دسترسی یکساله به بیش از ۵۰۰ ژورنال روز جهان موجود در سامانه
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Freehand screw insertion technique without image guidance for the cortical bone trajectory screw in posterior lumbar interbody fusion: what affects screw misplacement?
Masayoshi Ishii MD1, Atsunori Ohnishi MD1, Akira Yamagishi MD1, and Tetsuo Ohwada MD1
doi : 10.3171/2021.2.SPINE202145
Volume 36, Issue 1, Page Range: 1–7
Cortical bone trajectory (CBT) screw insertion using a freehand technique is considered less feasible than guided techniques, due to the lack of readily identifiable visual landmarks. However, in posterior lumbar interbody fusion (PLIF), after resection of the posterior anatomy, the pedicles themselves, into which implantation is performed, are palpable from the spinal canal and neural foramen. With the help of pedicle wall probing, the authors have placed CBT screws using a freehand technique without image guidance in PLIF. This technique has advantages of no radiation exposure and no requirement for expensive devices, but the disadvantage of reduced accuracy in screw placement. To address the problem of symptomatic breaches with this freehand technique, variables related to unacceptable screw positioning and need for revisions were investigated.
Improvements in lower-extremity patient-reported outcomes after lumbar interbody fusion
Yong-Chan Kim MD, PhD1, Keun-Ho Lee MD, PhD2, Gab-Lae Kim MD, PhD2, Ki-Tack Kim MD, PhD1, Kee-Yong Ha MD, PhD1, Seung Nam Ko MD1, Qiang Luo MD1, Tae Won Eom MD2, and Hyun Gon Gwak MD1
doi : 10.3171/2021.2.SPINE201494
Volume 36, Issue 1, Page Range: 8–15
Recently, new patient-reported outcome measures (PROMs) of the spine were designed to overcome the limitations of previous spinal PROMs and to consider the whole spine as a single kinetic functional unit. Owing to the significance of spine-hip-knee and global body balance, the spine and lower extremities cannot be considered separately. However, no reports have evaluated lower-extremity functional outcome using PROMs after lumbar spine surgery. The authors aimed to elucidate changes in hip and knee PROMs after lumbar interbody fusion and to evaluate the sagittal spinopelvic radiographic parameters that were most strongly correlated with lower-extremity PROMs.
Transforaminal 360° lumbar endoscopic foraminotomy in postfusion patients: technical note and case series
Albert E. Telfeian MD, PhD1, Ashwin Veeramani2, Andrew S Zhang MD3, Matthew S. Quinn MD3, and Alan H. Daniels MD3
doi : 10.3171/2021.3.SPINE21206
Volume 36, Issue 1, Page Range: 16–22
This report describes a minimally invasive lumbar foraminotomy technique that can be applied in patients who underwent complex spine decompression procedures or in patients with severe foraminal stenosis.
Femoral head to lower lumbar neural foramen distance as a novel radiographic parameter to predict postoperative stretch neuropraxia
Alex S. Ha MD1, Meghan Cerpa MPH1, Justin Mathew MD1, Paul Park MD1, Joseph M. Lombardi MD1, Andrew J. Luzzi MD1, Nathan J. Lee MD1, Marc D. Dyrszka MD1, Zeeshan M. Sardar MD1, Ronald A. Lehman Jr. MD1, and Lawrence G. Lenke MD1
doi : 10.3171/2021.1.SPINE201989
Volume 36, Issue 1, Page Range: 23–31
Lumbosacral fractional curves in adult spinal deformity (ASD) patients often have sharp coronal curves resulting in significant pain and imbalance. Postoperative stretch neuropraxia after fractional curve correction can lead to discomfort and unsatisfactory outcomes. The goal of this study was to use radiographic measures to increase understanding of the relationship between postoperative stretch neuropraxia and fractional curve correction.
