Matthew D. Riedel, MD
Assistant Professor of Orthopaedics & RehabilitationCards
About
Research
Publications
2023
Risk of Contralateral Hip Fracture Following Initial Hip Fracture Among Geriatric Fragility Fracture Patients
Ratnasamy P, Rudisill K, Oghenesume O, Riedel M, Grauer J. Risk of Contralateral Hip Fracture Following Initial Hip Fracture Among Geriatric Fragility Fracture Patients. JAAOS Global Research And Reviews 2023, 7: e23.00001. PMID: 37428152, PMCID: PMC10332831, DOI: 10.5435/jaaosglobal-d-23-00001.Peer-Reviewed Original ResearchConceptsContralateral hip fractureInitial hip fractureKaplan-Meier survival analysisGeriatric hip fracturesHip fractureSurvival analysisFragility fracture patientsIndex hip fractureHip fracture fixationKaplan-Meier analysisBody mass indexMultivariate logistic regressionFracture patientsContralateral fractureIndependent predictorsGeriatric patientsHigh morbidityMass indexPatient mortalityFemale sexNational cohortRisk factorsFracture fixationMultivariate analysisLogistic regressionAspirin or Low-Molecular-Weight Heparin for Thromboprophylaxis after a Fracture.
Major Extremity Trauma Research Consortium (METRC), O'Toole RV, Stein DM, O'Hara NN, Frey KP, Taylor TJ, Scharfstein DO, Carlini AR, Sudini K, Degani Y, Slobogean GP, Haut ER, Obremskey W, Firoozabadi R, Bosse MJ, Goldhaber SZ, Marvel D, Castillo RC. Aspirin or Low-Molecular-Weight Heparin for Thromboprophylaxis after a Fracture. N Engl J Med 2023, 388: 203-213. PMID: 36652352, DOI: 10.1056/NEJMoa2205973.Peer-Reviewed Original Research
2022
Comparing Outcomes in Cemented and Press-Fit Hemiarthroplasty
Brand J, Ani L, Rankin KA, McLaughlin WM, Joo PY, Li DT, Riedel M, Leslie M. Comparing Outcomes in Cemented and Press-Fit Hemiarthroplasty. Journal Of The American Academy Of Orthopaedic Surgeons 2022, 30: 979-983. PMID: 35551159, DOI: 10.5435/jaaos-d-21-01178.Peer-Reviewed Original ResearchConceptsFemoral neck fracturesNeck fracturesRevision surgeryContralateral fractureHip fractureLonger survivalGeriatric femoral neck fracturesLevel 1 trauma centerSurgery-free survivalFragility hip fractureContralateral hip fractureStandard of careMajor end pointsDate of deathLonger survival timeMore comorbiditiesHospital lengthRepeat surgeryAnesthesiologists statusTrauma centerDecreased riskRepeat proceduresComparing outcomesGeriatric cohortSame hip
2021
Penetrating deep pelvic injury due to “less-lethal” beanbag munitions: a case report and policy implications
Schenck CS, Lokeshwar SD, Riedel MD, Davis KA. Penetrating deep pelvic injury due to “less-lethal” beanbag munitions: a case report and policy implications. Trauma Surgery & Acute Care Open 2021, 6: e000754. PMID: 34041366, PMCID: PMC8112415, DOI: 10.1136/tsaco-2021-000754.Peer-Reviewed Original ResearchSevere injuriesLethal munitionsExcellent functional outcomeCases of osteomyelitisPelvic abscessFunctional outcomeCase reportSurgical removalPelvic injuriesPermanent disabilityLong-term consequencesInjurySerious injuriesOsteomyelitisPatientsPublic healthRecent reportsReportAbscessDebridementPelvicCareAnalysis of Computed Tomography–Based Technique for Measuring Femoral Anteversion: Implications for Measuring Rotation After Femoral Intramedullary Nail Insertion
McAlister IP, Marchand LS, Napora JK, Riedel MD, Shannon SS, O'Hara NN, Langhammer CG, LeBrun C, Nascone JW, Sciadini MF, O'Toole RV. Analysis of Computed Tomography–Based Technique for Measuring Femoral Anteversion: Implications for Measuring Rotation After Femoral Intramedullary Nail Insertion. Journal Of Orthopaedic Trauma 2021, 35: 239-244. PMID: 32956208, DOI: 10.1097/bot.0000000000001969.Peer-Reviewed Original ResearchConceptsMagnitude of sideSide differenceIntraclass correlation coefficientMean sideComputed tomographyFemoral anteversionCross-sectional cohort studyInterobserver reliabilityAcademic trauma centerIntramedullary nail insertionFixed-effects modelCohort studyTrauma centerNail insertionCT scanRight sideIntraobserver reproducibilityAbsolute differenceAxial cutsAnteversionFemurPatientsScansSide variationTomography
2020
Measuring Lateral Screw Protuberance Is a Clinically Accurate Method for Quantifying Femoral Neck Shortening.
