Posterior Fossa Decompression Combined with Resection of the Cerebellomedullary Fissure Membrane and Expansile Duraplasty: A Radical and Rational Surgical Treatment for Arnold–Chiari Type I Malformation

This study aims to introduce a new surgical procedure for the treatment of Arnold–Chiari type I malformation (ACM-1) and to compare its effectiveness with the techniques described in previous studies. We performed the following procedures: foramen magnum decompression combined with the removal of both the atlanto-occipital membrane, extended resection of the cerebellomedullary fissure arachnoid membrane, and artificial duraplasty to enlarge the membranic posterior fossa without resecting the cerebellar tonsils and syringosubarachnoid shunting. There were 21 ACM-1 patients: 12 cases had osteo-compression on the cerebellar hemisphere, 18 cases had thickened adhered fabric ring that stretched from arachnoid membrane to cerebellar hemisphere, and 15 cases with syringomyelia. The patients were followed up for 6 months to 3 years after the surgery. All patients showed a remarkable recovery of syringomyelia. There were no morbidity or death related to the surgery. Most of ACM-1 patients, the osteo- and membrane compression on cerebellar hemisphere and tonsil were observed during the operation. Therefore, decompression of foramen magnum and posterior craniocervical combined with the removal of cerebellomedullary fissure arachnoid membrane and placement of an artificial dural graft should be considered as a comprehensive option of minimally invasive surgery and rational and radical treatment of ACM-1. Our experience showed that, by using our procedure, shunting becomes no longer necessary in the treatment of ACM-1-associated syringomyelia.     

膝关节镜辅助微创手术治疗复杂性胫骨平台骨折的疗效分析

目的:探讨膝关节镜辅助微创手术治疗复杂性胫骨平台骨折的疗效。方法:搜集2013年2月-2015年1月期间我院收治的确诊为复杂性胫骨平台骨折患者104例,按照随机数字表法分为微创组和对照组,每组各52例。对照组采用传统切开复位钢板内固定术治疗,微创组采用膝关节镜辅助微创手术治疗;观察两组患者临床各项指标、膝关节功能HSS评分以及术后并发症发生率。结果:术后微创组下床活动时间、完全负重下地时间和骨折愈合时间显著低于对照组(P0.05);三个月后的关节活动度、一年后的膝关节功能优良率显著高于对照组(P0.05);术后微创组并发症发生率为9.62%(5/52),显著低于对照组的23.08%(12/52),差异具有统计学意义(P0.05)。结论:膝关节镜辅助微创手术治疗复杂性胫骨平台骨折,临床疗效显著,术后膝关节功能恢复好,并发症发生率低,值得临床推广应用。     

Poro-elastic modeling of Syringomyelia – a systematic study of the effects of pia mater,central canal,median fissure,white and gray matter on pressure wave propagation and fluid movement within the cervical spinal cord

Syringomyelia, fluid-filled cavities within the spinal cord, occurs frequently in association with a Chiari I malformation and produces some of its most severe neurological symptoms. The exact mechanism causing syringomyelia remains unknown. Since syringomyelia occurs frequently in association with obstructed cerebrospinal fluid (CSF) flow, it has been hypothesized that syrinx formation is mechanically driven. In this study we model the spinal cord tissue either as a poro-elastic medium or as a solid linear elastic medium, and simulate the propagation of pressure waves through an anatomically plausible 3D geometry, with boundary conditions based on in vivo CSF pressure measurements. Then various anatomic and tissue properties are modified, resulting in a total of 11 variations of the model that are compared. The results show that an open segment of the central canal and a stiff pia (relative to the cord) both increase the radial pressure gradients and enhance interstitial fluid flow in the central canal. The anterior median fissure, anisotropic permeability of the white matter, and Poisson ratio play minor roles.     

腹腔镜微创手术对胃穿孔患者的疗效及胃肠动力的影响

目的:探讨腹腔镜微创手术治疗胃穿孔患者的疗效及对胃肠动力的影响。方法:收集我院于2015年6月~2016年6月间收治的胃穿孔患者92例。通过随机数表法分为观察组及对照组各46例,给予观察组患者腹腔镜微创手术治疗,给予对照组患者开腹手术治疗,比较两组患者临床相关指标及胃肠动力指标,采用放射免疫法测定两组术前、术后第1h、1d、2d、3d血清中胃泌素(GAS)水平,统计两组患者并发症情况。结果:观察组患者术中出血量、住院时间均低于对照组,差异均有统计学意义(P0.05);观察组患者肠鸣音恢复时间、肛门排气时间均低于对照组,差异均有统计学意义(P0.05);观察组患者手术时间高于对照组,差异有统计学意义(P0.05)。两组患者术后第1d、2d、3d GAS水平均明显高于术前,且观察组患者均高于对照组,差异均有统计学意义(P0.05);观察组并发症发生率低于对照组,差异有统计学意义(P0.05)。结论:腹腔镜微创手术治疗胃穿孔具有出血量少,住院时间更短,胃肠动力恢复更快,并发症较少等多方面的优势,具有良好的应用前景。     

