Spine Surgery and Related Research最新文献

{"title":"Relationship between the Scottie Dog Sign and Cleft Distance in Lumbar Spondylolysis.","authors":"Satoshi Matsuura, Masaki Tatsumura, Reo Asai, Shun Okuwaki, Hisanori Gamada, Katsuya Nagashima, Yousuke Takeuchi, Toru Funayama","doi":"10.22603/ssrr.2025-0130","DOIUrl":"10.22603/ssrr.2025-0130","url":null,"abstract":"<p><strong>Introduction: </strong>The Scottie dog sign on plain oblique radiography is an imaging evaluation indicator for detecting lumbar spondylolysis; however, if the cleft distance is small, the sensitivity of this method is low, making it difficult to detect the Scottie dog sign. Detailed studies on this aspect are scarce. Therefore, this study aimed to investigate the relationship between the Scottie dog sign and cleft distance in patients with terminal-stage bilateral lumbar spondylolysis.</p><p><strong>Methods: </strong>The retrospective, cross-sectional study included 75 patients with 150 clefts of lumbar spondylolysis, all of whom had terminal-stage bilateral lumbar spondylolysis at the time of their first visit to our hospital. Patients were classified into the Scottie dog sign-positive group (P) and negative group (N). The mean cleft distance between the two groups was compared by a t-test using the sagittal and axial planes of computed tomography (CT) images.</p><p><strong>Results: </strong>The mean cleft distance in groups P and N, respectively, was 3.05±2.00 mm and 1.96±2.38 mm in sagittal planes (p<0.01), and 2.64±1.70 mm and 1.92±1.93 mm in axial planes (p<0.01), with significant differences observed between groups. However, in some cases, the Scottie dog sign was negative even when the cleft distance was large, depending on the angle of the bone defect.</p><p><strong>Conclusions: </strong>We observed an association between the Scottie dog sign and cleft distance in patients with terminal-stage bilateral lumbar spondylolysis. The cleft distance in cases where the Scottie dog sign was positive was larger than that in cases where the Scottie dog sign was negative. These findings suggest that measuring the cleft distance using CT may help predict the visibility of the Scottie dog sign on plain radiography, thereby aiding in the diagnostic evaluation of lumbar spondylolysis.</p>","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 2","pages":"263-268"},"PeriodicalIF":1.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13077759/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147692348","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":"Hydrocephalus After Myelography in a Patient with a Cauda Equina Spinal Tumor: A Case Report.","authors":"Sotaro Takagi, Jun Tanaka, Masaya Nagatomo, Kenji Obayashi, Masatoshi Naito, Takuaki Yamamoto","doi":"10.22603/ssrr.2025-0269","DOIUrl":"10.22603/ssrr.2025-0269","url":null,"abstract":"","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 1","pages":"147-150"},"PeriodicalIF":1.2,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12895176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146202517","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":"Practical Strategies for Bone Graft Selection in Spinal Fusion: A Narrative Review with Regional Perspectives.","authors":"Masashi Miyazaki, Tetsutaro Abe, Noriaki Sako, Nobuhiro Kaku","doi":"10.22603/ssrr.2025-0297","DOIUrl":"10.22603/ssrr.2025-0297","url":null,"abstract":"<p><strong>Introduction: </strong>Successful spinal fusion depends on achieving reliable arthrodesis, and bone graft selection is a critical determinant of outcomes. Although autologous iliac crest bone graft remains the biological gold standard, limitations such as donor-site morbidity and insufficient volume have prompted the use of alternatives, including allograft, demineralized bone matrix (DBM), hydroxyapatite, and β-tricalcium phosphate. The introduction of biologics-such as recombinant human bone morphogenetic protein-2 (rhBMP-2) and cell- or peptide-based constructs-has further expanded grafting options internationally. However, in Japan, the clinical use of biologics remains unapproved, and allograft availability is restricted, necessitating reliance on autograft, DBM, and ceramic substitutes.</p><p><strong>Methods: </strong>A narrative review of recent clinical and experimental studies was conducted, emphasizing graft performance across cervical, lumbar, anterior/lateral, multilevel, and minimally invasive procedures. Practical considerations, including cost, storage, supply stability, and regional regulatory constraints, were integrated into the analysis.