Sepehri A, Martinson J, Marchand LS, Riedel MD, McAlister IP, O'Hara NN, Stockton DJ, Slobogean GP. Measuring Lateral Screw Protuberance Is a Clinically Accurate Method for Quantifying Femoral Neck Shortening. Journal Of Orthopaedic Trauma 2020, 34: 600-605. PMID: 33065661, DOI: 10.1097/bot.0000000000001806.Peer-Reviewed Original ResearchConceptsFemoral neck shorteningFemoral neckAnterior-posterior radiographsExternal rotationFemoral rotationNeck shorteningC-arm fluoroscopyExtreme external rotationCancellous screwsFemoral shaftSecondary aimIntraclass coefficientInterobserver reliabilityNeckTime pointsInternal rotationSignificant differencesSawbone modelRadiographsExcellent reliabilityAgreement statisticsMeasurement techniquesShorteningSPM techniquesReliable assessmentBiomechanical comparison of distal femoral fracture fixation: Analysis of non‐locked, locked, and far‐cortical locked constructs
Riedel MD, Oppizzi G, O'Hara NN, Zhang C, Koh K, Slobogean GP, Zhang L, O'Toole RV. Biomechanical comparison of distal femoral fracture fixation: Analysis of non‐locked, locked, and far‐cortical locked constructs. Journal Of Orthopaedic Research® 2020, 38: 2573-2579. PMID: 32470168, DOI: 10.1002/jor.24756.Peer-Reviewed Original ResearchConceptsPlate constructDiaphyseal screwsFCL screwsFracture site displacementFracture siteCortical locking screwsPrimary outcome measureSupracondylar femoral fracturesDistal femoral fracture fixationFemoral fracture fixationFemoral fracturesOutcome measuresFracture healingLocking screwsFracture fixationNonlocking screwsNonlocking constructsFracture site stiffnessFracture gapLocked constructsRandom orderBiomechanical ComparisonBiomechanical propertiesScrewsSite stiffnessAnticoagulation Strategies for the Orthopaedic Surgeon: Reversal and Timelines.
Riedel MD, Watkins IT, McCormick JR, Van Lancker HP. Anticoagulation Strategies for the Orthopaedic Surgeon: Reversal and Timelines. Archives Of Bone And Joint Surgery 2020, 8: 457-460. PMID: 32766408, PMCID: PMC7358245, DOI: 10.22038/abjs.2019.44803.2222.Peer-Reviewed Original ResearchSystemic Parathyroid Hormone Enhances Fracture Healing in Multiple Murine Models of Type 2 Diabetes Mellitus
Alder K, White A, Chung Y, Lee I, Back J, Kwon H, Cahill S, Hao Z, Li L, Chen F, Lee S, Riedel M, Lee F. Systemic Parathyroid Hormone Enhances Fracture Healing in Multiple Murine Models of Type 2 Diabetes Mellitus. JBMR Plus 2020, 4: e10359. PMID: 32382692, PMCID: PMC7202418, DOI: 10.1002/jbm4.10359.Peer-Reviewed Original ResearchRisk of fractureFracture healingMurine modelType 2 diabetes mellitusPTH expressionEffects of hPTHIntermittent systemic administrationSuitable murine modelPrevalence of T2DMAge-related osteoporosisDiabetes mellitusPresent studySystemic administrationSkeletal fragilityMultisystemic diseaseT2DMOsteoporotic phenotypeBone qualityBone fracturesCalcium homeostasisMesenchymal stem cellsBone phenotypeHormone productionHPTHHealingTibial Shaft Fractures: Intramedullary Nailing, In: Master Techniques in Orthopaedic Surgery: Fractures
Riedel MD, O’Toole, RV. Chapter 27: Tibial Shaft Fractures: Intramedullary Nailing, In: Master Techniques in Orthopaedic Surgery: Fractures, 4e. Gardner. Wolters Kluwer, 543-572, Dec 2020.Chapters
Clinical Trials
Current Trials
DIFFIR - Geriatric Distal Femur Fixation Versus Replacement (DIFFIR)
HIC ID2000029962RoleSub InvestigatorPrimary Completion Date06/10/2022Recruiting ParticipantsGenderBothAge65+ years
Academic Achievements & Community Involvement
Clinical Care
Overview
An orthopedic trauma surgeon, Matthew Riedel, MD, treats a variety of injuries stemming from car crashes, industrial accidents, and simple trips and falls.
“I see kids through geriatrics, often meeting people during one of their worst moments,” Dr. Riedel says. “I find it very fulfilling to help them during these tough times and watch them get back to doing what they love.”
Growing up, he developed an affinity for working with his hands from spending time at his father’s tool and die shop. “It ties in very well with orthopedics because we’re using plates and screws and metal rods all the time in surgery,” Dr. Riedel says.
Dr. Riedel’s research interests include studying clinical outcomes for patients after suffering a broken bone, whether treated operatively or nonoperatively. He is also interested in improving the biomechanics of surgical implants. “This involves looking at the material properties of the implants we use to try to match bone as closely as possible, so that the bone heals better and the implants are more comfortable for the body,” he explains.
The range of cases he works on daily helps fuel research ideas, Dr. Riedel notes. “Every time you’re working on a patient, you’re saying, ‘Is there a better way we could do this to improve my patients’ outcomes? Is there a better implant we could use, or a new way to orient the screws, the rods, or do something different?’” he says. “This not only gives us a chance to think about ways to develop new technology and advance the field, but also provide each individual patient more specific and successful care because every patient and injury that comes in is unique and different from the last.”
Dr. Riedel is an assistant professor of orthopedic surgery at Yale School of Medicine.
Clinical Specialties
Fact Sheets
Broken Ankle (Ankle Fracture)
Learn More on Yale MedicineComplex Fracture
Learn More on Yale MedicineRib Fracture (Broken Rib)
Learn More on Yale MedicineGeriatric Hip Fractures
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Yale Medicine News
News
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Four UConn students hospitalized following sledding collisions
- May 24, 2022
Comparing Outcomes in Cemented and Press-Fit Hemiarthroplasty
- August 31, 2020
Introducing Orthopaedics Through Medical Device Design