Spine deformity最新文献

{"title":"ChatGPT to answer frequently asked questions on scoliosis: comment.","authors":"Hinpetch Daungsupawong, Viroj Wiwanitkit","doi":"10.1007/s43390-025-01100-4","DOIUrl":"10.1007/s43390-025-01100-4","url":null,"abstract":"","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1283"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144013829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lumbosacral anatomy is unique in pediatric spondylolysis.","authors":"Ryan A Finkel, Nakul Narendran, Daniel Farivar, Paal Nilssen, Melodie F Metzger, David L Skaggs, Kenneth D Illingworth","doi":"10.1007/s43390-025-01084-1","DOIUrl":"10.1007/s43390-025-01084-1","url":null,"abstract":"<p><strong>Purpose: </strong>To determine whether patients with L5 spondylolysis have different lumbosacral anatomy compared to patients without L5 spondylolysis.</p><p><strong>Methods: </strong>Computed tomography (CT) scans of pediatric patients with isolated L5 spondylolysis were identified and matched 1:4 (age, sex, BMI) to patients without spondylolysis. Sagittal parameters assessed included sacral slope angle, sacral table angle, L4-S1 and L5-S1 Cobb angles, the horizontal angle of the L5 pars interarticularis, the distances between the L4 inferior articular process (IAP) and the S1 superior articular process (SAP) and their respective individual distances to the L5 pars. Coronal parameters assessed included the percent subluxation of L4 IAP below the facet joint.</p><p><strong>Results: </strong>1084 CT scans were reviewed. 32 patients with isolated L5 spondylolysis were identified and matched to 122 patients without spondylolysis. The horizontal angle of the L5 pars was greater in spondylolysis patients (142.5 ± 10.2 vs. 119.9 ± 5.9, p < 0.05). There was less distance (mm) between L4 IAP and S1 SAP (11.3 ± 3.9 vs. 14.7 ± 2.9, p < 0.05) and less distance (mm) from both L4 IAP (2.6 ± 1.7 vs. 5.4 ± 2.2, p < 0.05) and S1 SAP (0.7 ± 0.4 vs. 1.5 ± 0.7, p < 0.05), respectively, to the L5 pars in the spondylolysis group. Pearson's analyses revealed that a larger horizontal angle of the L5 pars was strongly associated with spondylolysis (0.59).</p><p><strong>Conclusion: </strong>Pediatric patients with L5 spondylolysis have a significantly more horizontal L5 pars that is closer to both the L4 IAP and S1 SAP.</p>","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1197-1204"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12227484/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143773342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outcomes in patients with tether rupture after anterior vertebral tethering for adolescent idiopathic scoliosis: the good, the bad, and the ugly.","authors":"John T Braun, Sofia C Federico, David M Lawlor, Brian E Grottkau","doi":"10.1007/s43390-025-01077-0","DOIUrl":"10.1007/s43390-025-01077-0","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Introduction: &lt;/strong&gt;Though multiple studies have reported tether rupture rates after anterior vertebral tethering (AVT) as high as 50%, few have adequately analyzed the clinical significance of tether rupture and factors that potentially increase the likelihood of revision surgery. We reviewed 262 consecutive adolescent idiopathic scoliosis (AIS) patients after AVT with the goal of identifying early and late tether ruptures and categorizing these tether ruptures as inconsequential, consequential, problematic, or beneficial. Our hypothesis was that the tether rupture rate after AVT for AIS would be significant but only a small percentage of patients would require revision surgery.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;Charts, radiographs, and CT scans were reviewed for tether rupture in 262 consecutive AIS patients treated with AVT for thoracic and thoracolumbar/lumbar curves 33-77°. Early tether rupture occurred &lt; 2 years and late tether rupture ≥ 2 years postoperatively. Tether rupture was further categorized as inconsequential (final curve &lt; 40° and no pain), consequential (curve ≥ 40° and/or convex back pain), problematic (revision surgery required), or beneficial (improvement of overcorrection) at follow-up.