The effects of the positioning of a bolt in the femoral neck system on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures
Abstract Background To analyze the effects of the positioning of a bolt in the femoral neck system (FNS) on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures (FNFs). Methods This was a retrospective study involving 114 middle-aged and young adults with dis...
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BMC
2025-01-01
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| Series: | BMC Musculoskeletal Disorders |
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| Online Access: | https://doi.org/10.1186/s12891-025-08349-w |
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| author | Yujie Jin Xiaoqiang Zhou Zhiqiang Li Yubo Liu Renjie Xu Jun Shen Xiangxin Zhang Xiao Yu |
| author_facet | Yujie Jin Xiaoqiang Zhou Zhiqiang Li Yubo Liu Renjie Xu Jun Shen Xiangxin Zhang Xiao Yu |
| author_sort | Yujie Jin |
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| description | Abstract Background To analyze the effects of the positioning of a bolt in the femoral neck system (FNS) on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures (FNFs). Methods This was a retrospective study involving 114 middle-aged and young adults with displaced FNFs who were surgically treated with internal fixation via the FNS in the Department of Orthopedics, Suzhou Municipal Hospital, from December 2019 to January 2023. The degree of deviation of the central axis of the femoral head and neck from the tip of the bolt (W), the tip‒apex distance (TAD) and the length of femoral neck shortening (LFNS) were measured on postoperative X-ray and computed tomography (CT) scan images. Clinical efficacy was assessed with the Harris Hip Score (HHS) and the EuroQol five-dimensional questionnaire-5L (EQ-5D-5L) utility index. The enrolled patients were divided into the central group (W ≤ 20%) and deviation group (W > 20%) on the basis of postoperative W value. The quality of fracture reduction, time to postoperative weight-bearing of the affected limb, time to fracture healing, and the TAD, LFNS, HHS and EQ-5D-5L utility index at the last follow-up visit were compared between the groups. Postoperative complications and cases of revision surgery were recorded. Results Preoperative baseline characteristics, the quality of fracture reduction, the need for auxiliary reduction and the follow-up time were comparable between the central group and deviation group (all P > 0.05). No significant difference in the time to postoperative partial weight-bearing of the affected limb was detected between the groups (P > 0.05). Patients in the central group presented with a significantly shorter time to full weight-bearing of the affected limb, time to fracture healing, and TAD and LFNS at the last follow-up visit but a greater HHS and EQ-5D-5L utility index than those in the deviation group did (all P < 0.05). The incidence of revision surgery was significantly lower in the central group than in the deviation group (P < 0.05). Conclusion Positioning of the FNS bolt closer to the central axis of the femoral head and neck favors a shorter time to fracture healing, greater hip function and a lower incidence of revision surgery in middle-aged and young adults with displaced FNFs. |
| format | Article |
| id | doaj-art-dc19258c1a994c498804d430cf8f2582 |
| institution | Kabale University |
| issn | 1471-2474 |
| language | English |
| publishDate | 2025-01-01 |
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| series | BMC Musculoskeletal Disorders |
| spelling | doaj-art-dc19258c1a994c498804d430cf8f25822025-02-02T12:05:31ZengBMCBMC Musculoskeletal Disorders1471-24742025-01-012611910.1186/s12891-025-08349-wThe effects of the positioning of a bolt in the femoral neck system on the short-term outcomes of middle-aged and young adults with displaced femoral neck fracturesYujie Jin0Xiaoqiang Zhou1Zhiqiang Li2Yubo Liu3Renjie Xu4Jun Shen5Xiangxin Zhang6Xiao Yu7Department of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical UniversityDepartment of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical UniversityDepartment of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical UniversityDepartment of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical UniversityDepartment of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical UniversityDepartment of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical UniversityDepartment of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical UniversityDepartment of Orthopedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical UniversityAbstract Background To analyze the effects of the positioning of a bolt in the femoral neck system (FNS) on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures (FNFs). Methods This was a retrospective study involving 114 middle-aged and young adults with displaced FNFs who were surgically treated with internal fixation via the FNS in the Department of Orthopedics, Suzhou Municipal Hospital, from December 2019 to January 2023. The degree of deviation of the central axis of the femoral head and neck from the tip of the bolt (W), the tip‒apex distance (TAD) and the length of femoral neck shortening (LFNS) were measured on postoperative X-ray and computed tomography (CT) scan images. Clinical efficacy was assessed with the Harris Hip Score (HHS) and the EuroQol five-dimensional questionnaire-5L (EQ-5D-5L) utility index. The enrolled patients were divided into the central group (W ≤ 20%) and deviation group (W > 20%) on the basis of postoperative W value. The quality of fracture reduction, time to postoperative weight-bearing of the affected limb, time to fracture healing, and the TAD, LFNS, HHS and EQ-5D-5L utility index at the last follow-up visit were compared between the groups. Postoperative complications and cases of revision surgery were recorded. Results Preoperative baseline characteristics, the quality of fracture reduction, the need for auxiliary reduction and the follow-up time were comparable between the central group and deviation group (all P > 0.05). No significant difference in the time to postoperative partial weight-bearing of the affected limb was detected between the groups (P > 0.05). Patients in the central group presented with a significantly shorter time to full weight-bearing of the affected limb, time to fracture healing, and TAD and LFNS at the last follow-up visit but a greater HHS and EQ-5D-5L utility index than those in the deviation group did (all P < 0.05). The incidence of revision surgery was significantly lower in the central group than in the deviation group (P < 0.05). Conclusion Positioning of the FNS bolt closer to the central axis of the femoral head and neck favors a shorter time to fracture healing, greater hip function and a lower incidence of revision surgery in middle-aged and young adults with displaced FNFs.https://doi.org/10.1186/s12891-025-08349-wFemoral neck fracturesInternal fixationFemoral neck systemBolt positioning |
| spellingShingle | Yujie Jin Xiaoqiang Zhou Zhiqiang Li Yubo Liu Renjie Xu Jun Shen Xiangxin Zhang Xiao Yu The effects of the positioning of a bolt in the femoral neck system on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures BMC Musculoskeletal Disorders Femoral neck fractures Internal fixation Femoral neck system Bolt positioning |
| title | The effects of the positioning of a bolt in the femoral neck system on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures |
| title_full | The effects of the positioning of a bolt in the femoral neck system on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures |
| title_fullStr | The effects of the positioning of a bolt in the femoral neck system on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures |
| title_full_unstemmed | The effects of the positioning of a bolt in the femoral neck system on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures |
| title_short | The effects of the positioning of a bolt in the femoral neck system on the short-term outcomes of middle-aged and young adults with displaced femoral neck fractures |
| title_sort | effects of the positioning of a bolt in the femoral neck system on the short term outcomes of middle aged and young adults with displaced femoral neck fractures |
| topic | Femoral neck fractures Internal fixation Femoral neck system Bolt positioning |
| url | https://doi.org/10.1186/s12891-025-08349-w |
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