</p><p><strong>Results: </strong>Graft performance varied substantially according to surgical context. DBM and ceramic grafts often achieved satisfactory outcomes in cervical fusion, whereas lumbar fusion required mechanically robust extenders. Multilevel and deformity correction surgeries demanded blended strategies, while minimally invasive procedures benefited from moldable DBM and granular ceramics. Cost-effectiveness and logistical feasibility strongly influenced material selection. In Japan, the lack of rhBMP-2 approval and limited bone bank infrastructure further constrained options, reinforcing pragmatic combinations such as \"autograft plus ceramics\" or \"DBM plus ceramics.\"</p><p><strong>Conclusions: </strong>No single graft material is universally optimal. Reliable spinal fusion requires context-specific selection and combination strategies tailored to biological, mechanical, and regional factors. In Japan, strengthening bone bank systems and establishing robust domestic clinical evidence are essential. Future integration of regenerative grafts and next-generation biomaterials will require careful regulatory adaptation and cost-effectiveness validation.</p>","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 3","pages":"322-330"},"PeriodicalIF":1.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13255119/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148253246","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":"The Impact of Sarcopenia on Clinical Outcomes after Lumbar Decompression Surgery.","authors":"Yukitoshi Shimamura, Masahiro Kanayama, Fumihiro Oha, Michihaya Kono, Shogo Fukase, Kohei Shiota, Shotaro Fukada, Tsutomu Endo, Tomoyuki Hashimoto, Norimasa Iwasaki","doi":"10.22603/ssrr.2025-0294","DOIUrl":"10.22603/ssrr.2025-0294","url":null,"abstract":"<p><strong>Background: </strong>Sarcopenia is known as a risk factor for poor outcomes. However, its association with clinical outcomes after spinal surgery remains unclear. The purpose of this study was to investigate the impact of sarcopenia on clinical outcomes after lumbar decompression surgery using the Asian Working Group of Sarcopenia (AWGS) 2019 criteria.</p><p><strong>Methods: </strong>A total of 135 patients who underwent lumbar decompression surgery were included in this study. Clinical outcomes were assessed preoperatively and at the one-year follow-up, including the Visual Analog Scale (VAS) for lumbar pain, VAS for leg pain, VAS for leg numbness, the Oswestry Disability Index (ODI), the Roland-Morris Disability Questionnaire (RDQ), and the satisfaction rate. Patients were divided into three groups: the normal, sarcopenia, and severe sarcopenia groups, according to the AWGS 2019 criteria.</p><p><strong>Results: </strong>The proportion of patients with sarcopenia was 27.4% and that of severe sarcopenia was 11.5%. The body mass index in the normal group was higher than in the sarcopenia and severe sarcopenia groups. Improvement in clinical outcomes was observed in all three groups. Preoperatively, ODI and RDQ in both sarcopenia groups were higher than those of the normal group; this difference remained at one year postoperatively.</p><p><strong>Conclusions: </strong>Lumbar decompression surgery effectively reduces lumbar pain, leg pain, and leg numbness, but patients with sarcopenia might be more likely to experience persistent functional impairments compared to those without sarcopenia.</p>","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 3","pages":"417-424"},"PeriodicalIF":1.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13255117/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148253304","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":"O-Arm Navigated En Bloc Resection of a Paraspinal Malignant Peripheral Nerve Sheath Tumor Involving the Thoracic Spine: A Case Report.","authors":"Keisuke Ishikawa, Takahiro Onoki, Ko Hashimoto, Kohei Takahashi, Ken-Ichiro Yahata, Junya Kusakabe, Tomonori Kawaharada, Haruo Kanno, Mika Watanabe, Shin Hitachi, Toshimi Aizawa","doi":"10.22603/ssrr.2025-0201","DOIUrl":"10.22603/ssrr.2025-0201","url":null,"abstract":"","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 2","pages":"311-314"},"PeriodicalIF":1.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13077747/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147692343","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":"Reply to the Letter to the Editor by Kawamoto et al.","authors":"Noriaki Yokogawa, Satoshi Kato, Satoru Demura","doi":"10.22603/ssrr.2025-0364","DOIUrl":"10.22603/ssrr.2025-0364","url":null,"abstract":"","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 2","pages":"320-321"},"PeriodicalIF":1.