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;Of 262 consecutive AIS patients status post AVT (106 thoracic curves, 53 thoracolumbar curves, and 103 double curves), tether rupture was found in 45 patients with 66 curves (34 thoracic and 32 thoracolumbar/lumbar) treated at age 14.5 years and at Risser 2.6 and Sanders 4.7. Curves with tether rupture corrected from 50.3° preoperatively to 20.8° postoperatively, but lost 7.2° of correction with tether rupture settling at 28.0° final at 2.6 years (0-11 years). Early tether rupture occurred in 12/133 (9%) and late tether rupture in 33/129 (26%) patients with 2-11 year follow-up. Tether rupture was inconsequential in 67% (30/45) of patients, consequential in 13% (6/45), problematic in 16% (7/45), and beneficial in 4% (2/45). In those patients with tether rupture, 69% occurred in a thoracolumbar/lumbar curve and 47% demonstrated a rupture at L2,3. Revision surgery for a thoracolumbar/lumbar tether rupture involved tether replacement alone in 4 patients and thoracic fusion in 2 additional patients, 1 requiring thoracic fusion alone, and 1 requiring thoracic fusion with thoracolumbar/lumbar tether replacement (hybrid). Revision surgery for a thoracic tether rupture involved 1 tether replacement and 1 thoracic fusion. Revision surgery was unrelated to curve correction or loss of correction, but was related to multiple tether ruptures and convex back pain (p &lt; 0.005).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusion: &lt;/strong&gt;This study demonstrated an early tether rupture rate of 9% and late tether rupture rate of 26% in a large series of patients treated with AVT for AIS over 14 years. While the majority of patients had inconsequential tether rupture (67%), with 7.2° loss of correction, a final curve &lt; 40°, and no pain, a numbe","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1085-1098"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12227475/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the potential relationships between idiopathic scoliosis and various multifactorial diseases: a systematic scoping review.","authors":"Kenney Ki Lee Lau, Karlen Ka Pui Law, Owen O Man Kam, Jason Pui Yin Cheung, Prudence Wing Hang Cheung","doi":"10.1007/s43390-025-01085-0","DOIUrl":"10.1007/s43390-025-01085-0","url":null,"abstract":"<p><strong>Background: </strong>Although the etiology of adolescent idiopathic scoliosis (AIS) remains largely elusive, it is widely recognized as a multifactorial condition shaped by both genetic predispositions and environmental influences. This review seeks to explore the intricate relationships between idiopathic scoliosis and its associated comorbidities, with the goal of advancing our understanding of this multifaceted disorder.</p><p><strong>Methods: </strong>Primary studies involving human subjects diagnosed with idiopathic scoliosis and presenting comorbid conditions were included. Six online databases (AMED, CENTRAL, CINAHL, EMBASE, MEDLINE, and WOS) were systematically searched. Two reviewers independently screened citations and extracted data. Studies were categorized based on commonly examined diagnoses, and outcome measures were descriptively reported.</p><p><strong>Results: </strong>Our search yielded 1185 citations, with 9 studies meeting the eligibility after screening. These studies examined comorbidities involving conditions like malocclusion, central precocious puberty (CPP), gingival diseases, malignant hematopoietic neoplasms (MHN), temporomandibular joint disorders (TMD), and functional gastrointestinal disorders (FGD). Significant associations were found between AIS and these multifactorial disorders, including dental anomalies (i.e., asymmetrical canine, midline deviations, crossbites, overbite, multiple malocclusion, gingivitis, distocclusion, asymmetric molar occlusion, maxillary overjet, crowding, and reverse chewing cycles), digestive issues (i.e., FGD), endocrine disruptions (i.e., CPP), musculoskeletal imbalances (i.e., reduced masseter muscle volume, higher Fonseca Anamnestic Index score, and greater Helkimo Clinical Dysfunction Index score), and oncological conditions (i.e., MHN).</p><p><strong>Conclusion: </strong>We have presented the multifactorial and potential systemic nature of AIS by revealing its associations with comorbid conditions. These relationships may indicate shared genetic, hormonal, neuromuscular, and immunological pathways.