World neurosurgery最新文献

Impact of Needle-Tip Depth on Cement Leakage in Percutaneous Vertebroplasty: A Clinical and Finite Element Analysis. 针尖深度对经皮椎体成形术中水泥渗漏的影响：临床和有限元分析。

IF 2.1 4区医学

World neurosurgery Pub Date : 2025-07-30 DOI: 10.1016/j.wneu.2025.124329

Yuqing Jiang, Hao You, Wei Jiang, Nanwei Xu, Luming Nong, Gongming Gao, Yifei Shen, Long Han

{"title":"Impact of Needle-Tip Depth on Cement Leakage in Percutaneous Vertebroplasty: A Clinical and Finite Element Analysis.","authors":"Yuqing Jiang, Hao You, Wei Jiang, Nanwei Xu, Luming Nong, Gongming Gao, Yifei Shen, Long Han","doi":"10.1016/j.wneu.2025.124329","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124329","url":null,"abstract":"Purpose: The purpose of this study was to explore the optimal needle-tip depth through conventional percutaneous vertebroplasty (PVP) and further analyze the correlation between needle-tip depth and anterior cement leakage in osteoporotic vertebral compression fractures (OVCF).Methods: A total of 560 patients with PVP were retrospectively analyzed, and they were stratified into a shallow (needle-tip at 2/3-3/4 depth, n=291) and deep placement group (3/4-7/8 depth, n=269). The clinical outcomes and anterior leakage rates were compared. Biomechanical parameters, including symmetric cement diffusion, flow velocity, anterior wall arrival time (AWAT), and contact pressure, were derived from finite element analysis (FEA).Results: Anterior leakage risk was significantly higher with deep placement (p=0.005). FEA demonstrated increased distal diffusion asymmetry fraction, decreased anterior wall arrival time, increased cement flow velocity, and increased contact pressure for the deep insertion (all p<0.0001). Risk of leakage was particularly elevated in the type 4 DGOU-OF fracture group when placed deep (72.92%vs.29.17%, p<0.001).Conclusions: Greater amount of cement septum extension during percutaneous vertebroplasty increases anterior cement leakage risk, especially in OF type 4 fractures, suggestive that practitioners should be cautious about controlling needle-depth in order to effectively minimize complications.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124329"},"PeriodicalIF":2.1,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144765591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting Recurrence of Blood Blister-Like Aneurysms: The Importance of Aneurysmal Neck Area. 预测血泡样动脉瘤的复发：动脉瘤颈部区域的重要性。

IF 2.1 4区医学

World neurosurgery Pub Date : 2025-07-29 DOI: 10.1016/j.wneu.2025.124334

Cheng-Chih Hsieh, Hsin-Fan Chiang, An-Bang Zeng, Cheng-Han Chan, Ching-Chia Huang, Chun-Chao Huang

{"title":"Predicting Recurrence of Blood Blister-Like Aneurysms: The Importance of Aneurysmal Neck Area.","authors":"Cheng-Chih Hsieh, Hsin-Fan Chiang, An-Bang Zeng, Cheng-Han Chan, Ching-Chia Huang, Chun-Chao Huang","doi":"10.1016/j.wneu.2025.124334","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124334","url":null,"abstract":"Background: Blood blister-like aneurysms (BBAs) are distinct aneurysms that mostly develop as small, wide-based structures at the supra-clinoid segment of the internal carotid artery, often leading to subarachnoid hemorrhage and causing diagnostic and therapeutic challenges. This study aimed to identify the diagnostic indicators associated with postoperative recurrence of BBAs.Methods: We retrospectively evaluated the clinical history, angiographic features, three-dimensional parameters, treatment methods, and outcomes of 23 patients with BBA treated at our center. Cases were categorized into three outcomes: no recurrence, stable recurrence, and progressive recurrence, and these groups were compared.Results: Significant differences were observed in the width, neck length, and neck area between the no recurrence and recurrence groups. The progressive recurrence group had a larger neck area. The no recurrence and stable recurrence groups had higher aspect and K ratios.Conclusion: Our research highlighted that these parameters could be potential indicators of aneurysm recurrence. Furthermore, our findings suggested that patients with a larger neck area, lower aspect ratio, and K ratio might require additional intervention to prevent aneurysm recurrence.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124334"},"PeriodicalIF":2.1,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144761569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extended retrosigmoid craniotomy for resection of a cochlear schwannoma. 乙状结肠后扩展开颅术切除耳蜗神经鞘瘤。