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13077754/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147692334","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":"Lower Limb Phase Angle Correlates Most with Locomotive Syndrome and Walking Function in Patients with Lumbar Spinal Stenosis: A Retrospective Study.","authors":"Suguto Futami, Ryuki Hashida, Ryota Otsubo, Shinji Morito, Hiroo Matsuse, Kimiaki Yokosuka, Kimiaki Sato, Koji Hiraoka","doi":"10.22603/ssrr.2025-0210","DOIUrl":"10.22603/ssrr.2025-0210","url":null,"abstract":"<p><strong>Introduction: </strong>Locomotive syndrome is characterized by reduced mobility due to musculoskeletal disorders. Lumbar spinal stenosis (LSS) primarily causes locomotive syndrome, and its severity is associated with its progression. The phase angle (PhA) has gained attention as an indicator of physical function and nutritional status. Previous studies indicate associations between whole-body PhA and physical function and quality of life in patients with LSS. However, the relationship between site-specific PhAs and locomotive syndrome remains unaddressed. This study examined the association between regional PhA and locomotive syndrome in patients with LSS.</p><p><strong>Methods: </strong>We enrolled 133 patients with LSS and assessed their age, sex, body mass index (BMI), prognostic nutritional index (PNI), life space assessment, handgrip strength, timed up-and-go test (TUG), and PhA values (whole body, upper limbs, trunk, and lower limbs). Locomotive syndrome was evaluated using the 25-question Geriatric Locomotive Function Scale (GLFS-25). Spearman's rank correlation analysis was performed to evaluate the relationship between PhA and GLFS-25 scores. Multiple linear regression analysis was conducted to assess independent associations, adjusting for age, sex, BMI, disease duration, type of neurological classification (radicular, cauda equina, and mixed), skeletal muscle mass index, PNI, handgrip, and TUG as covariates.</p><p><strong>Results: </strong>Lower-limb PhA showed the strongest negative correlation with GLFS-25 (ρ=-0.363, p<0.001). In the multiple regression analysis, lower-limb PhA remained significantly associated with the GLFS-25 score (β=-0.224, 95% confidence interval: -11.69 to -0.224, p=0.044), with a model R² of 0.29. No significant associations were found for the whole-body, upper-limb, or trunk-PhA.</p><p><strong>Conclusions: </strong>Lower-limb PhA is independently associated with locomotive syndrome severity in patients with LSS and may reflect lower limb function, such as walking speed, and may serve as a useful site-specific indicator for assessing locomotive syndromes.</p>","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 2","pages":"269-275"},"PeriodicalIF":1.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13077739/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147692384","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":"Readability of Online Patient Education Materials for Endoscopic Spine Surgery.","authors":"Matthew Meade, Mark Miller, Ruchir Nanavati, William DiCiurcio, Maneesha Palakurthi, Victor Hsu, Mark F Kurd, I David Kaye, Gregory D Schroeder, Christopher Kepler, Barrett Woods","doi":"10.22603/ssrr.2025-0273","DOIUrl":"10.22603/ssrr.2025-0273","url":null,"abstract":"<p><strong>Introduction: </strong>Patients frequently use internet-based resources to seek information. Endoscopic spine surgery is extensively marketed on the internet, with purported benefits over traditional open techniques. Previous literature has recommended that the readability of patient education materials (PEM) should not exceed the 6th-grade reading level to optimize health literacy. This study aims to evaluate the readability of online PEMs concerning endoscopic spine surgery.</p><p><strong>Methods: </strong>A Google search query was performed using the term \"Endoscopic spine surgery patient information.\" The first 25 websites meeting study inclusion criteria were analyzed for readability using Flesch-Kincaid, average reading level consensus, Gunning Fog, Coleman-Liau, SMOG, and Linsear Write indices. Descriptive statistics were reported.