John Pollina
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View article: Cervical laminectomy and fusion versus laminoplasty in degenerative cervical myelopathy: A propensity score matching analysis
Cervical laminectomy and fusion versus laminoplasty in degenerative cervical myelopathy: A propensity score matching analysis Open
Background: Degenerative cervical myelopathy (DCM) is a common cause of spinal cord dysfunction. The effectiveness of laminoplasty (LP) versus laminectomy with fusion (LF) for treating DCM is still debated. Here, we compared LP versus LF f…
View article: Effect of Supplemental Fixation on Fusion and Subsidence After Lateral Lumbar Interbody Fusion
Effect of Supplemental Fixation on Fusion and Subsidence After Lateral Lumbar Interbody Fusion Open
Background Lateral lumbar interbody fusion (LLIF) is currently popularized as an effective and safe approach to attain a lumbar fusion. The effect that supplemental fixation plays on fusion and subsidence rates after lateral lumbar surgery…
View article: Association of Alcohol Use Disorder and Perioperative Complications and Adverse Events After Spinal Fusion Surgery During the In-Hospital Period: An Analysis of the National Inpatient Sample Database
Association of Alcohol Use Disorder and Perioperative Complications and Adverse Events After Spinal Fusion Surgery During the In-Hospital Period: An Analysis of the National Inpatient Sample Database Open
We found that AUD carries a significantly negative influence over perioperative outcomes and adverse events after spinal fusion in a large database population.
View article: Treatment Strategies for Intermediate Spinal Instability Neoplastic Score Patients: A Systematic Review
Treatment Strategies for Intermediate Spinal Instability Neoplastic Score Patients: A Systematic Review Open
Complication rates after surgery versus radiotherapy in the intermediate SINS category are similar, but the complication types differ. Patients in the 10-12 SINS subgroup, due to larger lytic area and higher probability of vertebral body f…
View article: Advancing Prone-Transpsoas Spine Surgery: A Narrative Review and Evolution of Indications with Representative Cases
Advancing Prone-Transpsoas Spine Surgery: A Narrative Review and Evolution of Indications with Representative Cases Open
The Prone Transpsoas (PTP) approach to lumbar spine surgery, emerging as an evolution of lateral lumbar interbody fusion (LLIF), offers significant advantages over traditional methods. PTP has demonstrated increased lumbar lordosis gains c…
View article: Radiographic alignment outcomes after the single-position prone transpsoas approach: a multi-institutional retrospective review of 363 cases
Radiographic alignment outcomes after the single-position prone transpsoas approach: a multi-institutional retrospective review of 363 cases Open
OBJECTIVE The aim of this paper was to evaluate the changes in radiographic spinopelvic parameters in a large cohort of patients undergoing the prone transpsoas approach to the lumbar spine. METHODS A multicenter retrospective observationa…
View article: Can a Spine Robot Be More Efficient and Less Expensive While Maintaining Accuracy?
Can a Spine Robot Be More Efficient and Less Expensive While Maintaining Accuracy? Open
Spinal robots are being increasingly utilized in clinical practice. Lowering the cost of these systems and increasing their workflow efficiency should help patients and spine surgeons alike.
View article: Anatomical and Technical Considerations of Robot-Assisted Cervical Pedicle Screw Placement: A Cadaveric Study
Anatomical and Technical Considerations of Robot-Assisted Cervical Pedicle Screw Placement: A Cadaveric Study Open
Study Design Cadaver study. Objectives Assess the feasibility of robot-assisted cervical pedicle screw (RA-CPS) placement and understand the anatomical considerations of this technique. Methods Four cadaver specimens free from bony patholo…
View article: A multicenter study of the 5-year trends in robot-assisted spine surgery outcomes and complications
A multicenter study of the 5-year trends in robot-assisted spine surgery outcomes and complications Open
At four institutions among seven surgeons, we demonstrate robot screw accuracy, reliability, operative efficiency, and radiation exposure improved significantly from 2015 to 2019. 90-day complication rates remained low and LOS decreased si…
View article: Minimally Invasive Robot-Guided Dual Cortical Bone Trajectory for Adjacent Segment Disease
Minimally Invasive Robot-Guided Dual Cortical Bone Trajectory for Adjacent Segment Disease Open
Here we present a novel application of cortical bone trajectory (CBT) fixation utilizing robotic guidance in a previously instrumented spine with a traditional pedicle screw (PS), obviating the need for a larger posterior incision, reducin…
View article: The accuracy of robot-assisted S2 alar-iliac screw placement at two different healthcare centers
The accuracy of robot-assisted S2 alar-iliac screw placement at two different healthcare centers Open
Robot-assisted S2AI screw placement was found to be safe and accurate in this multicenter study. This is largely attributed to the versatility of the robotic guidance software that allows for detailed and precise preoperative and intraoper…
View article: Accuracy and Efficiency of Fusion Robotics™ Versus Mazor-X™ in Single-Level Lumbar Pedicle Screw Placement
Accuracy and Efficiency of Fusion Robotics™ Versus Mazor-X™ in Single-Level Lumbar Pedicle Screw Placement Open
Introduction There has been a surge in robot utilization in spine surgery over the past five years with the rapid development of new spine robotic platforms. This study aimed to compare a new robotic spine platform from Fusion RoboticsTM (…
View article: The effect of COVID-19 on trainee operative experience at a multihospital academic neurosurgical practice: A first look at case numbers
The effect of COVID-19 on trainee operative experience at a multihospital academic neurosurgical practice: A first look at case numbers Open
