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Validation of a surgical invasiveness index in patients with lumbar spinal disorders registered in the Spine Tango registry
Erik M. HolzerEmin AghayevAnne F. Mannion
doi : 10.1007/s00586-020-06651-w
Volume 30, issue 1, January 2021, Pages: 1 - 12
Being able to quantify the invasiveness of a surgical procedure is important to weigh up its associated risks, since invasiveness governs the blood loss, operative time and likelihood of complications. Mirza et al. (Spine (Phila Pa 1976) 33:2651–2661, 2008) published an invasiveness index for spinal surgery. We evaluated the validity of a modified version of the Mirza invasiveness index (mMII), adapted for use with registry data.
The effect of obesity, diabetes, and epidural steroid injection on regional volumetric bone mineral density measured by quantitative computed tomography in the lumbosacral spine
Ichiro OkanoStephan N. SalzmannAlexander P. Hughes
doi : 10.1007/s00586-020-06610-5
Volume 30, issue 1, January 2021, Pages: 13 - 21
High body mass index (BMI) is positively correlated with bone mineral density (BMD) in healthy adults; however, the effect of BMI on regional segmental BMDs in the axial skeleton is unclear. In addition, obese patients often have glucose intolerance and patients with lumbar spine pathology commonly have a history of epidural steroid injections (ESIs). The purpose of this study is to evaluate the effect of these patient factors on regional differences in BMD measured by quantitative computed tomography (QCT) in a lumbar fusion patient cohort.
Lumbar interbody fusion: recent advances in surgical techniques and bone healing strategies
Bin MengJoshua BunchJinxi Wang
doi : 10.1007/s00586-020-06596-0
Volume 30, issue 1, January 2021, Pages: 22 - 33
Lumbar interbody fusion (LIF) is a treatment option for low back pain secondary to lumbar instability and/or deformity. This review highlights recent studies of surgical techniques and bone healing strategies for LIF.
Cross-links in posterior pedicle screw-rod instrumentation of the spine: a systematic review on mechanical, biomechanical, numerical and clinical studies
Frédéric CornazJonas WidmerMazda Farshad
doi : 10.1007/s00586-020-06597-z
Volume 30, issue 1, January 2021, Pages: 34 - 49
Dorsal screw-rod instrumentations are used for a variety of spinal disorders. Cross-links (CL) can be added to such constructs, however, no clear recommendations exist. This study aims to provide an overview of the available evidence on the effectiveness of CL, potentially allowing to formulate recommendations on their use.
ALIF in the correction of spinal sagittal misalignment. A systematic review of literature
M. FormicaE. QuartoL. Felli
doi : 10.1007/s00586-020-06598-y
Volume 30, issue 1, January 2021, Pages: 50 - 62
We aim at analysing the impact of anterior lumbar interbody fusion (ALIF) in restoring the main spinopelvic parameters, along with its potentials and limitations in correcting sagittal imbalance.
Comparable dislocation and revision rates for patients undergoing total hip arthroplasty with subsequent or prior lumbar spinal fusion: a meta-analysis and systematic review
James Randolph OnggoMithun NambiarRaphael Hau
doi : 10.1007/s00586-020-06635-w
Volume 30, issue 1, January 2021, Pages: 63 - 70
There is a known correlation between the procedures of lumbar spinal fusion (LSF), total hip arthroplasty (THA) and the complication of hip dislocation and revision occurring in patients. However there is no consensus as to whether the risk of this complication is higher if THA is performed before or after LSF. This meta-analysis aims to determine the influence of surgical sequence of lumbar spinal fusion and total hip arthroplasty on the rates of hip dislocation and revisions.
