Study on the needle placement accuracy assisted by self-designed channel screw guide system for pelvic fractures
10.3760/cma.j.cn115530-20240207-00063
- VernacularTitle:骨盆骨折通道螺钉导向系统的设计及其辅助置入导针的准确性研究
- Author:
Bo WEI
1
;
Hubing GUO
;
Xinfu YU
;
Bo MA
;
Dong LIANG
;
Bin ZHAO
;
Baoping JIE
;
Tianyun ZHAO
Author Information
1. 天水市第一人民医院骨科，天水 741000
- Keywords:
Pelvis;
Fractures, bone;
Bone nails;
Surgical procedures, minimally invasive;
Pelvic fracture channel screw guide system
- From:
Chinese Journal of Orthopaedic Trauma
2024;26(6):543-546
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the needle placement accuracy assisted by our self-designed channel screw guide system for pelvic fractures.Methods:Sixty pelvic models (provided by Shandong Weigao Group) were randomized into 2 groups ( n=30). In the experimental group, 2.0 mm Kirkler needles were implanted into the sacroiliac channel using our self-developed channel needle guide system in corresponding simulated surgical procedures; in the control group, the guide needles for sacroiliac screws were implanted manually under the guidance of C-arm fluoroscopy. The needle positions were assessed by gross observation and the offset distances measured on the X-ray films of pelvic entrance and exit views between the guide needle at the midline of the sacrum and the center point of bone channel. The offset distance, operation time, fluoroscopy frequency, and needle adjustment frequency were compared between the 2 groups of guide needles. Results:Guide needles were successfully implanted in all the pelvic models in the experimental group, with no penetration of guide needles outside the model. In the control group, 3 guide needles penetrated outside the model channel. The X-ray measurements showed that the offset distance of the needle in the experimental group was (2.23±0.82) mm, significantly smaller than that in the control group [(4.46±2.28) mm] ( P<0.05). In the experimental group, the fluoroscopy frequency [(12.0±0.3) times] and the needle adjustment frequency [(8.0±0.3) times] were significantly less than those in the control group [(26.0±0.4) times and (24.0±0.8) times] ( P<0.05). The operation time was (0.52±0.25) hours in the experimental group, significantly shorter than that in the control group [(1.26±0.36) hours] ( P<0.05). With a 2 mm diameter as an acceptable range, the accuracy was as high as 95.5%. Conclusion:Compared with manual placement of guide needles, our self-designed pelvic fracture channel screw guide system can lead to more accurate needle placement, reduced fluoroscopy frequency, fewer guide needle adjustments, and shortened operation time.