Quantitative Trait Loci (QTL) Study Identifies Novel Genomic Regions Associated to Chiari-Like Malformation in Griffon Bruxellois Dogs

Chiari-like malformation (CM) is a developmental abnormality of the craniocervical junction that is common in the Griffon Bruxellois (GB) breed with an estimated prevalence of 65%. This disease is characterized by overcrowding of the neural parenchyma at the craniocervical junction and disturbance of cerebrospinal fluid (CSF) flow. The most common clinical sign is pain either as a direct consequence of CM or neuropathic pain as a consequence of secondary syringomyelia. The etiology of CM remains unknown but genetic factors play an important role. To investigate the genetic complexity of the disease, a quantitative trait locus (QTL) approach was adopted. A total of 14 quantitative skull and atlas measurements were taken and were tested for association to CM. Six traits were found to be associated to CM and were subjected to a whole-genome association study using the Illumina canine high density bead chip in 74 GB dogs (50 affected and 24 controls). Linear and mixed regression analyses identified associated single nucleotide polymorphisms (SNPs) on 5 Canis Familiaris Autosomes (CFAs): CFA2, CFA9, CFA12, CFA14 and CFA24. A reconstructed haplotype of 0.53 Mb on CFA2 strongly associated to the height of the cranial fossa (diameter F) and an haplotype of 2.5 Mb on CFA14 associated to both the height of the rostral part of the caudal cranial fossa (AE) and the height of the brain (FG) were significantly associated to CM after 10 000 permutations strengthening their candidacy for this disease (P = 0.0421, P = 0.0094 respectively). The CFA2 QTL harbours the Sall-1 gene which is an excellent candidate since its orthologue in humans is mutated in Townes-Brocks syndrome which has previously been associated to Chiari malformation I. Our study demonstrates the implication of multiple traits in the etiology of CM and has successfully identified two new QTL associated to CM and a potential candidate gene.     

微创胸腔闭式引流精密可控负压吸引术治疗原发性自发性气胸的疗效及患者疼痛、氧化应激反应观察

摘要 目的：探究微创胸腔闭式引流精密可控负压吸引术治疗原发性自发性气胸（PSP）的疗效及对患者疼痛、氧化应激反应的影响。方法：选取2019年1月~2021年1月我院收治的PSP患者120例,以随机数表法分成研究组与对照组,各自60例。给予对照组微创胸腔常规闭式引流治疗,研究组则给予微创胸腔闭式引流精密可控负压吸引术治疗。比较两组患者的临床疗效,术后6 h、1 d及3 d的疼痛评分（VAS）,术前及术后1 d的血清氧化应激指标[超氧化物歧化酶（SOD）、丙二醛（MDA）]水平以及术后并发症发生情况。结果：研究组临床疗效的总有效率为91.67%,显著高于对照组的78.33%（P<0.05）,且研究组患者术后6 h、术后1 d以及术后3 d的VAS评分均显著低于对照组（P<0.05）。术后研究组患者SOD水平显著高于对照组（P<0.05）,同时MDA水平显著低于对照组（P<0.05）。另外研究组患者的总并发症发生率为3.33%,显著低于对照组的13.33%（P<0.05）。结论：微创胸腔闭式引流精密可控负压吸引术治疗PSP的疗效肯定,能减轻患者的疼痛程度及氧化应激反应,且能减少术后并发症的发生率。     

微创引流术与开颅术在硬脑膜外血肿患者围手术期的治疗体会及临床疗效评价

目的:分析微创引流术与开颅术在硬脑膜外血肿患者围手术期的治疗体会及临床疗效评价。方法:选取本院2015年1月至2016年10月期间诊断为硬脑膜外血肿的患者100例,随机均分成两组,即对照组和观察组。对照组采用常规开颅手术,观察组给予微创引流手术治疗。比较两组手术效果及治疗前后生活质量改善情况。结果:观察组手术效果优于对照组(P0.05);观察组颅脑缺损(0%)、再出血率(6%)明显低于对照组(12%,20%)(P0.05),观察组生活质量高于对照组(P0.05)。结论:与常规开颅术相比,微创引流术创伤小、恢复快、效果好,值得临床推广应用。     