IF 2.1 4区医学

World neurosurgery Pub Date : 2025-07-28 DOI: 10.1016/j.wneu.2025.124326

Redi Rahmani, Lea Scherschinski, Anthony M Asher, Shawn M Stevens, Michael T Lawton

{"title":"Extended retrosigmoid craniotomy for resection of a cochlear schwannoma.","authors":"Redi Rahmani, Lea Scherschinski, Anthony M Asher, Shawn M Stevens, Michael T Lawton","doi":"10.1016/j.wneu.2025.124326","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124326","url":null,"abstract":"Cochlear schwannomas are a rare subset of schwannomas arising from the cochlear nerve within the cochlea or internal auditory canal.1-5 These tumors can present with posterior displacement of the facial nerve, making facial nerve preservation a more technically demanding goal during surgery.6-8 This video describes a woman in her early 50s presenting with right-sided complete hearing loss and thought to have a vestibular schwannoma extending into the internal auditory canal. Institutional review board approval was not required for this case report. Patient consent was obtained. The patient underwent a right extended retrosigmoid craniotomy. Intraoperatively, following cerebrospinal fluid release and cerebellopontine angle exposure, the tumor capsule was stimulated to identify the facial nerve. This early stimulation revealed the facial nerve was posteriorly displaced and splayed over the tumor's back wall. Dissection planes were developed superiorly and inferiorly along the nerve, allowing for careful central debulking of the tumor through these working windows. The facial nerve was identified in continuity from the brainstem, crossing under the cochlear nerve and adhering to the tumor's back wall. Because of the nerve's close adherence to the tumor, a thin layer of the tumor was left to protect the nerve. Postoperatively, the patient exhibited House-Brackmann grade 2 facial nerve function without new neurological deficits. This case highlights key surgical techniques for schwannoma resection with posterior facial nerve displacement, emphasizing the importance of early facial nerve stimulation, meticulous debulking around the facial nerve using multiple dissection corridors, and careful balancing of complete resection with facial nerve preservation.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124326"},"PeriodicalIF":2.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144754623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Air In the Spine: A Rare Gas-Filled Cyst. 脊柱中的空气：一种罕见的充气囊肿。

IF 2.1 4区医学

World neurosurgery Pub Date : 2025-07-28 DOI: 10.1016/j.wneu.2025.124330

Ellie D Gabriel, Ben Gu, Brendan F Judy

引用次数: 0

Multimodal Localization using Smartphone Augmented Reality Combined with Brain Surface Morphology for Surgical Removal of Supratentorial Lesions. 使用智能手机增强现实结合脑表面形态学的多模态定位用于手术切除幕上病变。

IF 2.1 4区医学

World neurosurgery Pub Date : 2025-07-28 DOI: 10.1016/j.wneu.2025.124333

Xiaohu Wang, Luoning Shi, Yong Liu, Kuo Li, Junjun Li, Ning Wang, Qiang Meng, Huanfa Li, Qian Song, Ping Mao, Ke Gao, Xiaobin Bai, Wei Chen, Tuo Wang, Gang Bao, Hua Zhang, Maode Wang, Changwang Du

{"title":"Multimodal Localization using Smartphone Augmented Reality Combined with Brain Surface Morphology for Surgical Removal of Supratentorial Lesions.","authors":"Xiaohu Wang, Luoning Shi, Yong Liu, Kuo Li, Junjun Li, Ning Wang, Qiang Meng, Huanfa Li, Qian Song, Ping Mao, Ke Gao, Xiaobin Bai, Wei Chen, Tuo Wang, Gang Bao, Hua Zhang, Maode Wang, Changwang Du","doi":"10.1016/j.wneu.2025.124333","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124333","url":null,"abstract":"Background: Augmented reality (AR) has been widely used in neurosurgery in recent years. The combination of AR and brain surface morphology for localization has not been reported. The aim of this work was to report the outcomes of combined method for locating supratentorial lesions in neurosurgery.Methods: After multimodal image registration, brain tissue, the lesion, and blood vessels were reconstructed using a three-dimensional (3D) Slicer. AR was conducted using a smartphone application named Persp 3D to project intracranial lesions on the scalp. The incision and size of the craniotomy were designed according to the location of the lesions. After craniotomy, the lesions were precisely located using brain surface morphology. Three types of morphology were used to localize the lesions: 1) the morphology of sulci and gyri; 2) superficial cerebral veins; and 3) combination of both. Then, the lesions were resected. Postoperative magnetic resonance imaging confirmed the extent of the resection.Results: Of the 34 patients included in this study, 13 (38.2%) had gliomas, 15 (44.1%) had focal cortical dysplasia, and six (17.6%) had cavernous hemangiomas. The first type of morphology was used in eight (23.5%) patients, the second type in five (14.7%), and the third in 21 (61.8%). In all cases, the lesions were accurately located and completely removed. No complications were recorded.Conclusions: AR combined with brain surface morphology could accurately locate lesions. This combined approach is convenient to use, and helpful for planning craniotomy and removing lesions.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124333"},"PeriodicalIF":2.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144754624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Paraspinal Muscle Fat Infiltration Predicts Vertebral Refracture After Kyphoplasty: Development and Validation of a Novel Nomogram Model. 棘旁肌脂肪浸润预测后凸成形术后椎体再骨折：一种新的Nomogram模型的发展和验证。