Preoperative prediction of postoperative urinary retention in lumbar surgery: a comparison of regression to multilayer neural network
Ken Porche MD, MA1, Carolina B. Maciel MD, MSCR2, Brandon Lucke-Wold MD, PhD1, Steven A. Robicsek MD, PhD3, Nohra Chalouhi MD1, Meghan Brennan MD, MS3, and Katharina M. Busl MD, MS2
doi : 10.3171/2021.3.SPINE21189
Volume 36, Issue 1, Page Range: 32–41
Postoperative urinary retention (POUR) is a common complication after spine surgery and is associated with prolongation of hospital stay, increased hospital cost, increased rate of urinary tract infection, bladder overdistention, and autonomic dysregulation. POUR incidence following spine surgery ranges between 5.6% and 38%; no reliable prediction tool to identify those at higher risk is available, and that constitutes an important gap in the literature. The objective of this study was to develop and validate a preoperative risk model to predict the occurrence of POUR following routine elective spine surgery.
Biomechanics of a laterally placed sacroiliac joint fusion device supplemental to S2 alar-iliac fixation in a long-segment adult spinal deformity construct: a cadaveric study of stability and strain distribution
Bernardo de Andrada Pereira MD1, Piyanat Wangsawatwong MD1, Jennifer N. Lehrman MS1, Anna G. U. Sawa MS1, Derek P. Lindsey MS2, Scott A. Yerby PhD2, Jakub Godzik MD3, Alexis M. Waguespack MD4, Juan S. Uribe MD3, and Brian P. Kelly PhD1
doi : 10.3171/2021.3.SPINE202175
Volume 36, Issue 1, Page Range: 42–52
S2 alar-iliac (S2AI) screw fixation effectively enhances stability in long-segment constructs. Although S2AI fixation provides a single transarticular sacroiliac joint fixation (SIJF) point, additional fixation points may provide greater stability and attenuate screw and rod strain. The objectives of this study were to evaluate changes in stability and pedicle screw and rod strain with extended distal S2AI fixation and with supplemental bilateral integration of two sacroiliac joint fusion devices implanted using a traditional minimally invasive surgical approach.
Acute failure of S2-alar-iliac screw pelvic fixation in adult spinal deformity: novel failure mechanism, case series, and review of the literature
Christopher T. Martin MD1, David W. Polly Jr. MD1,2, Kenneth J. Holton MD1, Jose E. San Miguel-Ruiz MD, PhD1, Melissa Albersheim MD1, Paul Lender BS1, Jonathan N. Sembrano MD1, Matthew A. Hunt MD2, and Kristen E. Jones MD1,2
doi : 10.3171/2021.2.SPINE201921
Volume 36, Issue 1, Page Range: 53–61
Pelvic fixation with S2-alar-iliac (S2AI) screws is an established technique in adult deformity surgery. The authors’ objective was to report the incidence and risk factors for an underreported acute failure mechanism of S2AI screws.
Impact of an intraoperative coronal spinal alignment measurement technique using a navigational tool for a 3D spinal rod bending system in adult spinal deformity cases
Masanari Takami MD, PhD1, Ryo Taiji MD1, Shunji Tsutsui MD, PhD1, Hiroshi Iwasaki MD, PhD1, Motohiro Okada MD, PhD1, Akihito Minamide MD, PhD1, Yasutsugu Yukawa MD, PhD1, Hiroshi Hashizume MD, PhD1, and Hiroshi Yamada MD, PhD1
doi : 10.3171/2021.3.SPINE201856
Volume 36, Issue 1, Page Range: 62–70
In corrective spinal surgery for adult spinal deformity (ASD), the focus has been on achieving optimal spinopelvic alignment. However, the correction of coronal spinal alignment is equally important. The conventional intraoperative measurement methods currently used for coronal alignment are not ideal. Here, the authors have developed a new intraoperative coronal alignment measurement technique using a navigational tool for a 3D spinal rod bending system (CAMNBS). The purpose of this study was to test the feasibility of using the CAMNBS for coronal spinal alignment and to evaluate its usefulness in corrective spinal surgery for ASD.