枕大孔区减压环枕筋膜松解术治疗CMⅠ-SM的疗效分析

目的：回顾分析枕大孔区减压环枕筋膜松解术治疗Chiari畸形Ⅰ型合并脊髓空洞症（CMⅠ—SM）的疗效及其适应症。方法：随访71例行枕大孔区减压环枕筋膜松解术治疗的CMⅠ-SM患者,回顾手术疗效,利用多因素Logistic回归分析探讨病程时间（A）、是否伴有后颅窝畸形（B）、是否有增厚的环枕筋膜（C）及减压后脑脊液搏动情况（D）与疗效的关系,继而推断枕大孔区减压环枕筋膜松解术的适应症。结果：本组患者症状改善49例,占73．1％;稳定15例,占22.4％;恶化3例,占4．5％。A、B与疗效不具有统计学意义;C、D与疗效具有统计学意义。结论：枕大孔区减压环枕筋膜松解术是治疗CMⅠ-SM较为合理的术式;术中观察有增厚的环枕筋膜和（或）减压后脑脊液搏动改善良好可作为选择该术式的适应症。     

微创旋切术用于老年乳腺良性肿块患者对手术指标、应激反应和免疫功能的影响

摘要 目的：对比分析微创旋切术和传统开放手术对老年乳腺良性肿块患者手术指标、应激反应、免疫功能的影响及安全性。方法：收集我院2015年4月~2019年2月因乳腺良性肿块需手术治疗的老年患者148例,按不同手术方式分为观察组和对照组,每组74例。观察组予以微创旋切术,对照组予以传统开放手术,比较两组手术指标,手术前后应激反应、免疫功能,术后乳房美观性和并发症的发生情况。结果：观察组切口长度、手术时间、出血量、住院时间和术后疼痛评分分别为(2.35±1.45)cm、(18.27±4.51)min、(5.07±1.02)mL、(4.98±1.20)d和(2.88±1.13)分,均低于或短于对照组(P<0.05);术后血清去甲肾上腺素(NE)、肾上腺素(E)和皮质醇(Cor)水平分别为(71.03±3.02)ng/mL、(68.22±7.23)ng/mL和(101.82±13.29)mmol/L,均明显低于对照组(P<0.05);手术后免疫功能中CD4⁺、CD3⁺和CD4⁺/CD8⁺分别为(27.27±3.70)%、(44.87±6.13)%和(1.22±0.07),均显著高于对照组(P<0.05);术后乳房美观性优良率为98.6%,明显高于对照组(P<0.05),总并发症发生率为2.7%,显著低于对照组(P<0.05)。结论：与传统开放手术相比,微创旋切术用于老年乳腺良性肿块患者的效果较好,手术时间短,出血少,患者术后疼痛较轻,住院时间短,可有效保护患者的免疫功能,降低应激反应,安全性高。     

Quadrant通道下MIS-TLIF与传统术式治疗单节段腰椎退变性疾病的疗效比较

目的:对比分析Quadrant通道下微创椎间孔椎间融合术(MIS-TLIF)与传统开放经椎间孔椎间融合术(TLIF)治疗单节段腰椎退变性疾病的临床疗效和安全性。方法:选取2012年3月至2015年3月120例我院收治的120例单节段腰椎退变性疾病患者,并将其随机分为对照组和微创(MIS)组,每组各60例。对照组患者给予TLIF治疗,微创组给予MIS-TLIF治疗。观察和比较两组患者的手术情况,手术前后的视觉模拟评分(VAS)、Oswestry功能障碍指数(ODI),肌酸磷酸激酶(CPK)水平、椎间植骨融合率及并发症的发生情况。结果:微创组患者的切口长度、出血量、射线照射时间、下地活动时间以及住院时间均显著低于或短于对照组(P0.05);术后1周、6个月,微创组患者的VAS、ODI评分均显著低于对照组(P0.05);术后,两组患者的CPK水平出现剧烈上升,随后又逐渐下降,但同一时段微创组患者的CPK水平明显低于对照组(P0.05);微创组的椎骨性融合率为93.33%(56/60),显著低于对照组(85.00%,P0.05),且其神经损伤、硬膜囊破裂的发生率均显著低于对照组(P0.05),感染的发生率比较差异无统计学意义(P0.05)。结论:Quadrant通道下微创椎间孔椎间融合术治疗单节段腰椎退变性疾病的临床疗效明显优于传统开放经椎间孔椎间融合术,且创伤更小,患者康复更快,安全性更高。     