IF 2.1 4区医学

World neurosurgery Pub Date : 2025-07-25 DOI: 10.1016/j.wneu.2025.124325

Chongxuan Zhuo, Mingyang Huang, Guoqing Wang, Ming Luo, Wei Jin

{"title":"Paraspinal Muscle Fat Infiltration Predicts Vertebral Refracture After Kyphoplasty: Development and Validation of a Novel Nomogram Model.","authors":"Chongxuan Zhuo, Mingyang Huang, Guoqing Wang, Ming Luo, Wei Jin","doi":"10.1016/j.wneu.2025.124325","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124325","url":null,"abstract":"Background: Vertebral refracture following percutaneous kyphoplasty (PKP) remains a significant challenge in managing osteoporotic vertebral compression fractures (OVCF). This study aimed to develop and validate a novel nomogram model integrating paraspinal muscle fat infiltration (FI), bone mineral density (BMD), and vertebral parameters to predict refracture risk post-PKP.Methods: A retrospective cohort of 150 OVCF patients undergoing PKP was analyzed. Paraspinal FI was quantified via preoperative MRI, and BMD was measured using dual-energy X-ray absorptiometry. Refracture was defined as recurrent or adjacent vertebral fractures within 1-year post-PKP. Multivariate logistic regression identified predictors, and a nomogram was constructed. Discriminative performance was assessed using the area under the ROC curve.Results: Refracture occurred in 16 patients (10.7%). Multivariate analysis identified FI ≥25% at the fractured vertebra as the strongest independent predictor (OR=14.24, 95% CI:1.57-129.02, P=0.018). The nomogram, incorporating FI, BMD, and vertebral parameters, demonstrated excellent discrimination (AUC=0.88, 95% CI:0.82-0.94) and calibration. FI exhibited an inverse correlation with lumbar and femoral neck BMD (P<0.01), highlighting synergistic muscle-bone deterioration.Conclusion: Paraspinal FI is a critical biomarker for post-PKP refracture risk. The nomogram model provides a practical tool for personalized risk stratification, emphasizing the integration of muscle quality assessment into spinal fragility management.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124325"},"PeriodicalIF":2.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144733571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modified-Subperineurial Cochlear and Facial Nerve Preserving Technique via Translabyrinthine Approach: Nuances for Large Vestibular Schwannomas. 经迷路入路改良围神经下耳蜗和面神经保留技术：大前庭神经鞘瘤的细微差别。

IF 2.1 4区医学

World neurosurgery Pub Date : 2025-07-25 DOI: 10.1016/j.wneu.2025.124324

Mehdi Khaleghi, Lucas P Carlstrom, Robert J Macielak, Oliver F Adunka, Daniel M Prevedello

