2025
Risk of Distal Femur Fracture in Antegrade Intramedullary Nail Fixation of Proximal Femur Fractures: A Finite Element Study
Roytman G, Lahik S, Tommasini S, Wiznia D, Fram B. Risk of Distal Femur Fracture in Antegrade Intramedullary Nail Fixation of Proximal Femur Fractures: A Finite Element Study. Journal Of Orthopaedic Research® 2025 PMID: 40443200, DOI: 10.1002/jor.26113.Peer-Reviewed Original ResearchSingle-leg stanceAntegrade intramedullary nailingTip terminationMaximum stressFinite element modelFinite element studyFemur fracturesDistal femur fracturesExtent of failureElement modelLoading scenariosBody weight loadElement studyIntramedullary nail fixationProximal femur fracturesOsteoporotic femursRisk of peri-implant fractureNail fixationWeight loadingIntramedullary nailingLoadPeri-implant fracturesGeriatric patients
2024
Sustentaculum fracture fixation with lateral plate or medial screw fixation are equivalent
Roytman G, Salameh M, Rizzo S, Dhodapkar M, Tommasini S, Wiznia D, Yoo B. Sustentaculum fracture fixation with lateral plate or medial screw fixation are equivalent. Injury 2024, 55: 111532. PMID: 38614015, DOI: 10.1016/j.injury.2024.111532.Peer-Reviewed Original ResearchSubtalar jointCadaveric anklesSustentaculum tali fracturesFresh-frozen cadaveric anklesT-testAssess patient outcomesPaired t-testUn-paired t-testAnkle modelAnkleRight ankleLeft ankleMid-tibiaPatient outcomesRetrospective observational studyScrew fixationObservational studyMethod of fixationFracture fixationBiomechanical functionMedial approachBody massFixation methodsInterosseous ligamentNo significant differenceFabricating patient-specific 3D printed drill guides to treat femoral head avascular necrosis
Bell C, Feizi A, Roytman G, Ramji A, Tommasini S, Wiznia D. Fabricating patient-specific 3D printed drill guides to treat femoral head avascular necrosis. 3D Printing In Medicine 2024, 10: 10. PMID: 38564090, PMCID: PMC10986134, DOI: 10.1186/s41205-024-00208-z.Peer-Reviewed Original ResearchUsing Computed Tomography-Based Three-dimensional Modeling and Computer Navigation for Minimally Invasive Core Decompression and Adjuvant Orthobiologic Therapy of Femoral Head Avascular Necrosis
Feizi A, Bell C, Roytman G, Park N, Wang A, Tommasini S, Wiznia D. Using Computed Tomography-Based Three-dimensional Modeling and Computer Navigation for Minimally Invasive Core Decompression and Adjuvant Orthobiologic Therapy of Femoral Head Avascular Necrosis. Arthroplasty Today 2024, 26: 101337. PMID: 38497084, PMCID: PMC10940782, DOI: 10.1016/j.artd.2024.101337.Peer-Reviewed Original ResearchFemoral head avascular necrosisAvascular necrosisSurgical techniqueCore decompressionBone marrow aspirate concentrateDelay disease progressionOutcome of core decompressionAdjuvant therapyCellular therapyAspirate concentrateDisease progressionFemoral head collapseImprove outcomesLesionsDebilitating conditionTherapyComputer navigationNecrosisDecompressionHead collapseThree-dimensional modelFemoral headOff-the-Shelf Tibial Cone Sizes May Not Accommodate All Patients’ Bone Morphology and May Lead to Cortical Breaches in Revision Total Knee Arthroplasty: A 3D Modeling Study
Tung W, Kunsel K, Roytman G, Donnelley C, Pratola D, Tommasini S, Bernstein J, Wiznia D. Off-the-Shelf Tibial Cone Sizes May Not Accommodate All Patients’ Bone Morphology and May Lead to Cortical Breaches in Revision Total Knee Arthroplasty: A 3D Modeling Study. Arthroplasty Today 2024, 26: 101340. PMID: 38455865, PMCID: PMC10918480, DOI: 10.1016/j.artd.2024.101340.Peer-Reviewed Original ResearchThe feasibility of a novel 3D-Printed patient specific cutting guide for extended trochanteric osteotomies
Bergemann R, Roytman G, Ani L, Ramji A, Leslie M, Tommasini S, Wiznia D. The feasibility of a novel 3D-Printed patient specific cutting guide for extended trochanteric osteotomies. 3D Printing In Medicine 2024, 10: 7. PMID: 38427157, PMCID: PMC10905807, DOI: 10.1186/s41205-024-00204-3.Peer-Reviewed Original ResearchPatient-specific cutting guidesCutting guidesPlanned osteotomySoft tissue injuriesTotal hip arthroplasty surgeryCT scanSurgical techniqueRevision total hip arthroplasty surgeryClinical trialsPerformed osteotomyHip arthroplasty surgeryTissue injuryNon-unionPatientsCadaveric testingSimpleware ScanIPOsteotomySoft tissueTrochanteric osteotomyProximal femurArthroplasty surgeryIntramedullary canalHuman subjectsExtended trochanteric osteotomyFemoral canalOutcomes of Distal Third Femur Fractures in Patients 18 Years and Older: A Pilot Study
