值。方 法 选取我院2017年4月-2018年4月收治的 46例髌骨骨折患者，收集患者影像学资料 及临床资料，46例患者均进行了CT平扫及 图像后处理，计算CT平扫与后处理技术对 髌骨骨折的诊断灵敏度及特异度，分析多 层螺旋CT及后处理技术对髌骨骨折的诊断 价值。结果 后处理技术诊断髌骨骨折的 灵敏度及特异度均为97.82%，明显高于CT 平扫84.78%、82.60%，差异具有统计学意 义(χ2 =4.929、6.035，P分别为0.026、 0.014)；髌骨骨折类型：横断骨折者6 例，粉碎性无移位骨折者24例，粉碎性移 位骨折者7例，垂直骨折3例，骨软骨损伤 6例。CT平扫可见髌骨骨皮质不程度的连 续性中断，骨折块分离多数较为明显，容 积再现立体感强，可多角度进行髌骨立体 结构旋转，观察骨质连续性中断、局部塌 陷、骨折痕迹直观、清晰。结论 多层螺 旋CT容积再现后处理技术诊断髌骨骨折的 灵敏度及特异度高，可直观显示骨质连续 性中断、局部塌陷及骨折痕迹情况，值得 临床推广运用。

Objective To explore the diagnostic value of multi-slice spiral CT (MSCT) in patella fracture. Methods A total of 46 patients with patellar fracture admitted to our hospital from April 2017 to April 2018 were selected. The clinical data of the patients were collected. All the 46 patients underwent CT non-enhanced scanning and image post-processing. The sensitivity and specificity of the diagnosis of patella fracture by CT scanning and post-processing were calculated. Results The sensitivity and specificity of the post-treatment technique for the diagnosis of patella fracture were 97.82%, which was significantly higher than 84.78% and 82.60% of CT non-enhanced scanning. The difference was statistically significant (χ2 =4.929 and 6.035, P=0.026 and 0.014, respectively). Patellar fracture type: there were 6 cases of transverse fracture, 24 cases of comminuted non-displaced fracture, 7 cases of comminuted displaced fracture, 3 cases of vertical fracture, and 6 cases of osteochondral damage. The patellar cortical insufficiency can be observed by CT scanning, most of the fracture fragments are obviously separated, and the volume reconstruction has a strong sense of stereoscopic reconstruction. The patellar three-dimensional structure can be rotated from multiple angles, and the bone continuity interruption, local collapse, visual and clear fracture trace can be observed. Conclusion The sensitivity and specificity of patellar fracture diagnosis with multi-slice spiral CT volume reconstruction is high, which can directly show the interruption of bone continuity, local collapse and fracture trace, and is worthy of clinical application.