腔镜下Soave根治术与开腹改良Soave术治疗长段型先天性巨结肠患儿的疗效比较及对应激反应和控便功能的影响

摘要 目的：比较腔镜下Soave根治术与开腹改良Soave术治疗长段型先天性巨结肠（HD）患儿的疗效,观察两种术式对应激反应和控便功能的影响。方法：选取我院2017年4月～2020年9月期间收治的长段型HD患儿88例,根据手术方式的不同分为开腹组和微创组,例数分别为43例和45例。对比两组围术期指标、应激反应指标、控便功能和并发症发生情况。结果：微创组的术中失血量少于开腹组,手术时间、胃肠功能恢复时间、禁食时间、住院时间短于开腹组（P<0.05）,两组肠管切除长度组间对比无统计学差异（P>0.05）。两组患儿术后1 d心率（HR）、平均动脉压（MAP）较术前升高,血氧饱和度（SpO₂）较术前下降,但微创组HR、MAP低于开腹组,SpO₂高于开腹组（P<0.05）。两组患儿术后1年大便性状、排便次数、污粪、需要治疗（灌肠、药物、尿布）评分及Heikkinen总分均较术前升高,且微创组高于开腹组（P<0.05）。微创组的近期并发症总发生率和远期并发症总发生率均低于开腹组（P<0.05）。结论：与开腹改良Soave术相比,采用腔镜下Soave根治术治疗长段型HD患儿可缩短手术时间、禁食时间、住院时间、胃肠功能恢复时间,减少手术创伤,减轻机体应激反应,改善患儿控便功能,同时还可降低并发症发生率,效果较好。     

清咽滴丸药物冰块治疗甲状腺术后咽痛的疗效及对临床症状和睡眠质量的影响

摘要 目的：探讨清咽滴丸药物冰块治疗甲状腺术后咽痛的疗效,分析其对相关临床症状和睡眠质量的影响。方法：回顾性分析2019年4月至2021年8月期间广东省中医院甲状腺诊治中心收治的甲状腺术后咽痛患者240例的临床资料,根据不同的治疗方法分成三组,每组80例。对照组为药物组,给予清咽滴丸含服;实验I组为冰块组,给予25%高糖冰块含漱;实验II组为药冰组,给予自制清咽滴丸药物冰块含漱。观察比较三组患者治疗48 h后的临床疗效,治疗前和治疗48 h后的中医证候积分、深睡眠质量评分以及治疗前、治疗8 h、24 h和48 h后的视觉模拟评分法（VAS）评分。结果：实验II组治疗48 h后总有效率显著高于实验I组和对照组（P＜0.05）。三组患者治疗48 h后的中医证候积分和深睡眠质量评分均显著低于治疗前（P＜0.05）,三组患者治疗8 h、24 h、48 h后的VAS评分均显著低于治疗前（P＜0.05）,且实验II组治疗48 h后的中医证候积分和深睡眠质量评分均显著低于实验I组与对照组（P＜0.05）,实验II组治疗8 h、24 h、48 h后的VAS评分均显著低于实验I组与对照组（P＜0.05）。结论：清咽滴丸药物冰块治疗可有效缓解甲状腺术后咽痛及相关临床症状,改善患者睡眠质量,具有良好的临床应用价值。     

