Practical Geriatrics ›› 2023, Vol. 37 ›› Issue (7): 700-704.doi: 10.3969/j.issn.1003-9198.2023.07.013

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Effects of cannulated screw combined with three-dimensional honeycomb guide in the treatment of elderly patients with femoral neck fractures

SHEN Lin-hua, CAI Cheng-ming, WEI Chen, SHI Ben-hai, DONG Yu-qing   

  1. Department of Trauma Microsurgery, the 970 Hospital of the Chinese People's Liberation Army, Yantai 264000, China
  • Received:2022-09-08 Online:2023-07-20 Published:2023-07-25
  • Contact: DONG Yu-qing, Email: 13031659155@163.com

Abstract: Objective To investigate the effect of cannulated screw combined with different positioning screw implantation strategies on the accuracy of screw implantation, hip function score (Harris) and the complications in the treatment of femoral neck fractures in the elderly. Methods A total of 104 elderly patients with femoral neck fractures admitted to our hospital from April 2017 to April 2021 were enrolled and divided into two groups by random number table method, with 52 patients in each group. All patients underwent percutaneous hollow screw internal fixation, and the patients receiving freehand positioning of the nail implant were divided into group B and those receiving new 3D foveal guide assisted positioning of the nail implant were divided into group A. The data of perioperative indexes, imaging indexes, stress hormones, Harris score, visual analogue scale (VAS) score and the complications were collected and compared between the two groups. Results The accuracy rate of screw implantation was significantly higher and the number of guiding needle punctures was significantly lower in group A than those in group B (P<0.05). Immediately after operation, the parallelism between screws, the axial deviation between screws and neck and the screw coverage area in group A were lower than those in group B, and the distance between screws was greater than that in group B (P<0.01). The serum levels of cortisol and norepinephrine in group A were lower than those in group B 1 d after operation (P<0.05). There was no significant difference in Harris and VAS scores between the two groups before operation, 6 months and 12 months after operation (P>0.05). There was no significant difference in the incidence of complications between the two groups (P>0.05). Conclusions The new three-dimensional honeycomb guide-assisted positioning of the screw and the free-hand screw implantation show similar effects in the treatment of femoral neck fractures in the elderly patients. The former helps to improve the accuracy of screw implantation and imaging indicators, with less stress response.

Key words: aged, femoral neck fracture, percutaneous cannulated screw fixation, three-dimensional honeycomb guide

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