Background: COVID-19 has had a significant impact on the economy, health care, and society as a whole. To prevent the spread of infection, local governments across the United States issued mandatory lockdowns and stay-at-home orders. In th…
View article: Do robot-related complications influence 1 year reoperations and other clinical outcomes after robot-assisted lumbar arthrodesis? A multicenter assessment of 320 patients
Do robot-related complications influence 1 year reoperations and other clinical outcomes after robot-assisted lumbar arthrodesis? A multicenter assessment of 320 patients Open
Background Robot-assisted platforms in spine surgery have rapidly developed into an attractive technology for both the surgeon and patient. Although current literature is promising, more clinical data is needed. The purpose of this paper i…
View article: Introduction. Operative imaging and visualization: cutting edge techniques and future directions
Introduction. Operative imaging and visualization: cutting edge techniques and future directions Open
It is hard to image anything that has had more of an impact on our specialty over the years than advancements in imaging and visualization of the brain and spine.From early use of the operative microscope, to the advent of CT and MRI, and …
View article: Prone Transpsoas Approach for Adjacent Segment Disease and Flatback Deformity: Technical Note and Case Report
Prone Transpsoas Approach for Adjacent Segment Disease and Flatback Deformity: Technical Note and Case Report Open
The prone transpsoas approach is a relatively new technique to correct segmental kyphosis and global sagittal imbalance in a minimally invasive fashion. Here, we provide a detailed case report using the prone transpsoas approach to address…
View article: Antiviral therapy: Valacyclovir Treatment of Alzheimer’s Disease (VALAD) Trial: protocol for a randomised, double-blind,placebo-controlled, treatment trial
Antiviral therapy: Valacyclovir Treatment of Alzheimer’s Disease (VALAD) Trial: protocol for a randomised, double-blind,placebo-controlled, treatment trial Open
Introduction After infection, herpes simplex virus-1 (HSV1) becomes latent in the trigeminal ganglion and can enter the brain via retrograde axonal transport. Recurrent reactivation of HSV1 may lead to neurodegeneration and Alzheimer’s dis…
View article: Bowel injury in lumbar spine surgery: a review of the literature
Bowel injury in lumbar spine surgery: a review of the literature Open
Although rarely documented in the medical literature, bowel perforation injury can be a severe complication of spine surgery. Our goal was to review current literature regarding this complication and study possible methods of avoidance. We…
View article: Cervical sagittal balance parameters after single-level anterior cervical discectomy and fusion: Correlations with clinical and functional outcomes
Cervical sagittal balance parameters after single-level anterior cervical discectomy and fusion: Correlations with clinical and functional outcomes Open
Single-level ACDF significantly increases upper cervical lordosis (C1-C2) without significantly changing lower cervical lordosis (C2-C7). The C7 slope is a significant marker of overall cervical sagittal alignment (P < 0.05).
View article: Correlation of Clinical and Radiological Outcome After Anterior Cervical Discectomy and Fusion With a Polyetheretherketone Cage
Correlation of Clinical and Radiological Outcome After Anterior Cervical Discectomy and Fusion With a Polyetheretherketone Cage Open
In our study, reduction of cervical lordosis and sagittal ROM did not appear to significantly influence on patients' self-reported disability. Such findings further highlight the greater role of pain level over the mechanical limitations o…
View article: Percutaneous screw placement in the lumbar spine with a modified guidance technique based on 3D CT navigation system
Percutaneous screw placement in the lumbar spine with a modified guidance technique based on 3D CT navigation system Open
Several guidance techniques have been employed to increase accuracy and reduce surgical time during percutaneous placement of pedicle screws (PS). The purpose of our study was to present a modified technique for percutaneous placement of l…
View article: C1-C2 Posterior Cervical Fixation by a Harms Technique Modification
C1-C2 Posterior Cervical Fixation by a Harms Technique Modification Open
Introduction: The unique anatomy of the upper cervical spine in conjunction with its supportive role in the axial stabilization and rotatory function of the head increases the surgical risk and associated complications for corrective surge…
View article: The role of diffusion tensor imaging and fractional anisotropy in the evaluation of patients with idiopathic normal pressure hydrocephalus: a literature review
The role of diffusion tensor imaging and fractional anisotropy in the evaluation of patients with idiopathic normal pressure hydrocephalus: a literature review Open
OBJECTIVE Diffusion tensor imaging (DTI) for the assessment of fractional anisotropy (FA) and involving measurements of mean diffusivity (MD) and apparent diffusion coefficient (ADC) represents a novel, MRI-based, noninvasive technique tha…
View article: Posterior Reversible Encephalopathy Syndrome Resolving Within 48 Hours in a Normotensive Patient Who Underwent Thoracic Spine Surgery
Posterior Reversible Encephalopathy Syndrome Resolving Within 48 Hours in a Normotensive Patient Who Underwent Thoracic Spine Surgery Open
Posterior reversible encephalopathy syndrome (PRES) usually manifests with severe headaches, seizures, and visual disturbances due to uncontrollable hypertension. A patient (age in the early 60s) with a history of renal cell cancer present…
View article: Hemoptysis as the Presenting Clinical Sign of a T8-T9 Spine Fracture with Diffuse Idiopathic Skeletal Hyperostosis Changes
Hemoptysis as the Presenting Clinical Sign of a T8-T9 Spine Fracture with Diffuse Idiopathic Skeletal Hyperostosis Changes Open
Diffuse idiopathic skeletal hyperostosis (DISH) is a noninflammatory degenerative disease that affects multiple spine levels and, in combination with osteoporosis, makes vertebrae more prone to fractures, especially in elderly people. We d…