Novel augmentation technique of percutaneous pedicle screw fixation using hydroxyapatite granules in the osteoporotic lumbar spine: a cadaveric biomechanical analysis
Haruo KannoToshimi AizawaEiji Itoi
doi : 10.1007/s00586-020-06451-2
Volume 30, issue 1, January 2021, Pages: 71 - 78
Percutaneous pedicle screw (PPS) fixation has been commonly used for various spine surgeries. Rigid PPS fixation is necessary to decrease the incidence of screw loosening in osteoporotic spine. Recently, we have reported biomechanical advantages of augmentation technique using hydroxyapatite (HA) granules for PPS fixation in synthetic bone. However, its biomechanical performance in augmenting PPS fixation for osteoporotic spine has not been fully elucidated. The aim of the present study is to perform a cadaveric biomechanical analysis of PPS fixation augmented with HA granules.
Importance of the epiphyseal ring in OLIF stand-alone surgery: a biomechanical study on cadaveric spines
Xuyang ZhangHao WuFengdong Zhao
doi : 10.1007/s00586-020-06667-2
Volume 30, issue 1, January 2021, Pages: 79 - 87
To explore the function of endplate epiphyseal ring in OLIF stand-alone surgery using a biomechanical model to reduce the complications of endplate collapse and cage subsidence.
Cranial facet joint injuries in percutaneous lumbar pedicle screw placement: a matched-pair analysis comparing intraoperative 3D navigation and conventional fluoroscopy
Marc HohenhausRalf WatzlawickJan-Helge Klingler
doi : 10.1007/s00586-020-06467-8
Volume 30, issue 1, January 2021, Pages: 88 - 96
The violation of the cranial adjacent facet is a frequent complication in lumbar instrumentations and can induce local pain and adjacent segment disease. Minimally invasive screw implantation is often stated as risk factor in comparison with open approaches. Percutaneous pedicle screw placement (PPSP) can be performed using single X-ray images (fluoroscopy) or intraoperative 3D navigation. The study compares top-level screws in percutaneous lumbar instrumentations regarding facet violations and screw pedicle position using navigation or fluoroscopy.
Correlation study of radiographic characteristics and operative difficulty in lateral–anterior lumbar interbody fusion (LaLIF) at the L4-5 level: a novel classification for case selection
Hui LiuHaowen CuiZhaomin Zheng
doi : 10.1007/s00586-020-06570-w
Volume 30, issue 1, January 2021, Pages: 97 - 107
To analyze correlations between the realistic surgical difficulty of LaLIF and anatomic characteristics in radiographic images, in order to develop a simple classification to provide guiding information for case selection and evaluate the potential risks of the technique.
The prone transpsoas technique: preliminary radiographic results of a multicenter experience
Luiz PimentaRodrigo AmaralMatheus Batista
doi : 10.1007/s00586-020-06471-y
Volume 30, issue 1, January 2021, Pages: 108 - 113
The lateral lumbar interbody fusion (LLIF) is a safe and effective technique to treat a vast range of lumbar disorders. However, the technique is also burdened by some problems. A new approach to the lateral lumbar interbody fusion was devised to solve or reduce some of the problems regarding the lateral approach. Its principal difference from the standard LLIF relies on positioning the patient in a prone decubitus, which might lead to an increase in the intradiscal lordosis.
PLIF surgery with titanium-coated PEEK or uncoated PEEK cages: a prospective randomised clinical and radiological study
Klaus John SchnakeNikolai FleiterFrank Kandziora
doi : 10.1007/s00586-020-06642-x
Volume 30, issue 1, January 2021, Pages: 114 - 121
This study aimed to compare clinical results and fusion rates of uncoated polyetheretherketone (PEEK) cages with titanium-coated PEEK cages in posterior lumbar interbody fusion (PLIF) surgery.
Does minimally invasive spine surgery reduce the rate of perioperative medical complications? A retrospective single-center experience of 1435 degenerative lumbar spine surgeries
Marcelle AltshulerKyle MuellerJean-Marc Voyadzis
doi : 10.1007/s00586-020-06536-y
Volume 30, issue 1, January 2021, Pages: 122 - 127
It is unclear if minimally invasive techniques reduce the rate of perioperative complications when compared to traditional open approaches to the lumbar spine. Our aim was to evaluate perioperative complications in patients that underwent MIS and conventional open techniques for degenerative lumbar pathology.