The impact of preoperative supine radiographs on surgical strategy in adult spinal deformity
Francis Lovecchio MD1, Jonathan Charles Elysee BS1, Renaud Lafage MS1, Jeff Varghese MD1, Mathieu Bannwarth BS1, Frank Schwab MD1, Virginie Lafage PhD1, and Han Jo Kim MD1
doi : 10.3171/2021.3.SPINE201739
Volume 36, Issue 1, Page Range: 71–77
Preoperative planning for adult spinal deformity (ASD) surgery is essential to prepare the surgical team and consistently obtain postoperative alignment goals. Positional imaging may allow the surgeon to evaluate spinal flexibility and anticipate the need for more invasive techniques. The purpose of this study was to determine whether spine flexibility, defined by the change in alignment between supine and standing imaging, is associated with the need for an osteotomy in ASD surgery.
Intraoperative halo-femoral traction during posterior spinal arthrodesis for adolescent idiopathic scoliosis curves between 70° and 100°: a randomized controlled trial
Miao Hu MD1, Aining Lai MSc3, Zheng Zhang MD1, Jingjing Chen MSc2, Tao Lin MD1, Jun Ma MD1, Ce Wang MD1, Yichen Meng MD1, and Xuhui Zhou MD1
doi : 10.3171/2021.2.SPINE21184
Volume 36, Issue 1, Page Range: 78–85
Surgical management of scoliosis curves between 70° and 100° remains controversial. The authors designed this randomized controlled trial to validate the efficacy of intraoperative halo-femoral traction (IOHFT) in patients with adolescent idiopathic scoliosis (AIS), Cobb angles between 70° and 100°, and flexibility < 35%.
Bilateral open sacroiliac joint fusion during adult spinal deformity surgery using triangular titanium implants: technique description and presentation of 21 cases
Christopher T. Martin MD1, Kenneth J. Holton MD1, Kristen E. Jones MD1,2, Jonathan N. Sembrano MD1, and David W. Polly Jr. MD1,2
doi : 10.3171/2021.3.SPINE202218
Volume 36, Issue 1, Page Range: 86–92
Pelvic fixation enhances long constructs during deformity surgery. Subsequent loosening of iliac screws and pain at the pelvis occur in as many as 29% of patients. Concomitant sacroiliac (SI) fusion may prevent potential pain and failure. The objective of this study was to describe a novel surgical technique and a single institution’s experience using bilateral SI fusion during adult deformity surgery with S2-alar-iliac (S2AI) screws and triangular titanium rods (TTRs) placed with navigation.
Association of findings on preoperative extension lateral cervical radiography with osteotomy type, approach, and postoperative cervical alignment after cervical deformity surgery
Hai V. Le MD1, Joseph B. Wick MD1, Renaud Lafage MS2, Gregory M. Mundis Jr. MD3, Robert K. Eastlack MD3, Shay Bess MD4, Douglas C. Burton MD5, Christopher P. Ames MD6, Justin S. Smith MD, PhD7, Peter G. Passias MD8, Munish C. Gupta MD9, Virginie Lafage PhD2, Eric O. Klineberg MD1, and the International Spine Study Group
doi : 10.3171/2021.3.SPINE202156
Volume 36, Issue 1, Page Range: 99–112
The authors’ objective was to determine whether preoperative lateral extension cervical spine radiography can be used to predict osteotomy type and postoperative alignment parameters after cervical spine deformity surgery.
