2019
ACL Graft Signal Characteristics Measured by Quantitative MRI Are Significantly Correlated with Patient Reported Outcomes Two-Years after Hamstring Autograft ACL Reconstruction
Lansdown D, Xiao W, Zhang A, Allen C, Feeley B, Li X, Majumdar S, Benjamin C. ACL Graft Signal Characteristics Measured by Quantitative MRI Are Significantly Correlated with Patient Reported Outcomes Two-Years after Hamstring Autograft ACL Reconstruction. Orthopaedic Journal Of Sports Medicine 2019, 7: 2325967119s00352. PMCID: PMC6664639, DOI: 10.1177/2325967119s00352.Peer-Reviewed Original ResearchKnee Osteoarthritis Outcome ScoreACL reconstructionAnterior cruciate ligamentACL graftT1rho relaxation timesTendon graftHamstring autograft ACL reconstructionPatient-reported knee functionPatient-reported outcome measuresAutograft ACL reconstructionOsteoarthritis Outcome ScoreTime pointsPrior knee surgeryArthroscopic ACL reconstructionT2 relaxation timesPatient reported outcomesHistory of arthritisProteoglycan contentNon-invasive assessmentQuantitative imaging markerKOOS SportKOOS scoresAllograft reconstructionCollagen organizationKnee functionPartial Transphyseal Anterior Cruciate Ligament Reconstruction: Clinical, Functional, and Radiographic Outcomes
Chambers CC, Monroe EJ, Allen CR, Pandya NK. Partial Transphyseal Anterior Cruciate Ligament Reconstruction: Clinical, Functional, and Radiographic Outcomes. The American Journal Of Sports Medicine 2019, 47: 1353-1360. PMID: 30995077, DOI: 10.1177/0363546519836423.Peer-Reviewed Original ResearchConceptsMechanical lateral distal femoral angleMedial proximal tibial angleTransphyseal ACL reconstructionMechanical axis deviationACL reconstructionGraft failureGrowth disturbanceReoperation rateACL injuryRadiographic outcomesFunctional outcomePediatric International Knee Documentation Committee scoreInternational Knee Documentation Committee scoreSubsequent revision ACL reconstructionAnterior cruciate ligament injuryLateral distal femoral angleOptimal reconstruction techniquePostoperative growth disturbanceGraft failure rateCruciate ligament injuryGood functional outcomeProximal tibial angleSubset of patientsRevision ACL reconstructionDistal femoral anglePARTIAL TRANSPHYSEAL ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION: CLINICAL, FUNCTIONAL, AND RADIOGRAPHIC OUTCOMES
Pandya N, Allen C, Monroe E, Chambers C. PARTIAL TRANSPHYSEAL ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION: CLINICAL, FUNCTIONAL, AND RADIOGRAPHIC OUTCOMES. Orthopaedic Journal Of Sports Medicine 2019, 7: 2325967119s00081. PMCID: PMC6446351, DOI: 10.1177/2325967119s00081.Peer-Reviewed Original ResearchMedial proximal tibial angleTransphyseal ACL reconstructionMechanical axis deviationLimb length discrepancyTransphyseal Anterior Cruciate Ligament ReconstructionMechanical lateral distal femoral angleAnterior cruciate ligament reconstructionGraft failure rateCruciate ligament reconstructionACL reconstructionRevision ACL reconstructionDistal femoral physisLength discrepancyRadiographic outcomesGrowth disturbanceGraft failureClinical outcomesLigament reconstructionTibial physisFemoral tunnelTibial tunnelFemoral physisInclusion criteriaLimb lengthSignificant limb length discrepancy
2018
Knee Imaging Following Anterior Cruciate Ligament Reconstruction: The Surgeon's and Radiologist's Perspectives
Srinivasan R, Wan J, Allen CR, Steinbach LS. Knee Imaging Following Anterior Cruciate Ligament Reconstruction: The Surgeon's and Radiologist's Perspectives. Seminars In Musculoskeletal Radiology 2018, 22: 386-397. PMID: 30134463, DOI: 10.1055/s-0038-1653953.Peer-Reviewed Original ResearchConceptsACL reconstructionAnterior cruciate ligament tearsNormal imaging appearanceACL reconstruction surgeryCruciate ligament tearsExcellent postoperative resultsMagnetic resonance imagingMost patientsLigament tearsLigamentous injuriesCommon injuriesPostoperative resultsImaging appearancesReconstruction surgerySurgical techniqueCommon causeRecurrent instabilityReconstruction failureCartilage damageChronic instabilityEarly osteoarthritisMeniscal tearsResonance imagingPatientsRadiologist's perspective