{"title":"Modified-Subperineurial Cochlear and Facial Nerve Preserving Technique via Translabyrinthine Approach: Nuances for Large Vestibular Schwannomas.","authors":"Mehdi Khaleghi, Lucas P Carlstrom, Robert J Macielak, Oliver F Adunka, Daniel M Prevedello","doi":"10.1016/j.wneu.2025.124324","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124324","url":null,"abstract":"Background: The histologic composition of a vestibular schwannoma (VS) capsule includes residual nerve fibers and perineurium of the vestibular nerve of origin. Despite the perineurium being thin, an accurate subperineurial dissection plane can be established between the tumor parenchyma and residual nerve fibers, aiming to preserve both facial and cochlear nerve perineurium.Methods: The authors detail the key surgical steps of a modified- subperineurial dissection technique (MSPT), involving partial severing of the vestibular nerve of origin to identify the proper dissection plane for resecting a large VS via translabyrinthine approach (TLA). The goal was the anatomic preservation of the cochlear nerve and optimizing functional facial nerve results.Results: The patient presented with a left-sided non-serviceable hearing. A near-total resection was achieved through the technique, and facial and cochlear nerves were anatomically preserved. The postoperative course involved normal facial movement and a tiny residual tumor over the brainstem on MRI. The patient was considered a potential candidate for delayed hearing-rehabilitation device.Conclusion: Adopting subperineurial dissection could be challenging in larger tumor sizes due to difficulties with the residual capsule obscuring adjacent distorted anatomy. Therefore, in many cases of large tumors resected via the TLA, an extracapsular approach is frequently used, as cochlear nerve preservation isn't attempted. We find that in these instances, MSPT can be utilized to preserve the cochlear nerve integrity for possible future cochlear implantation, and still obtain a favorable extent of resection.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124324"},"PeriodicalIF":2.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144733570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surgery for Spinal Metastases of GBM. GBM脊柱转移的手术治疗。

IF 2.1 4区医学

World neurosurgery Pub Date : 2025-07-25 DOI: 10.1016/j.wneu.2025.124327

Vigneshwar Venkatesh, Seevakan Chidambaram, Alejandro N Santos, Bashar Dawoud, Nimit Singhal, Jonathan Hogan-Doran, Peter Gorayski, Amal Abou-Hamden

{"title":"Surgery for Spinal Metastases of GBM.","authors":"Vigneshwar Venkatesh, Seevakan Chidambaram, Alejandro N Santos, Bashar Dawoud, Nimit Singhal, Jonathan Hogan-Doran, Peter Gorayski, Amal Abou-Hamden","doi":"10.1016/j.wneu.2025.124327","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124327","url":null,"abstract":"Background: Glioblastoma multiforme (GBM) is the most common primary malignant brain tumor in adults, accounting for 12-20% of intracranial neoplasms. Spinal metastases from GBM are rare, occurring in only 0.4-2.0% of cases. Due to their rarity, the role of surgical resection remains poorly defined, particularly regarding survival and symptom control. This study presents an illustrative case and a systematic review evaluating outcomes of surgical intervention in symptomatic spinal GBM metastases.Methods: We report a 56-year-old female with intracranial GBM who developed symptomatic spinal metastases two years post-treatment. She underwent T4-T6 laminectomy with gross total resection of a thoracic spinal lesion. A systematic literature search was performed in MEDLINE (OVID), Embase (OVID), and PubMed. Two independent reviewers screened studies using the Covidence platform, and the process followed PRISMA guidelines. Primary outcomes included survival time after spinal metastasis diagnosis, symptom-free survival, and post-surgical symptom improvement.Results: The patient experienced significant symptom relief postoperatively but deteriorated rapidly, passing away four months later. The review included 40 studies. Surgical resection yielded a symptom improvement rate of 62%, compared to 5% in non-resection cases. Mean survival was 9.5 months in the resection group versus 6.45 months in the non-resection group. Symptom-free survival was inconsistently reported.Conclusions: Surgical resection may offer palliative benefit and modest survival advantage in selected patients with spinal GBM metastases. Despite a poor overall prognosis, symptom control appears improved with surgery. Further research is warranted to guide evidence-based treatment strategies.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124327"},"PeriodicalIF":2.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144733572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of modified encephalo-duro-arterial-synangiosis on periventricular anastomosis in pediatric patients with moyamoya disease. 改良脑硬动脉合血管术对小儿烟雾病患者脑室周围吻合的影响。

IF 1.9 4区医学

World neurosurgery Pub Date : 2025-07-24 DOI: 10.1016/j.wneu.2025.124316

Masaki Morishige, Kouhei Onishi, Mitsuhiro Anan, Yukari Kawasaki, Hirotaka Fudaba, Daigo Aso, Wataru Matsushita, Kumpei Takao, Masayuki Yanagida, Kumi Murata, Nobuhiro Hata, Keisuke Ishii, Minoru Fujiki