Variations in management of A3 and A4 cervical spine fractures as designated by the AO Spine Subaxial Injury Classification System
Barry Ting Sheen Kweh MBBS (Hons)1,2,3, Jin Wee Tee BMedSci, MBBS, MD, FRACS1,2,4, Sander Muijs MD, PhD5, F. Cumhur Oner MD, PhD5, Klaus John Schnake MD6, Lorin Michael Benneker MD, PhD7, Emiliano Neves Vialle MD, MSc8, Frank Kanziora MD, PhD9, Shanmuganathan Rajasekaran MCh, PhD, FRCS10, Gregory Schroeder MD11, Alexander R. Vaccaro MD, PhD11, and the AO Spine Subaxial Injury Classification System Validation Group, AndreyGrinMD Ahmed ShawkyAbdelgawaadMD Akbar JaleelZubairiFCOS Ortho AlejandroCastilloMD Alejo VernengoLezicaMD AlessandroRamieriMD, PhD AlfredoGuiroyMD AlonGrundshteinMD AmauriGodinhoJr.MD AminHenineMD Andrei A.PershinMD, PhD AlkinoosAthanasiouMD, PhD BaronZarate-KalfopulosMD SofienBenzartiMD ClaudioBernucciMD Brandon J.RebholzMD, FAAOS, BrunoDireito-SantosMS, MSc, FEBOT, Bruno LourençoCostaMD, MSc, BrunoSacilotoMD, CatalinMajerMD, PhD, ChadiTannouryMD, FAOA, FAAOS, ChristinaChengMD, Jason Pui YinCheungMD, ChristianKonradsMD, ChumponJetjumnongMD, Chun KeeChungMD, PhD, Eugen CezarPopescuMD, PhD, CumhurKilinçerMD, PhD, Colin B.HarrismMD, FAAOS, Craig D.SteinerMD, CristinaIgualadaMD, DarkoPerovicMD, PhD, David RuizPicazoMD, Luis DavidOrosco FalconeMD, DilipGopalakrishnanMS, DesaiAnkitMBBS, D.Ortho, DNB (Ortho), Devi PrakashTokalaFRCS (T&O), BalgopalKarmacharyaFCPS, RaphaelLotanMD, MHA, MahmoudShoaibMSc, SalvatoreRussoFRCS (NS), Arun KumariswanadhaMS, FACS, BhavukGargMS (Ortho), Noe DimasUribeCMOT, FabricioMedinaMD, JayakumarSubbiahDNB (Ortho), WaelAlsammakMD, ValentineMandizvidzaFCS-ECSA (Ortho), Ahmad ArieffAtanMD, RathinaveluBaraniMS (Ortho), MRCS (Ed), Hugo VilchisSámanoMD, Emilija StojkovskaPemovskaMD, Fabian CatarinoLopez HinojosaMD, TaolinFangMD, PhD, FedericoLandrielMD, Federico DanielSartorPhD, Marcus ViniciusDe Oliveira FerreiraMD, VitoFiorenzaMD, Francisco AlbertoMannaraMD, SeibertFranzProf. Dr. Mag., Brett A.FreedmanMD, Samuel Arsenio M.GrozmanMD, FPOA, FPCS, GuillermoEspinosaMD, Guillermo AlejandroRicciardiMD, GunaseelanPonnusamyMS (Ortho) UKM, Hassane AliAmadouMD, ItatiRomeroMD, JoostRutgesMD, PhD, JamesHarropMD, MSHQS, Jose-CarlosSauri-BarrazaMD, Jeevan KumarSharmaMBBS, MS (Ortho), FASSI, Jose Joefrey F.ArbatinJr.FPOA, Jeronimo B.MilanoMD, PhD, Jibin JosephFrancis(SA) FRCS (SN), John ChenLi TatMB BCh (NUI), BAO, LRCSI, FRCS (Ed), JoachimVahlMD, Jose AlfredoCorredorMD, João MorenoMoraisMD, JoanaGuasqueMD, JohnKoernerMD, DuerinckJohnnyMD, PhD, Jose RafaelPerozo RonMD, JuanDelgado-FernandezMD, Juan EstebanMuñoz Montoya JuanLouridoMD, ArielKaenPhD, Kubilay MuratÖzdenerMD, KonstantinosMargetisMD, PhD, KonstantinosPaterakisMD, Lady LozanoCariMD, LingjieFuMD, PhD, AhmedDawoudMD, Luis MuñizLunaMD, MahmoudAlkharsawiPhD, Maximo-AlbertoDiez-UlloaMD, Maria A.García-PalleroMD, MauroPluderiMD, PhD, MarceloGruenbergMD, MarceloValaccoMD, MarioGanauMD, PhD, MBA, FEBNS, Martin M.EstefanMD, Luis MiguelDuchén RodríguezMD, NaohisaMiyakoshiMD, PhD, MahmoudElshamlyMD, PhD, Mohamed FawzyKhattabMD, PhD, Sean