2024
Robotic-Assisted Versus Navigation-Assisted Posterior Lumbar Fusion
Gouzoulis M, Seddio A, Winter A, Jabbouri S, Zhu J, Rubio D, Varthi A, Grauer J. Robotic-Assisted Versus Navigation-Assisted Posterior Lumbar Fusion. Spine 2024, 49: 1483-1487. PMID: 38717329, DOI: 10.1097/brs.0000000000005032.Peer-Reviewed Original ResearchPosterior lumbar fusionLumbar fusionAdverse eventsLevel posterior lumbar fusionsCPT codesKaplan-Meier survival analysisRate of reoperationNavigation-assisted surgeryRobotic-assisted casesNavigation-assistedMinor adverse eventsPerioperative adverse eventsMultivariate logistic regressionICD-10 procedure codeRobotic cohortRobotic assistanceSpinal navigationReoperation rateAnterior fusionElixhauser Comorbidity IndexPearlDiver databaseNo significant differenceIncremental advantageAdverse outcomesComorbidity index
2023
Ninety day adverse events following single level posterior lumbar interbody fusion in patients with sickle cell disease
Dhodapkar M, Halperin S, Saifi C, Whang P, Grauer J, Varthi A. Ninety day adverse events following single level posterior lumbar interbody fusion in patients with sickle cell disease. The Spine Journal 2023, 24: 807-811. PMID: 38081460, DOI: 10.1016/j.spinee.2023.11.025.Peer-Reviewed Original ResearchPosterior lumbar interbody fusionSingle-level posterior lumbar interbody fusionSickle cell diseaseElixhauser Comorbidity IndexAdverse eventsPostoperative outcomesInterbody fusionOdds ratioCell diseaseDays adverse eventsMinor adverse eventsPostoperative adverse eventsPerioperative adverse eventsSevere adverse eventsCohort of patientsED visit ratesEmergency department visitsMultivariable logistic regressionNational administrative databaseRetrospective database studyLumbar interbody fusionSingle level posteriorComorbidity indexPLIF patientsAdult patients
2022
Comparison of postoperative outcomes in patients with and without osteoporosis undergoing single-level anterior cervical discectomy and fusion
Kammien AJ, Galivanche AR, Joo PY, Elaydi A, Whang P, Saifi C, Grauer JN, Varthi A. Comparison of postoperative outcomes in patients with and without osteoporosis undergoing single-level anterior cervical discectomy and fusion. North American Spine Society Journal (NASSJ) 2022, 12: 100174. PMID: 36299450, PMCID: PMC9589019, DOI: 10.1016/j.xnsj.2022.100174.Peer-Reviewed Original ResearchSingle-level anterior cervical discectomyAnterior cervical discectomyAdverse eventsCervical discectomySingle-level ACDF proceduresSurgical planningComorbidity-matched patientsPerioperative adverse eventsSingle-level ACDFLog-rank analysisLong-term outcomesNational administrative databaseSetting of osteoporosisACDF proceduresConcomitant proceduresPatient characteristicsPostoperative outcomesGraft subsidenceOsteoporosis groupBony unionPatient counselingPatient counsellingAdministrative databasesReoperationExclusion criteriaUnderweight patients are the highest risk body mass index group for perioperative adverse events following stand-alone anterior lumbar interbody fusion
Ottesen TD, Galivanche AR, Greene JD, Malpani R, Varthi AG, Grauer JN. Underweight patients are the highest risk body mass index group for perioperative adverse events following stand-alone anterior lumbar interbody fusion. The Spine Journal 2022, 22: 1139-1148. PMID: 35231643, DOI: 10.1016/j.spinee.2022.02.012.Peer-Reviewed Original ResearchConceptsBody mass indexNational Surgical Quality Improvement Program databaseQuality Improvement Program databaseAnterior lumbar interbody fusionObese class 1Improvement Program databaseClass 2 patientsAdverse eventsUnderweight patientsBMI categoriesAdverse outcomesBMI spectrumInterbody fusionProgram databaseTwo-level anterior lumbar interbody fusionSurgeons National Surgical Quality Improvement Program databaseMultivariate analysisThirty-day adverse eventsWorld Health Organization categoriesBody mass index groupsPostoperative adverse eventsRetrospective cohort studyPerioperative adverse eventsNormal-weight subjectsPost-operative infection
2021
COVID-positive ankle fracture patients are at increased odds of perioperative surgical complications following open reduction internal fixation surgery
Mercier MR, Galivanche AR, Brand JP, Pathak N, Medvecky MJ, Varthi AG, Rubin LE, Grauer JN. COVID-positive ankle fracture patients are at increased odds of perioperative surgical complications following open reduction internal fixation surgery. PLOS ONE 2021, 16: e0262115. PMID: 34972190, PMCID: PMC8719674, DOI: 10.1371/journal.pone.0262115.Peer-Reviewed Original ResearchConceptsCOVID-positive patientsAnkle fracture surgeryPerioperative adverse eventsAdverse eventsAnkle fracture patientsFracture surgeryFracture patientsOperative interventionAnkle fracturesPropensity matchingCOVID statusOpen reduction internal fixation surgeryPerioperative adverse outcomesPerioperative surgical complicationsMinor adverse eventsPostoperative adverse eventsSerious adverse eventsChronic kidney diseaseCOVID-19 Research DatabaseLong-term outcomesInternal fixation surgeryBasis of agePropensity-score matchingPostoperative complicationsNegative patients
2018
Different Fusion Approaches for Single-level Lumbar Spondylolysis Have Similar Perioperative Outcomes
Gala RJ, Bovonratwet P, Webb ML, Varthi AG, Daubs MD, Grauer JN. Different Fusion Approaches for Single-level Lumbar Spondylolysis Have Similar Perioperative Outcomes. Spine 2018, 43: e111-e117. PMID: 28591074, DOI: 10.1097/brs.0000000000002262.Peer-Reviewed Original ResearchConceptsTransforaminal lumbar interbody fusionAnterior lumbar interbody fusionPosterior spinal fusionPerioperative adverse eventsAdverse eventsLong-term outcomesLumbar interbody fusionLumbar spondylolysisPerioperative outcomesOperative timeSurgical approachFusion groupInterbody fusionSurgeons National Surgical Quality Improvement databaseNational Surgical Quality Improvement databasePerioperative adverse event ratesSimilar long-term outcomesPropensity scoreMinor adverse eventsPrevious cohort studiesSerious adverse eventsSimilar perioperative outcomesAdverse event ratesIndividual adverse eventsQuality improvement database