Cortical threaded pedicle screw improves fatigue strength in decreased bone quality
Lukas WeiserKay SellenschlohGerd Huber
doi : 10.1007/s00586-020-06593-3
Volume 30, issue 1, January 2021, Pages: 128 - 135
Inadequate anchoring of pedicle screws in vertebrae with poor bone quality is a major problem in spine surgery. The aim was to evaluate whether a modified thread in the area of the pedicle could significantly improve the pedicle screw fatigue strength.
A screw position change at an early postoperative stage preceding the subsequent occurrence of screw loosening
Satoru TaniokaMasashi FujimotoMasaki Mizuno
doi : 10.1007/s00586-020-06510-8
Volume 30, issue 1, January 2021, Pages: 136 - 141
The authors recently proposed the novel radiologic assessment method to measure chronological screw position changes precisely. The aim of this study was to predict the late occurrence of screw loosening, which was diagnosed by the radiographic lucent zone, by evaluating screw position changes at an early postoperative stage using the novel method.
Radiological and clinical differences between robotic-assisted pedicle screw fixation with and without real-time optical tracking
Jinpeng DuLin GaoLiang Yan
doi : 10.1007/s00586-020-06641-y
Volume 30, issue 1, January 2021, Pages: 142 - 150
To study radiological and clinical differences between robotic-assisted pedicle screw fixation with and without real-time optical tracking.
The correlation of intraoperative distraction of intervertebral disc with the postoperative canal and foramen expansion following oblique lumbar interbody fusion
Guang-Xun LinGang RuiJin-Sung Kim
doi : 10.1007/s00586-020-06604-3
Volume 30, issue 1, January 2021, Pages: 151 - 163
To examine the correlation of intraoperative distraction of intervertebral disc with the postoperative central canal and foramen expansion by oblique lumbar interbody fusion (OLIF) with indirect decompression.
Defining a safe working zone for lateral lumbar interbody fusion: a radiographic, cross-sectional study
Bhavuk GargNishank MehtaAnupam Gupta
doi : 10.1007/s00586-020-06624-z
Volume 30, issue 1, January 2021, Pages: 164 - 172
To present a radiographic analysis of the anatomy of the lumbar plexus and retroperitoneal blood vessels with respect to psoas morphology and safe working zones (SWZ) for LLIF.
MRI versus CT: a retrospective investigation of the feasibility and agreeability in post-operative evaluation of screw position after posterior lumbar interbody fusion
F. M. BattledayM. WilliamsJ. Timothy
doi : 10.1007/s00586-020-06433-4
Volume 30, issue 1, January 2021, Pages: 173 - 180
Many patients receive magnetic resonance (MR) and computed tomography (CT) scans post-operatively to review screw placement. Traditionally, CT is diagnostic but as metal artefact reduction sequences are advancing in MR, the necessity for both MR and CT scans is questionable. The objective is to establish the statistical agreeability of MR and CT for evaluation of adequate screw placement in posterior lumbar interbody fusion.
Risk of adjacent segment disease after ‘topping-off’ multi-level lumbar fusions with posterior dynamic stabilisers: an observational cohort study
William R. SearsAnn C. SolterbeckJennifer A. Kos
doi : 10.1007/s00586-020-06628-9
Volume 30, issue 1, January 2021, Pages: 181 - 190
To determine whether ‘topping-off’ lumbar fusions, using posterior dynamic stabilising devices (PDSs) with specific biomechanical parameters, reduces the risk of adjacent segment disease (ASD).
Factors associated with a 30-day unplanned readmission after elective spine surgery: a retrospective cohort study
Tak Kyu OhJung-Hee RyuYoung-Tae Jeon
doi : 10.1007/s00586-020-06541-1
Volume 30, issue 1, January 2021, Pages: 191 - 199
The aim of this study was to identify factors that are independently associated with the 30-day unplanned readmission rate of patients who underwent elective spine surgery.