R.SmithMD, MbarakAbeidMD, IgnacioGarfinkelMD, NicolaNicassioMD, NunoNevesPhD, Olga CarolinaMorillo AcostaMD, Pedro LuisBazánMD, PauloPereiraMD, PhD, PhedyLimMD, Patrick R.PritchardMD, PragneshBhattMS, MCh, FRCS, FEBNS, RaghurajKundangarMS (Ortho), Rian SouzaVieiraMD, RicardoRodrigues-PintoMD, PhD, Ripul R.PanchalDO, FACOS, FACS, RafaelLlombart-BlancoMD, PhD, Ronald AlbertoRioja RosasMD, RuiManilhaMD, RatkoYuracMD, SaraDinizMD, Scott C.WagnerMD, SegundoFuegoMD, SelvarajRamakrishnanMD, SerdarDemirözMD, ShafiqHacklaMBBS, MS (Ortho), DNB (Ortho), BabakShariatiFRCS, MohammadEl-SharkawiMD, PhD, YasunoriSorimachiMD, DMSc, PhD, StipeCorlukaMD, Sung-JooYuhMD, ThamiBenzakourMD, TarekElHewalaMD, PhD, TarunSuriMS, FNB (Spine surgery), Derek T.CawleyMMSc, MCh, FRCS, AdetunjiToluseMD, FWACS, FMCOrtho, CristianValdezMD, WaheedAbdulMD, WaqarHassanMD, YohanRobinsonMD, PhD, MBA, Zachary L.HickmanMD, FAANS, Mohamad Zaki HajiMohd AminMS Ortho, Oscar GonzálezGuerraMD, ZdenekKlezlMD, PhD,
doi : 10.3171/2021.3.SPINE201997
Volume 36, Issue 1, Page Range: 93–98
Optimal management of A3 and A4 cervical spine fractures, as defined by the AO Spine Subaxial Injury Classification System, remains controversial. The objectives of this study were to determine whether significant management variations exist with respect to 1) fracture location across the upper, middle, and lower subaxial cervical spine and 2) geographic region, experience, or specialty.
Improved estimates of strength and stiffness in pathologic vertebrae with bone metastases using CT-derived bone density compared with radiographic bone lesion quality classification
Ron N. Alkalay PhD1, Michael W. Groff MD5, Marc A. Stadelmann PhD6, Florian M. Buck MD7, Sven Hoppe MD8, Nicolas Theumann MD9, Umesh Mektar MD2, Roger B. Davis ScD3, and David B. Hackney MD4
doi : 10.3171/2021.2.SPINE202027
Volume 36, Issue 1, Page Range: 113–124
The aim of this study was to compare the ability of 1) CT-derived bone lesion quality (classification of vertebral bone metastases [BM]) and 2) computed CT-measured volumetric bone mineral density (vBMD) for evaluating the strength and stiffness of cadaver vertebrae from donors with metastatic spinal disease.
Spine-specific skeletal related events and mortality in non–small cell lung cancer patients: a single-institution analysis
Owoicho Adogwa MD, MPH1, Daniel R. Rubio MD1, Jacob M. Buchowski MD, MS1, Alden D’Souza BS1, Maksim A. Shlykov MD, MS1, and Jack W. Jennings MD, PhD2
doi : 10.3171/2020.7.SPINE20829
Volume 36, Issue 1, Page Range: 125–132
The population prevalence of non–small cell lung cancer (NSCLC) continues to increase; however, data are limited regarding the incidence rate of skeletal related events (SREs) (i.e., surgery to the spinal column, radiation to the spinal column, radiofrequency ablation, kyphoplasty/vertebroplasty, spinal cord compression, or pathological vertebral body fractures) and their impact on overall mortality. In this study, the authors sought to estimate the incidence rates of SREs in NSCLC patients and to quantify their impact on overall mortality.