两种内固定方法治疗老年骨盆后环骨折的疗效对比及对血清应激因子和疼痛相关生化指标的影响

摘要 目的：对比3D导航下经皮骶髂关节螺钉内固定、后路微创重建钢板内固定两种内固定方法治疗老年骨盆后环骨折的疗效及对血清应激因子和疼痛相关生化指标的影响。方法：回顾性分析2016年7月~2020年9月期间我院收治的100例老年骨盆后环骨折患者的临床资料。根据手术方式的不同将患者分为A组（n=50,后路微创重建钢板内固定）和B组（n=50,3D导航下经皮骶髂关节螺钉内固定）。对比两组手术相关指标、疼痛情况、Majeed功能评分、血清应激因子和疼痛相关生化指标变化情况。结果：B组术后3 d、术后1个月、术后3个月、术后1年视觉疼痛模拟评分（VAS）评分低于A组（P<0.05）。B组术中出血量少于A组,住院时间、手术时间、手术切口长度短于A组,但X线暴露时间长于A组（P<0.05）。B组术后1年Majeed功能评分高于A组（P<0.05）。B组术后7 d促甲状腺激素（TSH）水平高于A组,皮质醇（Cor） 、肾上腺素（E）水平低于A组（P<0.05）。B组术后7 d 5-羟色胺（5-HT）、P物质（SP）、前列腺素E2（PGE2）水平低于A组（P<0.05）。A组、B组的并发症发生率组间对比无显著性差异（P>0.05）。结论：与后路微创重建钢板内固定治疗老年骨盆后环骨折患者相比,3D导航下经皮骶髂关节螺钉内固定具有创伤小、手术时间短、术中出血量少、疼痛减轻、应激反应轻等诸多优势,可促进患者术后恢复。     

3D打印技术辅助前侧微创入路手术治疗不稳定型骨盆骨折的临床疗效分析

目的:探讨3D打印技术辅助前侧微创入路手术治疗不稳定型骨盆骨折的临床疗效及安全性。方法:选择2014年8月到2017年2月在我院诊治的骨盆骨折患者78例作为研究对象,按照随机信封抽签原则分为观察组与对照组,每组各39例。对照组采用常规X线与CT进行手术设计,观察组采用3D打印技术进行手术设计,两组都给予前侧微创入路手术治疗,比较两组的手术时间、切口长度、骨折愈合时间、术中出血量、术中和术后并发症的发生情况及术后3个月的骨盆功能优良率。结果:所有患者都完成手术,无术中严重并发症发生,两组手术时间及切口长度对比差异无统计学意义(P0.05)。对照组的骨折愈合时间、术中出血量显著高于观察组(P0.05)。观察组术后并发症的发生率(5.1%)显著低于对照组(25.6%)(P0.05),术后3个月的骨盆功能优良率(97.4%)显著高于对照组(74.4%)(P0.05)。结论:与常规X线与CT前侧微创入路手术治疗比较,3D打印技术辅助前侧微创入路手术治疗不稳定型骨盆骨折可为患者提供安全、有效、个性化的治疗,减少术后并发症的发生,改善患者的骨盆功能。     

两种微创术式治疗老年混合痔的临床疗效比较

目的:比较两种微创手术方式治疗老年混合痔的临床疗效和安全性。方法:选取2012年10月至2013年4月在湖南中医药大学第一附属医院肛肠科住院的162例老年混合痔患者并随机分成治疗组82例和对照组80例,治疗组采用自动痔疮套扎(RPH)术+外痔切除术治疗,对照组采用痔上粘膜环切钉合(PPH)术+外痔切除术治疗,观察周期为21天,随访3年。观察并比较分析两组患者术后疼痛积分、手术时间、术中出血量、术后恢复时间、术后并发症情况及远期疗效。结果:治疗组手术时间、术中出血量、术后恢复时间、术后24 h疼痛积分、首次排便疼痛积分及术后并发症(出血、水肿)的发生率均明显短于或低于对照组,差异有统计学意义(P0.05)。两组的远期疗效相当,差异无统计学意义(P0.05)。结论:自动痔疮套扎(RPH)术治疗老年混合痔患者的近期疗效和安全性较粘膜环切钉合(PPH)术+外痔切除术更好,而远期疗效与其相当。     

计算机辅助设计修复先天性手部畸形的临床报告

目的:探讨计算机辅助设计修复先天性手部畸形的临床效果。方法:2015年2月到2019年4月选择在本院进行住院治疗的先天性手部畸形患者72例,根据随机数字表法分为研究组与对照组,各36例,对照组给予腹部带蒂复合组织瓣修复治疗,研究组在对照组修复的基础上给予基于3D打印技术的计算机辅助设计修复治疗,记录与报告两组预后。结果:所有患者都皮瓣修复成功,成功率为100.0%。研究组术后3个月的拇指侧偏、虎口挛缩、感染、血管危象等并发症发生率为5.6%,显著低于对照组的30.6%(P0.05)。研究组术后3个月的手部旋转功能优良率为97.2%,显著高于对照组的80.6%(P0.05)。研究组术后3个月的手部疼痛、功能活动和自我感受评分显著高于对照组(P0.05)。结论:基于3D打印技术的计算机辅助设计修复先天性手部畸形成功率高,能减少患者并发症的发生,提高患者的手部旋转功能优良率与手部综合功能。     