</p>","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1019-1026"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143812191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetically controlled rod fracture is related to rod diameter but lower than TGR.","authors":"Matthew Weintraub, Omar Taha, Ritt Givens, Matan Malka, Mehdi M Elfilali, Kevin Lu, Paul Sponseller, Peter Sturm, Oheneba Boachie-Adjei, John Emans, Francisco Sánchez Pérez-Grueso, Michael G Vitale, Benjamin D Roye","doi":"10.1007/s43390-025-01067-2","DOIUrl":"10.1007/s43390-025-01067-2","url":null,"abstract":"<p><strong>Purpose: </strong>To quantify the risk of rod fracture after growth-friendly early-onset scoliosis (EOS) surgery, compare the risk of fracture between magnetically controlled growing rods (MCGR) and traditional growing rods (TGR), and compare the risk of fracture based on rod diameter.</p><p><strong>Methods: </strong>EOS patients undergoing TGR or MCGR instrumentation were identified from a large, multi-national registry (Pediatric Spine Study Group). Subgroup analyses (chi-squared and Mann-Whitney U tests) were performed between rods with diameters ≤ 5 mm and > 5 mm and between MCGR and TGR. To account for difference in follow-up, a log-rank survival analysis was performed between subgroups over a 5-year period.</p><p><strong>Results: </strong>A total of 1588 patients, representing 3176 rods, met the inclusion criteria. There was no difference in pre-operative Cobb angle or maximum kyphosis between MCGR and TGR groups. At index surgery, MCGR patients were slightly older, taller, and heavier, although BMI was similar. The overall 2-year risk of rod fracture was 3.05%. TGR 2-year fracture risk was higher than MCGR (4.96% vs. 1.82%, p < 0.001). Similarly, among MCGRs, rods with a diameter ≤ 5 mm fractured at a higher rate than those > 5 mm. The 5-year survival analysis corroborated our 2-year findings.</p><p><strong>Conclusion: </strong>Although relatively rare, the risk of rod fracture in EOS patients may be higher than previously reported. The overall risk of rod fracture is higher with TGR compared to MCGR, and while smaller rod diameter led to increased risk of fracture in MCGR constructs, the rod diameter was not associated with fracture risk in TGR.</p><p><strong>Level of evidence: </strong>IV.</p>","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1269-1276"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143671000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does an increased preoperative body mass index (BMI) affect adolescent idiopathic scoliosis surgery outcomes and complications? A meta-analysis.","authors":"Ralph Maroun, Mohammad Daher, Bshara Sleem, Joseph E Nassar, Manjot Singh, Sarah L Criddle, Bassel G Diebo, Amer Sebaaly, Alan H Daniels","doi":"10.1007/s43390-025-01068-1","DOIUrl":"10.1007/s43390-025-01068-1","url":null,"abstract":"<p><strong>Objective: </strong>Adolescent idiopathic scoliosis (AIS) is the most common form of scoliosis. With obesity reaching unprecedented levels in adolescents, we aimed to perform a meta-analysis examining the impact of increased Body Mass Index (BMI) on AIS corrective surgery.</p><p><strong>Methods: </strong>Cochrane, PubMed, and Google Scholar (pages 1-20) were searched up to July 2024. The inclusion criteria consisted of studies comparing increased BMI patients with patients having a normal BMI (BMI < 25 OR < 85th percentile) in the setting of corrective surgery for AIS. Investigations consisting of non-comparative studies, or studies with non-relevant outcomes were excluded.</p><p><strong>Results: </strong>Twelve retrospective studies met inclusion criteria and were included in this meta-analysis. There were significantly fewer complications (OR = 0.44, p = 0.002), readmissions (OR = 0.39, p = 0.05), and wound-related complications (OR = 0.32, p = 0.005) in patients with normal BMI. In addition, the patients with normal BMI had a shorter operative time (MD = - 15.43, p = 0.005) as well as a smaller pre- and post-operative major curve (MD = - 1.54; p = 0.01, MD = - 2.45; p = 0.002) and thoracic kyphosis (MD = - 4.87; p < .001, MD = - 2.67; p < .001).