Editorial. Improvements to the manufacturing process for generation of Schwann cells: from laboratory to clinical translation
Mayank Kaushal MD, MBA1 and Shekar N. Kurpad MD, PhD1
doi : 10.3171/2021.1.SPINE202065
Volume 36, Issue 1, Page Range: 133
Scalable culture techniques to generate large numbers of purified human Schwann cells for clinical trials in human spinal cord and peripheral nerve injuries
Aisha Khan MSc, MBA1,3, Anthony Diaz MS1,2, Adriana E. Brooks MS1,3, S. Shelby Burks MD1,2, Gagani Athauda MD7, Patrick Wood PhD1,2, Yee-Shuan Lee PhD3, Risset Silvera BS1,3, Maxwell Donaldson BA1,3, Yelena Pressman MS1, Kim D. Anderson PhD8, Mary Bartlett Bunge PhD1,2,4, Damien D. Pearse PhD1,2,3,6, W. Dalton Dietrich PhD1,2,4,5, James D. Guest MD, PhD1,2, and Allan D. Levi MD, PhD1,2
doi : 10.3171/2020.11.SPINE201433
Volume 36, Issue 1, Page Range: 135–144
Schwann cells (SCs) have been shown to play an essential role in axon regeneration in both peripheral nerve injuries (PNIs) and spinal cord injuries (SCIs). The transplantation of SCs as an adjunctive therapy is currently under investigation in human clinical trials due to their regenerative capacity. Therefore, a reliable method for procuring large quantities of SCs from peripheral nerves is necessary. This paper presents a well-developed, validated, and optimized manufacturing protocol for clinical-grade SCs that are compliant with Current Good Manufacturing Practices (CGMPs).
Acute, severe traumatic spinal cord injury: improving urinary bladder function by optimizing spinal cord perfusion
Florence R. A. Hogg MRCS1, Siobhan Kearney RN1, Eskinder Solomon PhD2, Mathew J. Gallagher PhD, MRCS1, Argyro Zoumprouli MD, PhD3, Marios C. Papadopoulos MD1, and Samira Saadoun PhD1
doi : 10.3171/2021.3.SPINE202056
Volume 36, Issue 1, Page Range: 145–152
The authors sought to investigate the effect of acute, severe traumatic spinal cord injury on the urinary bladder and the hypothesis that increasing the spinal cord perfusion pressure improves bladder function.
Association of venous thromboembolism following pediatric traumatic spinal injuries with injury severity and longer hospital stays
Blake M. Hauser BSPH, MPhil1, Samantha E. Hoffman BS1, Saksham Gupta MD1, Mark M. Zaki MD, MBA1, Edward Xu BA1, Melissa Chua MD1, Joshua D. Bernstock MD, PhD1, Ayaz Khawaja MD1,2, Timothy R. Smith MD, PhD, MPH1, Mark R. Proctor MD1, and Hasan A. Zaidi MD1
doi : 10.3171/2021.3.SPINE201981
Volume 36, Issue 1, Page Range: 153–159
Venous thromboembolism (VTE) can cause significant morbidity and mortality in hospitalized patients, and may disproportionately occur in patients with limited mobility following spinal trauma. The authors aimed to characterize the epidemiology and clinical predictors of VTE in pediatric patients following traumatic spinal injuries (TSIs).
Double tubular minimally invasive spine surgery: a novel technique expands the surgical visual field during resection of intradural pathologies
Ulrich Hubbe MD1,2, Jan-Helge Klingler MD1, Roland Roelz MD1, Christoph Scholz MD1, Katerina Argiti MD1,2, Panagiotis Fistouris MD1, Jürgen Beck MD1,2, and Ioannis Vasilikos MD1,2
doi : 10.3171/2021.3.SPINE2164
Volume 36, Issue 1, Page Range: 160–163
A major challenge of a minimally invasive spinal approach (MIS) is maintaining freedom of maneuverability through small operative corridors. Unfortunately, during tubular resection of intradural pathologies, the durotomy and its accompanying tenting sutures offer a smaller operating window than the maximum surface of the tube’s base. The objective of this study was to evaluate if a novel double tubular technique could expand the surgical visual field during MIS resection of intradural pathologies.