Roytman G, Jabbouri S, O'Marr J, Raghuram A, Beitler B, Irshad S, Fram B, Yoo B, Leslie M, Riedel M, Tommasini S, Wiznia D. Outcomes of Distal Third Femur Fractures in Patients 18 Years and Older: A Pilot Study. Cureus 2024, 16: e55136. PMID: 38558586, PMCID: PMC10979706, DOI: 10.7759/cureus.55136.Peer-Reviewed Original Research
2023
An analytical model of lateral condylar plate working length
Roytman G, Beitler B, LaMonica J, Spero M, Toy K, Ramji A, Yoo B, Leslie M, Baumgaertner M, Tommasini S, Wiznia D. An analytical model of lateral condylar plate working length. Clinical Biomechanics 2023, 110: 106129. PMID: 37871506, PMCID: PMC10848195, DOI: 10.1016/j.clinbiomech.2023.106129.Peer-Reviewed Original Research
2022
Personalizing Revision Tibial Baseplate Position and Stem Trajectory With Custom Implants Using 3D Modeling to Optimize Press-fit Stem Placement
Cooperman C, Wiznia D, Kunsel K, Roytman G, Ani L, Pratola D, Lee GC, Tommasini S, Bernstein J. Personalizing Revision Tibial Baseplate Position and Stem Trajectory With Custom Implants Using 3D Modeling to Optimize Press-fit Stem Placement. Arthroplasty Today 2022, 18: 45-51. PMID: 36267389, PMCID: PMC9576531, DOI: 10.1016/j.artd.2022.08.011.Peer-Reviewed Original ResearchAn open-access plug-in program for 3D modelling distinct material properties of cortical and trabecular bone
Roytman GR, Cutler M, Milligan K, Tommasini SM, Wiznia DH. An open-access plug-in program for 3D modelling distinct material properties of cortical and trabecular bone. BMC Biomedical Engineering 2022, 4: 8. PMID: 36153577, PMCID: PMC9509591, DOI: 10.1186/s42490-022-00065-z.Peer-Reviewed Original ResearchMaterial propertiesFinite element analysisSoftware suiteDistinct material propertiesApparent density valuesMaterial behaviorElement analysisSilico experimentationYoung's modulusPersonalized simulationPower law equationTrabecular bone material propertiesGrayscale valuesBone material propertiesLaw equationModulusPlugDensity valuesConstituent elementsTrabecular boneWorkflowFilesPowerful toolPropertiesObjectsSimulating Prophylactic Fixation Methods for Osteoporotic Femoral Neck Fracture Prevention
Roytman G, Ramji A, Beitler B, Yoo B, Leslie M, Baumgaertner M, Tommasini S, Wiznia D. Simulating Prophylactic Fixation Methods for Osteoporotic Femoral Neck Fracture Prevention. Geriatric Orthopaedic Surgery & Rehabilitation 2022, 13: 21514593221141376. PMID: 36533207, PMCID: PMC9747871, DOI: 10.1177/21514593221141376.Peer-Reviewed Original ResearchFemoral neck systemDynamic hip screwExternal forcesImpact scenariosFemoral neck fracturesSingle-leg stanceFemoral neckHigh stiffnessFall scenariosNeck fracturesFracture patternsLeg stanceConstruct stiffnessLateral impactStiffnessChoice of implantsDifferent implantsSawbone femurProphylactic stabilizationGeriatric patientsHigh morbidityFracture preventionProphylactic fixationSurgical correctionClinical trialsEvaluating surface coatings to reduce bone cement adhesion to point of care 3D printed molds in the intraoperative setting
Beitler B, Roytman GR, Parmer G, Tommasini SM, Wiznia DH. Evaluating surface coatings to reduce bone cement adhesion to point of care 3D printed molds in the intraoperative setting. 3D Printing In Medicine 2022, 8: 28. PMID: 35960406, PMCID: PMC9373469, DOI: 10.1186/s41205-022-00156-6.Peer-Reviewed Original ResearchCorrection: Accuracy of guide wire placement for femoral neck stabilization using 3D printed drill guides
Roytman GR, Ramji AF, Beitler B, Yoo B, Leslie MP, Baumgaertner M, Tommasini S, Wiznia DH. Correction: Accuracy of guide wire placement for femoral neck stabilization using 3D printed drill guides. 3D Printing In Medicine 2022, 8: 26. PMID: 35943613, PMCID: PMC9361542, DOI: 10.1186/s41205-022-00153-9.Peer-Reviewed Original Research
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