</p><p><strong>Conclusion: </strong>Patients undergoing AIS surgery with an increased preoperative BMI may be associated with less favorable outcomes. Although the elevated BMI alone may be the cause of the increased complications in some patients, obese patients also presented with larger curves and more kyphosis, thus potentially explaining an additional contributor to the increased complication rate. Curves may be less noticeable in obese patients as compared to normal weight patients, thus delayed diagnosis may be occurring. Optimized scoliosis screening in obese patients, and also studies assessing the benefits of preoperative weight management in AIS surgery are needed.</p>","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1007-1017"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143664405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pain catastrophizers undergoing posterior spinal fusion (PSF) for idiopathic scoliosis have lower preoperative SRS-30 scores but do not require increased postoperative narcotics.","authors":"Elaine Tran, David Thornberg, Anne-Marie Datcu, Chan-Hee Jo, Brandon Ramo","doi":"10.1007/s43390-025-01058-3","DOIUrl":"10.1007/s43390-025-01058-3","url":null,"abstract":"<p><strong>Background: </strong>Pain catastrophizing has been linked to poorer patient-reported pain outcomes for orthopedic surgery, but its effect on perioperative pain and narcotic use is poorly understood. Our purpose was to determine if pain catastrophizing has a negative effect on perceptions of perioperative pain and narcotic use in patients undergoing posterior spinal fusion (PSF) for idiopathic scoliosis (IS).</p><p><strong>Methods: </strong>A retrospective, IRB-approved review of prospectively collected data of IS patients undergoing PSF. Patients were considered PCs when they scored above the 75th percentile in the PCS (total score ≥ 30). Inpatient narcotic consumption was calculated as morphine equivalent per Kg (mEq/Kg).</p><p><strong>Results: </strong>Five hundred seventeen patients (411F, 106M) underwent PSF for IS. Forty-five (8.7%) patients were pain catastrophizers (PCs). PC patients had significantly lower pain, appearance, and mental scores. PCs scored slightly higher on VAS pain scores (2.20 vs 1.92, p = 0.015) in the first 24 h only. There were no differences in opioid use between PC vs. non-PC cohorts for inpatient (2.01 vs 2.14 mEq/Kg, p = 0.4), discharge (5.6 vs 5.87 mEq/Kg, p = 0.3), or total narcotics (7.61 v 8.01 mEq/Kg, p = 0.2). Fifty-five patients out of five hundred seventeen requested narcotic refills with no difference in refill rates between cohorts (p = 0.7076).</p><p><strong>Conclusion: </strong>We found that pain catastrophizers had lower pre-operative SRS-30 scores across all domains except satisfaction. We found no association between pain catastrophizing and increased opioid use in either the inpatient stay or post-discharge. While pain catastrophizing has been associated with lower pre- and post-operative pain scores, it does not appear to predispose to higher narcotic utilization perioperatively.</p><p><strong>Level of evidence: </strong>II: retrospective comparative study.</p>","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1135-1141"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143410632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does transitioning to a dual surgeon approach improve outcomes for posterior spinal fusion of adolescent idiopathic scoliosis and neuromuscular scoliosis?","authors":"Nicholas B Taylor, Dana Perim, Marlon Murasko, Ashar Ata, Kelley Banagan","doi":"10.1007/s43390-025-01059-2","DOIUrl":"10.1007/s43390-025-01059-2","url":null,"abstract":"<p><strong>Study design: </strong>Retrospective, chart review.</p><p><strong>Purpose: </strong>Improvements in operative time, blood loss, and length of stay (LOS) when using a dual surgeon approach for the treatment of scoliosis have been suggested in the literature; however, the external validity of these findings has been debated. In this study, we examined the impact of transitioning from a single surgeon to a dual surgeon approach in the treatment of adolescent idiopathic scoliosis (AIS) and neuromuscular scoliosis (NMS) across non-contemporary periods at a single institution.