The Impact of Screw Density on the Outcomes of Adolescent Idiopathic Scoliosis Correction Surgery: A Multicenter Retrospective Study
Background To evaluate the efficacy of low screw density constructs versus high screw density constructs in adolescent idiopathic scoliosis (AIS) surgery.Methods Data were collected from AIS patients who underwent pedicle screw fixation surgery at two medical centers. Patients were stratified into l...
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Taylor & Francis Group
2025-12-01
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| Series: | Journal of Investigative Surgery |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/08941939.2025.2531589 |
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| author | ZhaoJun Lu Chong Liu JiaKun Li XiaoPeng Qin Jiarui Chen Jiang Xue Hao Li Tianyou Chen Tao Chen XinLi Zhan |
| author_facet | ZhaoJun Lu Chong Liu JiaKun Li XiaoPeng Qin Jiarui Chen Jiang Xue Hao Li Tianyou Chen Tao Chen XinLi Zhan |
| author_sort | ZhaoJun Lu |
| collection | DOAJ |
| description | Background To evaluate the efficacy of low screw density constructs versus high screw density constructs in adolescent idiopathic scoliosis (AIS) surgery.Methods Data were collected from AIS patients who underwent pedicle screw fixation surgery at two medical centers. Patients were stratified into low and high screw density groups, calculated as pedicle screws per fused vertebral level. The dataset comprised demographics, radiological parameters, surgical outcomes and postoperative complications.Results Of 213 AIS patients analyzed, 114 and 99 comprised low- and high-density groups respectively. Compared with high-density constructs, low-density constructs demonstrated shorter operative time (median: 17.93 min, IQR: 14.66–20.50 vs. 22.15 min, IQR: 16.80–24.77; p = 6.30e−07), lower intraoperative blood loss (median: 762.29 ml, IQR: 600–900 vs. 954.19 ml, IQR: 800–1030; p = 7.70e−07), fewer postoperative pain (median: 4.719, IQR: 3–7 vs. 5.505, IQR: 3.5–7; p = 0.009), and shorter hospital stays (median: 11.15 days, IQR: 7–13.5 vs. 12.48 days, IQR: 8–15; p = 0.04). Both groups had equivalent Cobb angle correction (median: 67.31%, IQR: 60.50% –76.84% vs. 67.97%, IQR: 62.54%–73.52%; p = 0.90).Conclusion Optimizing screw density may minimize intraoperative blood loss and postoperative pain without affecting correction efficacy in AIS; however, longitudinal studies are needed to assess long-term functional and quality-of-life outcomes. |
| format | Article |
| id | doaj-art-3e450b600276471a97b21aa3c115f91f |
| institution | Kabale University |
| issn | 0894-1939 1521-0553 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
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| series | Journal of Investigative Surgery |
| spelling | doaj-art-3e450b600276471a97b21aa3c115f91f2025-08-20T03:56:46ZengTaylor & Francis GroupJournal of Investigative Surgery0894-19391521-05532025-12-0138110.1080/08941939.2025.2531589The Impact of Screw Density on the Outcomes of Adolescent Idiopathic Scoliosis Correction Surgery: A Multicenter Retrospective StudyZhaoJun Lu0Chong Liu1JiaKun Li2XiaoPeng Qin3Jiarui Chen4Jiang Xue5Hao Li6Tianyou Chen7Tao Chen8XinLi Zhan9Spine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of ChinaSpine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of ChinaSpine Surgery, Yulin Orthopedic Hospital of Integrated Traditional Chinese and Western Medicine, Yulin, Guangxi, People’s Republic of ChinaSpine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of ChinaSpine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of ChinaSpine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of ChinaSpine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of ChinaSpine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of ChinaSpine Surgery, Yulin Orthopedic Hospital of Integrated Traditional Chinese and Western Medicine, Yulin, Guangxi, People’s Republic of ChinaSpine Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of ChinaBackground To evaluate the efficacy of low screw density constructs versus high screw density constructs in adolescent idiopathic scoliosis (AIS) surgery.Methods Data were collected from AIS patients who underwent pedicle screw fixation surgery at two medical centers. Patients were stratified into low and high screw density groups, calculated as pedicle screws per fused vertebral level. The dataset comprised demographics, radiological parameters, surgical outcomes and postoperative complications.Results Of 213 AIS patients analyzed, 114 and 99 comprised low- and high-density groups respectively. Compared with high-density constructs, low-density constructs demonstrated shorter operative time (median: 17.93 min, IQR: 14.66–20.50 vs. 22.15 min, IQR: 16.80–24.77; p = 6.30e−07), lower intraoperative blood loss (median: 762.29 ml, IQR: 600–900 vs. 954.19 ml, IQR: 800–1030; p = 7.70e−07), fewer postoperative pain (median: 4.719, IQR: 3–7 vs. 5.505, IQR: 3.5–7; p = 0.009), and shorter hospital stays (median: 11.15 days, IQR: 7–13.5 vs. 12.48 days, IQR: 8–15; p = 0.04). Both groups had equivalent Cobb angle correction (median: 67.31%, IQR: 60.50% –76.84% vs. 67.97%, IQR: 62.54%–73.52%; p = 0.90).Conclusion Optimizing screw density may minimize intraoperative blood loss and postoperative pain without affecting correction efficacy in AIS; however, longitudinal studies are needed to assess long-term functional and quality-of-life outcomes.https://www.tandfonline.com/doi/10.1080/08941939.2025.2531589adolescent idiopathic scoliosisscrew densityradiographicshort-term outcomesAIS |
| spellingShingle | ZhaoJun Lu Chong Liu JiaKun Li XiaoPeng Qin Jiarui Chen Jiang Xue Hao Li Tianyou Chen Tao Chen XinLi Zhan The Impact of Screw Density on the Outcomes of Adolescent Idiopathic Scoliosis Correction Surgery: A Multicenter Retrospective Study Journal of Investigative Surgery adolescent idiopathic scoliosis screw density radiographic short-term outcomes AIS |
| title | The Impact of Screw Density on the Outcomes of Adolescent Idiopathic Scoliosis Correction Surgery: A Multicenter Retrospective Study |
| title_full | The Impact of Screw Density on the Outcomes of Adolescent Idiopathic Scoliosis Correction Surgery: A Multicenter Retrospective Study |
| title_fullStr | The Impact of Screw Density on the Outcomes of Adolescent Idiopathic Scoliosis Correction Surgery: A Multicenter Retrospective Study |
| title_full_unstemmed | The Impact of Screw Density on the Outcomes of Adolescent Idiopathic Scoliosis Correction Surgery: A Multicenter Retrospective Study |
| title_short | The Impact of Screw Density on the Outcomes of Adolescent Idiopathic Scoliosis Correction Surgery: A Multicenter Retrospective Study |
| title_sort | impact of screw density on the outcomes of adolescent idiopathic scoliosis correction surgery a multicenter retrospective study |
| topic | adolescent idiopathic scoliosis screw density radiographic short-term outcomes AIS |
| url | https://www.tandfonline.com/doi/10.1080/08941939.2025.2531589 |
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