{"title":"Effect of modified encephalo-duro-arterial-synangiosis on periventricular anastomosis in pediatric patients with moyamoya disease.","authors":"Masaki Morishige, Kouhei Onishi, Mitsuhiro Anan, Yukari Kawasaki, Hirotaka Fudaba, Daigo Aso, Wataru Matsushita, Kumpei Takao, Masayuki Yanagida, Kumi Murata, Nobuhiro Hata, Keisuke Ishii, Minoru Fujiki","doi":"10.1016/j.wneu.2025.124316","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124316","url":null,"abstract":"Objective: Periventricular anastomosis (PA) is a risk factor for hemorrhage in moyamoya disease. In pediatric moyamoya disease, the onset of hemorrhage after adulthood worsens its long-term prognosis. At our institution, modified encephalo-duro-arterial-synangiosis (EDAS) is the first line treatment for pediatric cases. Herein, we examined the outcome of modified EDAS and its effect on the development of PA.Methods: A total of 21 patients who underwent revascularization for pediatric moyamoya disease between March 2010 and December 2022 were included. Image analysis was performed on 36 hemispheric surgical cases followed up for ≥2 year postoperatively. The degree of PA was classified as grades 0-2 at four sites: lenticulostriate (LSA), thalamic (THA), anterior choroidal (AChA), and posterior choroidal (PChA) anastomosis, and evaluated using a total score of 8 points.Results: Of 36 surgical cases, perioperative complications included TIA, asymptomatic stroke, symptomatic stroke, and postoperative epidural hematoma/infection in 8, 2, 1, and 1 cases, respectively. At a median follow-up of 87.2 months, 34 hemispheres (94.4%) remained event-free. The grade 2 PA observed in each region (LSA 47.2%, THA 16.7%, AChA 38.9%, PChA 30.6%) preoperatively showed regression after revascularization in 70.6% for LSA, 100% for THA, 78.6% for AChA, and 90.9% for PChA, and the PA score improved significantly from 3.7 to 2.0 (P = 0.0001).Conclusion: Modified EDAS in pediatric patients with moyamoya disease was associated with transient perioperative complications and a favorable long-term prognosis. In addition, imaging showed PA regression, which may effectively prevent late hemorrhagic complications.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124316"},"PeriodicalIF":1.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144718774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiolucent headholder hybrid pins made of carbon fiber reinforced plastics and aluminum for intraoperative image evaluations. 用于术中图像评估的碳纤维增强塑料和铝制成的透光头固定器混合销钉。

IF 1.9 4区医学

World neurosurgery Pub Date : 2025-07-24 DOI: 10.1016/j.wneu.2025.124323

Kohei Morita, Hirokazu Koseki, Ryosuke Mori, Kenji Tsuchida, Yasuhiro Furuta, Katsuhiro Oikawa, Kostadin Karagiozov, Yuichi Murayama

{"title":"Radiolucent headholder hybrid pins made of carbon fiber reinforced plastics and aluminum for intraoperative image evaluations.","authors":"Kohei Morita, Hirokazu Koseki, Ryosuke Mori, Kenji Tsuchida, Yasuhiro Furuta, Katsuhiro Oikawa, Kostadin Karagiozov, Yuichi Murayama","doi":"10.1016/j.wneu.2025.124323","DOIUrl":"https://doi.org/10.1016/j.wneu.2025.124323","url":null,"abstract":"Background: Computed tomography (CT) is the most widely applied intraoperative imaging technique in neurosurgery. However, tools for head fixation, especially headholder pins, are made of different materials, often with inadequate strength and radiolucency performance. None of the commercially available pins have both sufficient mechanical strength and radiolucency. Therefore, we aimed to develop and evaluate a novel approach to address this issue.Methods: We designed a hybrid-type headholder pin primarily composed of carbon fiber-reinforced plastic (CFRP) with an aluminum tip. We then compared its radiolucent performance and strength with existing pins using CT image evaluations and the The American Society for Testing and Materials (ASTM) F3395 mechanical tests.Results: The hybrid pin showed significantly fewer artifacts on qualitative image evaluation. The variations in CT brightness value for each pin were as follows (mean ± standard deviations): present study: 8.7 ± 3.2, CFRP with titanium alloy: 18.4 ± 4.2, sapphire: 22.4 ± 13.8. This hybrid pin showed significantly lower range of the density in Hounsfield Unit for each column than other existing pins (P < 0.01). It also exhibited sufficient durability to withstand loads in both axial (360.0 N) and lateral directions (111.0 N), which is definitely sufficient to sustain the loads during clinical-use when compared with existing pins.Conclusions: The hybrid pin showed reduced artifacts and sufficient strength compared to existing pins. This device provides better quality intraoperative imaging for use as an external fixation device.","PeriodicalId":23906,"journal":{"name":"World neurosurgery","volume":" ","pages":"124323"},"PeriodicalIF":1.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144718778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0