</p><p><strong>Methods: </strong>Through a retrospective chart review we identified 208 adolescent patients who underwent spinal fusion for the treatment of AIS or NMS between November 2015 and January 2022. The 73 cases meeting inclusion criteria were analyzed for operative time, blood loss, pre-and post-operative Cobb angles, and hospital length of stay.</p><p><strong>Results: </strong>The dual surgeon AIS group was found to have a shorter hospital (3.6 vs. 5.2 days, p < 0.001) and ICU length of stay (0.3 vs. 3.7 days, p < 0.001), greater Cobb angle correction (35.6 vs. 23.3 degrees, p < 0.001), and lower transfusion requirement compared to the single surgeon AIS group (0.1 vs. 0.7 units, p = 0.003). Total operative time and estimated blood loss (EBL) were not significantly different. The dual surgeon NMS group only showed shorter ICU length of stay (2.9 vs. 9.1 days, p = 0.043).</p><p><strong>Conclusions: </strong>Utilizing a dual surgeon approach for AIS patients could improve hospital and ICU length of stay, blood transfusion requirements, and Cobb angle correction without an increase in operative time.</p><p><strong>Level of evidence: </strong>Level III, retrospective, comparative study.</p>","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1153-1159"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143425937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jean Dubousset, MD : From the Scoliosis Research Society History Committee.","authors":"Jay Shapiro, Andrew G King, George H Thompson, Behrooz A Akbarnia, Katie Dodd, Richard Schwend, Acke Olin, Siavash S Haghighi","doi":"10.1007/s43390-025-01128-6","DOIUrl":"10.1007/s43390-025-01128-6","url":null,"abstract":"","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"975-977"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144340331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A single-centre early experience of the Pulse™ navigation system for posterior spinal fusion in adolescent idiopathic scoliosis (AIS).","authors":"Adam P Lloyd, Haiming Jin, George McKay, Mathew Sewell, Jwalant Mehta, David S Marks, Morgan E B Jones","doi":"10.1007/s43390-025-01054-7","DOIUrl":"10.1007/s43390-025-01054-7","url":null,"abstract":"<p><strong>Purpose: </strong>Pedicle screw-based constructs are the standard of surgical management in AIS. Several manufacturers have developed navigation systems utilising intraoperative 3D imaging to improve screw placement accuracy. However, concerns remain regarding intraoperative radiation exposure utilising these systems compared to traditional techniques. The aim of this study was to evaluate our experience of 3D intraoperative imaging compared to techniques utilising 2D fluoroscopy for pedicle screw placement in cases of posterior spinal fusion (PSF) for AIS.</p><p><strong>Methods: </strong>This was a single-centre, retrospective analysis of cases undergoing PSF for AIS using 3D navigation or freehand screw insertion techniques. The two groups were matched for curve type, curve magnitude, implant density and fused levels. We compared the correction achieved, intraoperative radiation exposure, operating time and rates of intraoperative screw repositioning.</p><p><strong>Results: </strong>A total of 52 cases were identified (26 navigated and 26 freehand). No significant differences were observed in baseline characteristics between the two groups. There were no significant differences observed in correction achieved between groups; however, mean radiation exposure in the navigated cases was approximately 11 times higher. Operative time was significantly longer in the navigated group but there was a significant reduction in requirement for intraoperative screw repositioning using navigation at 0.2% versus the freehand group at 1.5%.</p><p><strong>Conclusions: </strong>Our early experience of intraoperative 3D imaging for navigated implant insertion for AIS has shown equivalence to freehand techniques in achieved correction, with fewer changes in intraoperative screw positioning at the expense of significantly increased overall radiation exposure and procedure duration.</p><p><strong>Level of evidence: </strong>II.</p>","PeriodicalId":21796,"journal":{"name":"Spine deformity","volume":" ","pages":"1161-1167"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143390387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}