Qualitative assessment of patients’ perspectives and willingness to improve healthy lifestyle physical activity after lumbar surgery
Carol A. MancusoManuela C. RigaudFederico P. Girardi
doi : 10.1007/s00586-020-06508-2
Volume 30, issue 1, January 2021, Pages: 200 - 207
Many patients retain sedentary lifestyles after lumbar surgery and incur increased risks of adverse health outcomes. The goal of this study was to assess patients’ perspectives about postoperative physical activity.
Major complications in extreme lateral interbody fusion access: multicentric study by Italian S.O.L.A.S. group
Andrea PiazzollaDavide BizzocaBiagio Moretti
doi : 10.1007/s00586-020-06542-0
Volume 30, issue 1, January 2021, Pages: 208 - 216
The eXtreme Lateral Interbody Fusion (XLIF) approach has gained increasing importance in the last decade. This multicentric retrospective cohort study aims to assess the incidence of major complications in XLIF procedures performed by experienced surgeons and any relationship between the years of experience in XLIF procedures and the surgeon’s rate of severe complications.
Terminal complement complex formation is associated with intervertebral disc degeneration
Graciosa Q. TeixeiraZhiyao YongCornelia Neidlinger-Wilke
doi : 10.1007/s00586-020-06592-4
Volume 30, issue 1, January 2021, Pages: 217 - 226
The complement system is a crucial part of innate immunity. Recent work demonstrated an unexpected contribution to tissue homeostasis and degeneration. This study investigated for the first time, in human disc tissues, the deposition profile of the complement activation product terminal complement complex (TCC), an inflammatory trigger and inducer of cell lysis, and its inhibitor CD59, and their correlation with the degree of disc degeneration (DD).
Superficial and deep lumbar multifidus layers of asymptomatic individuals: intraday and interday reliability of the echo intensity measurement
Elaine Mattos Senna ResendeViviane Bastos de OliveiraLiliam Fernandes de Oliveira
doi : 10.1007/s00586-020-06576-4
Volume 30, issue 1, January 2021, Pages: 227 - 231
Ultrasonography has been used to understand the functional and biomechanical aspects of the lumbar multifidus muscle in vivo. To characterize the multifidus echogenicity, the peculiarities of their superficial and deep layers must be considered.
Correction to: Management and prognosis of acute traumatic cervical central cord syndrome: systematic review and Spinal Cord Society—Spine Trauma Study Group position statement
P. K. Karthik YelamarthyH. S. ChhabraFrancois Theron
doi : 10.1007/s00586-020-06654-7
Volume 30, issue 1, January 2021, Pages: 232 - 233
Correction to: Major complications in extreme lateral interbody fusion access: multicentric study by Italian S.O.L.A.S. group
Andrea PiazzollaDavide BizzocaBiagio Moretti
doi : 10.1007/s00586-020-06614-1
Volume 30, issue 1, January 2021, Pages: 234 - 234
EUROSPINE Meeting 2020: Abstracts Virtual Annual Meeting, 6-9 October
doi : 10.1007/s00586-020-06682-3
Volume 30, issue 1, January 2021, Pages: 235 - 236
EUROSPINE Meeting 2020: Abstracts Virtual Annual Meeting, 6–9 October
doi : 10.1007/s00586-020-06683-2
Volume 30, issue 1, January 2021, Pages: 237 - 277
EUROSPINE Meeting 2020: Abstracts Virtual Annual Meeting, 6–9 October
doi : 10.1007/s00586-020-06685-0
Volume 30, issue 1, January 2021, Pages: 278 - 325
EUROSPINE Meeting 2020: Abstracts Virtual Annual Meeting, 6–9 October
doi : 10.1007/s00586-020-06684-1
Volume 30, issue 1, January 2021, Pages: 326 - 372
Index: EUROSPINE Meeting 2020: Abstracts Virtual Annual Meeting, October 6–9
doi : 10.1007/s00586-020-06686-z
Volume 30, issue 1, January 2021, Pages: 373 - 378