</p><p><strong>Results: </strong>The mean average reading level was 12.8 (1.68). The mean Flesch-Kincaid Reading Ease score was 37.6 (11.1). The mean Gunning Fog Score was 14.7 (1.92), Flesch-Kincaid grade level was 12.2 (2.56), Coleman-Liau was 14.0 (1.82), SMOG 11.6 (2.07), Automated Readability Index was 12.9 (3.11), and Linsear Write was 11.8 (2.21). Zero of the 25 included PEMs was evaluated to be below the recommended sixth-grade reading level. Four of the PEMs were considered General Health Information, and 21 were considered Clinical Practice. No differences were found between Clinical Practice and General Health Information websites (p>0.05).</p><p><strong>Conclusions: </strong>Creating appropriate PEMs is integral to achieving optimal health literacy. The current readability of the most accessible PEMs related to endoscopic spine surgery is inadequate. As it stands, many patients may not appropriately comprehend the description of their anticipated surgery.</p>","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 2","pages":"204-210"},"PeriodicalIF":1.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13077741/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147692368","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":"Comment on \"Analysis of skeletal-related events in a liaison treatment for metastatic spinal tumors: A 10-year retrospective study\".","authors":"Shyam Sundar Sah, Abhishek Kumbhalwar","doi":"10.22603/ssrr.2025-0344","DOIUrl":"10.22603/ssrr.2025-0344","url":null,"abstract":"","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 3","pages":"529-530"},"PeriodicalIF":1.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13255129/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148253199","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":"Effect of Cyanoacrylate Microbial Sealant on Intraoperative Bacterial Contamination in Spine Surgery: A Prospective Consecutive Study.","authors":"Kazuyoshi Kobayashi, Koji Sato, Yoshinori Morita","doi":"10.22603/ssrr.2025-0239","DOIUrl":"10.22603/ssrr.2025-0239","url":null,"abstract":"<p><strong>Introduction: </strong>Surgical site infection (SSI) remains a significant complication in spinal surgery, particularly in instrumented procedures. While modern skin antisepsis and antibiotic prophylaxis reduce infection risk, microbial ingress from residual skin flora persists. Cyanoacrylate-based microbial sealants have shown promise in other surgical fields, but their efficacy in spinal surgery remains unclear. This study aimed to evaluate whether a cyanoacrylate microbial sealant could reduce postoperative drain colonization, an established surrogate marker for early bacterial contamination.</p><p><strong>Methods: </strong>A prospective study was conducted on 160 consecutive spinal surgeries at a single tertiary spine center. Patients were divided into two groups: 80 received standard skin preparation alone (control), and 80 received additional application of a microbial sealant (Guardiseal) after skin preparation. Drain-tip cultures were obtained upon removal (average postoperative day 2) and analyzed microbiologically. The primary outcome was the rate of positive drain-tip culture (≥20 colony-forming units); secondary outcomes included SSI incidence within 90 days. Standard perioperative protocols were maintained across both groups.</p><p><strong>Results: </strong>Positive drain-tip cultures occurred in 8 of 160 cases (5.0%), with a significantly lower rate in the sealant group than in the control group (1 of 80 [1.3%] vs. 7 of 80 [8.8%], p=0.029). SSI was confirmed in two patients (one superficial, one deep), both microbiologically concordant with drain-tip cultures. The sensitivity and negative predictive value of drain-tip cultures for SSI were 100% in both groups; the positive predictive value was 100% in the sealant group and 29% in the control group. No adverse effects or workflow issues were observed with sealant use.</p><p><strong>Conclusions: </strong>Use of a cyanoacrylate microbial sealant in spinal surgery significantly reduced postoperative drain colonization without adverse effects. While SSI rates remained unchanged, the microbiological benefits suggest that sealants may serve as a valuable adjunct to infection prevention strategies. Further large-scale, randomized studies are warranted.</p>","PeriodicalId":22253,"journal":{"name":"Spine Surgery and Related Research","volume":"10 2","pages":"284-289"},"PeriodicalIF":1.6,"publicationDate":"2025-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13077744/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147692381","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}