The impact of sliding distance of the femoral neck system on the curative efficacy of displaced femoral neck fractures: a retrospective cohort study
10.3760/cma.j.cn115530-20250106-00009
- VernacularTitle:股骨颈动力交叉钉系统滑动距离对移位型股骨颈骨折疗效的影响研究
- Author:
Xiaole JIANG
1
;
Dongze LIN
;
Yixin HUANG
;
Ke ZHENG
;
Jiajie LIU
;
Chaohui LIN
;
Peisheng CHEN
;
Fengfei LIN
Author Information
1. 福州市第二总医院骨科，福建省创伤骨科急救与康复临床医学研究中心，福州 350007
- Publication Type:Journal Article
- Keywords:
Femoral neck fractures;
Fracture fixation, internal;
Postoperative complications;
Femoral neck system
- From:
Chinese Journal of Orthopaedic Trauma
2025;27(9):758-766
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the impact of sliding distance of the fmoral neck system (FNS) on the curative efficacy of displaced femoral neck fractures.Methods:A retrospective study was conducted to analyze the clinical data of the 179 patients with displaced femoral neck fracture who had been treated by FNS fixation at Department of Orthopaedics, The Second General Hospital of Fuzhou between September 2019 and September 2023. Based on the FNS sliding distance measured on X-ray films on the day after surgery or one day after surgery, the patients were assigned into 2 groups: a short sliding distance group [sliding distance ≤5 mm, n=55; 35 males, 20 females; median age: 50.0 (34.0, 59.0) years; body mass index (BMI): (24.0±2.4) kg/m 2] and a long sliding distance group [5 mm 0.05). At postoperative 3, 6, and 12 months, the distances of femoral neck shortening in the short sliding distance group [2.5 (0.7, 3.5) mm, 2.6 (0.7, 3.5) mm, and 2.7 (0.7, 3.5) mm] were significantly shorter than those in the long sliding distance group [3.2 (1.3, 5.7) mm, 3.2 (1.3, 7.1) mm, and 3.2 (1.4, 7.1) mm] ( P<0.05). The incidence of moderate-to-severe shortening at one year after surgery in the long sliding distance group [26.6% (33/124)] was significantly higher than that in the short sliding distance group [3.6%(2/55)] ( P<0.05). No significant differences were found between the 2 groups in tip-apex distance, operation time, intraoperative blood loss, fracture reduction quality, fracture healing time, or incidence of complications ( P>0.05). At the last follow-up, the Harris Hip Score in the short sliding distance group [93.5 (88.7, 96.2) points] was significantly higher than that in the long sliding distance group [90.1 (82.9, 94.9) points] ( P<0.05). Conclusion:In the treatment of displaced femoral neck fractures with FSN fixation, compared with those with a long sliding distance, the patients with a short sliding distance demonstrate superior outcomes in postoperative femoral neck shortening and functional recovery of the hip, but no significant difference in the incidence of complications.
