初次翻译,望指正!
Detection of Orthopaedic Implants in Vivo by Enhanced-Sensitivity, Walk-Through Metal Detectors
体内骨科内置物通过增强敏感度,走查金属检测器的检测报道
Background: Since the September 11, 2001, World Trade Center terrorist attack, airports worldwide have heightened their security standards in efforts to discourage terrorist attacks. Patients have become increasingly concerned about whether their metallic implants will set off airport metal detectors. The purpose of this study was to assess rates of detection of various orthopaedic implants by airport detectors with the new security sensitivities.
背景：自从2001年9月11日世贸中心遭恐怖分子袭击后,全世界的机场为了阻止恐怖分子的袭击均提高了安全标准。人们越来越关注体内的金属内置物能否被机场金属检测器检测。本文的研究目的在于通过配备有新安全敏感度的机场检测器的检测来评估各种骨科内置物的检测率。
Methods: One hundred and twenty-nine volunteers with a total of 149 implants were asked to walk through an M-Scope three-zone metal detector at two sensitivity settings. Low sensitivity was equivalent to the United States Transportation Security Administration setting for regular security, and high sensitivity was equivalent to its standard for high security.
方法：在两种敏感度装置下，总计体内有149个内置物的129名志愿者被要求通过一种M示波器3区带的金属检测仪。低敏感度装置的性能相当于美国运输安全管理局针对普通安全装置的要求，而高敏感度装置的性能则相当于美国运输管理局高安全的标准。
Results: Of the 149 implants in 129 patients who were screened, eighty-four (56%) were trauma hardware, including intramedullary nails, plates, screws, and Kirschner wires, and sixty-five (44%) were arthroplasty implants. Seventy-seven (52%) of the 149 implants were detected by the metal detector at one or both settings. Multivariate analysis revealed that the type (p < 0.001), material (p < 0.001), and location (p < 0.001) of the implant were independent predictors of detection. The overall rate of detection was 88% for prosthetic replacements compared with 32% for plates, with the likelihood of detection being fifteen times greater (odds ratio = 15.0, 95% confidence interval = 5.9 to 39.1) for the prosthetic replacements. All total hip replacements and 90% of the total knee replacements were detected at the low-sensitivity setting. Intramedullary nails and Kirschner wires were not detected. The overall detection rate was 67% for implants in the lower extremity, 17% for those in the upper extremity, and 14% for those in the spine. The detection rate for implants in the lower extremity was ten times higher than that for implants in the upper extremity and eleven times higher than that for implants in the spine.
结果：通过荧光屏检测的129人中，体内的149个内置物中有84个（56％）是创伤骨科金属器械，包括髓内针，钢板，螺钉，克氏针，65个（44％）是关节内置物。在149个内置物中77个（52％）在一种或两种检测装置下均能通过金属检测器被检测出。对于检测，多变量分析提示：内置物的类型，材料和位置是相互独立的检测指标。假体置换总体检测率为88％，而钢板为32％。相对于假体置换，被检测出的可能性超过钢板的15倍（优势比＝15.0，95％的置信区间＝5.9到39.1）。所有髋关节假体及90％的全膝关节假体在在低敏感度装置下可被检测出。髓内钉和克氏针不能被检测出。下肢内置物中总的检出率为67％，上肢为17％，脊柱则为14％。下肢内置物的检出率超过上肢内置物检出率的10倍，是脊柱内置物检出率的11倍多。
Conclusions: More than half of all orthopaedic implants may be detected by metal detectors used at commercial airports. Total joint prostheses will routinely set off the detector, whereas nails, plates, screws, and wires are rarely detected. Cobalt-chromium and titanium implants are more likely to be detected than stainless-steel implants.
结论:在商业机场内,通过金属检测器有超过一半的骨科内置物能被检测出。全关节假体通常能被检测出，然而髓内钉、钢板、螺钉以及克氏针很少能被检测到。钴－铬及钛内置物比不锈钢内置物更易被检测出。