腹腔镜肾癌根治术治疗肾癌的疗效观察

目的:观察腹腔镜肾癌根治术治疗肾癌的疗效。方法:选取2013年12月~2015年12月于我院诊治的肾细胞癌并行肾癌根治术患者70例,其中42例患者行腹腔镜肾癌根治术,纳入微创组;28例患者行开放性肾癌根治术,纳入对照组。比较两组患者围手术期情况、术后第3天炎症指标与肾功能、围术期并发症。结果:与对照组相比,微创组患者手术时间、住院时间、手术切口较短,术后下床走动时间、术后停止禁食时间较早,手术出血量、手术费用较少(P0.001)。与对照组相比,微创组患者WBC、CRP水平较低(P0.001)。微创组患者围术期总并发症发生率为4.8%,低于对照组(21.5%),差异有统计学意义(x~2=4.610,P=0.032)。结论:腹腔镜肾癌根治术治疗肾癌较开放性肾癌根治术有疗效佳、安全性好、术后恢复快及并发症少的优势,值得临床推广。     

The Impact of Spinal Cord Nerve Roots and Denticulate Ligaments on Cerebrospinal Fluid Dynamics in the Cervical Spine

Cerebrospinal fluid (CSF) dynamics in the spinal subarachnoid space (SSS) have been thought to play an important pathophysiological role in syringomyelia, Chiari I malformation (CM), and a role in intrathecal drug delivery. Yet, the impact that fine anatomical structures, including nerve roots and denticulate ligaments (NRDL), have on SSS CSF dynamics is not clear. In the present study we assessed the impact of NRDL on CSF dynamics in the cervical SSS. The 3D geometry of the cervical SSS was reconstructed based on manual segmentation of MRI images of a healthy volunteer and a patient with CM. Idealized NRDL were designed and added to each of the geometries based on in vivo measurments in the literature and confirmation by a neuroanatomist. CFD simulations were performed for the healthy and patient case with and without NRDL included. Our results showed that the NRDL had an important impact on CSF dynamics in terms of velocity field and flow patterns. However, pressure distribution was not altered greatly although the NRDL cases required a larger pressure gradient to maintain the same flow. Also, the NRDL did not alter CSF dynamics to a great degree in the SSS from the foramen magnum to the C1 level for the healthy subject and CM patient with mild tonsillar herniation (∼6 mm). Overall, the NRDL increased fluid mixing phenomena and resulted in a more complex flow field. Comparison of the streamlines of CSF flow revealed that the presence of NRDL lead to the formation of vortical structures and remarkably increased the local mixing of the CSF throughout the SSS.     

Adjuvant gamma knife surgery and image-guided,intensity-modulated radiation therapy for the treatment of sacral chordomas

AimThe aim of this study was to confirm whether patients with sacral chordoma benefit from adjuvant radiotherapy and to determine the optimal photon radiotherapy module for comprehensive treatment.BackgroundChordoma is a rare slow-growing neoplasm arisen from cellular remnants of the notochord. About 50% occur in the sacrococcygeal region. Surgical resection and adjuvant radiation therapy are recommended treatment due to the improving local control rate.Materials and methods118 patients treated by surgery and adjuvant radiotherapy from August 2003 to May 2015 were retrospectively analyzed. All patients received surgical resection after diagnosis. Among these patients, 44 were treated by exclusive surgery, and 48 were treated with adjuvant image-guided, intensity-modulated radiation therapy (IG-IMRT). In addition, 26 patients were treated with gamma knife surgery (GKS) after surgical resection. The median follow-up was 54 months for all patients. Kaplan–Meier analysis was used to calculate recurrence-free survival (RFS) overall survival (OS).ResultsPatients treated with adjuvant radiotherapy had better RFS (p = 0.014) than those treated exclusively by surgery. The patients in the IG-IMRT group exhibited better recurrence-free survival (p = 0.01) than the GKS group. Moreover, in the IG-IMRT group, patients treated by higher dose were associated with better RFS (p = 0.04). No significant difference in OS was found. No grade 3 late toxicity was found.ConclusionsWe confirmed that adjuvant radiotherapy improved RFS but not OS in sacral chordoma patients after surgery. Furthermore, favorable RFS and low adverse event rates were observed following IG-IMRT. Our results suggest that high dose IG-IMRT is an appropriate module of adjuvant radiotherapy for sacral chordoma patients.