Precise locating fluoroscopy reduces radiation exposure during the surgical procdure for thoracolumbar fracture / 中华骨科杂志

ABSTRACT

Objective To study the effect of precise locating technique of C?arm fluoroscopy in order to reduce the radia?tion exposure during the surgical procdure for thoracolumbar fracture. Methods From March 2010 to Octorber 2012, a total of 92 cases with thoracolumbar fracture underwent postierior internal fixation procdures with pedicle instrumentation. C?arm fluoros?copy was used in 44 cases with precise locating technique, while in 48 cases with traditional methods. In precise locating group,C?arm fluoroscopy was used after anesthesia. Once an ideal view was got, the position parameters of C?arm fluoroscopy machine were recorded. The machine was positioned according to the recording for the secondary fluoroscopy. Pre?operative and intra?operative number of times of exposure, length of exposure time, time for fluoroscopy and total operating time were recorded and compared be?tween two groups. Results Pre?operative number of times of exposure, exposure time, and time for fluoroscopy in precise locating group were (5.51±2.47), (2.26±1.05) s and (9.83±3.67) min,which were higher than those of (4.02±2.42), (1.78±0.98) s and (8.29± 3.52) min in traditional group. However, intra?operative number of times of exposure, exposure time, and time for fluoroscopy in precise locating group were (5.26±3.64), (2.24±1.24) s and (10.39±4.82) min,which were lower than those of (9.74±4.38), (4.21± 2.38) s and (24.69±6.35) min in traditional group,and total number of times of exposure, exposure time, time for fluoroscopy and total operating time in precise locating group were(10.77±4.16), (4.50±1.83) s, (20.22±5.03) min and(70.52±18.33)min,which were also lower than those of (13.76±5.31), (5.99±3.27) s , (32.98±7.83) min and(81.86±21.57)min in traditional group. Conclu?sion Precise locating technique of C?arm fluoroscopy reduces the radiation exposure during the surgical procdure for thoracolum?bar fracture.