2016
Accuracy of MRI evaluation of meniscus tears in the setting of ACL injuries
Dufka FL, Lansdown DA, Zhang AL, Allen CR, Ma CB, Feeley BT. Accuracy of MRI evaluation of meniscus tears in the setting of ACL injuries. The Knee 2016, 23: 460-464. PMID: 26917035, DOI: 10.1016/j.knee.2016.01.018.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingLateral meniscus tearsMedial meniscus tearPre-operative magnetic resonance imagingNegative predictive valuePositive predictive valueACL reconstructionMeniscus tearsACL injuryPredictive valueAnterior cruciate ligament reconstructionNPV of MRIConcomitant meniscus injuryDiagnostic performancePrimary ACL reconstructionCruciate ligament reconstructionPre-operative detectionHigh diagnostic performanceOperative interventionACL tearsLigament reconstructionOperative treatmentInitial injuryMRI evaluationMeniscus injury
2015
Osteonecrosis of the Knee After Anterior Cruciate Ligament Reconstruction
Lansdown DA, Shaw J, Allen CR, Ma CB. Osteonecrosis of the Knee After Anterior Cruciate Ligament Reconstruction. Orthopaedic Journal Of Sports Medicine 2015, 3: 2325967115576120. PMID: 26665035, PMCID: PMC4622362, DOI: 10.1177/2325967115576120.Peer-Reviewed Original ResearchAnterior cruciate ligament reconstructionCruciate ligament reconstructionACL reconstructionLigament reconstructionRetrospective chart reviewAdditional surgical proceduresArthroscopic ACL reconstructionClear risk factorsDiagnosis of osteonecrosisDevelopment of osteonecrosisLevel of evidenceLateral femoral condyleChart reviewClinical characteristicsSurgical factorsCase seriesDevastating conditionRisk factorsPathologic changesSurgical proceduresOsteonecrosisLower riskFemoral condyleCondyle changesComplications
2014
A comprehensive in vivo kinematic, quantitative MRI and functional evaluation following ACL reconstruction — A comparison between mini-two incision and anteromedial portal femoral tunnel drilling
Lansdown DA, Allen C, Zaid M, Wu S, Subburaj K, Souza R, Feeley BT, Li X, Ma CB. A comprehensive in vivo kinematic, quantitative MRI and functional evaluation following ACL reconstruction — A comparison between mini-two incision and anteromedial portal femoral tunnel drilling. The Knee 2014, 22: 547-553. PMID: 25982298, PMCID: PMC4472567, DOI: 10.1016/j.knee.2014.12.005.Peer-Reviewed Original ResearchConceptsAnteromedial portal techniqueACL reconstructionFemoral tunnel drillingMT groupContralateral kneeNormal kneesEarly cartilage degenerationKnee kinematicsCartilage degenerationMarx Activity Rating ScaleTunnel drillingAM groupCentral medial tibiaKOOS symptom scoresPatient's contralateral kneeSignificant early differencesAnatomic ACL reconstructionActivity Rating ScaleNormal knee kinematicsKOOS surveysSymptom scoresFemoral tunnelControl subjectsTibial positionPortal technique
2013
Differences in Mechanisms of Failure, Intraoperative Findings, and Surgical Characteristics Between Single- and Multiple-Revision ACL Reconstructions
Chen JL, Allen CR, Stephens TE, Haas AK, Huston LJ, Wright RW, Feeley BT, Albright J, Amendola A, Anderson A, Andrish J, Annunziata C, Arciero R, Bach B, Baker C, Bartolozzi A, Baumgarten K, Bechler J, Berg J, Bernas G, Brockmeier S, Brophy R, Bush-Joseph C, Butler J, Campbell J, Carey J, Carpenter J, Cole B, Cooper D, Cooper J, Cox C, Creighton R, Dahm D, David T, DeBerardino T, Dunn W, Flanigan D, Frederick R, Ganley T, Gatt C, Gecha S, Giffin J, Hame S, Hannafin J, Harner C, Harris N, Hechtman K, Hershman E, Hoellrich R, Hosea T, Johnson D, Johnson T, Jones M, Kaeding C, Kamath G, Klootwyk T, Lantz B, Levy B, Ma C, Maiers G, Mann B, Marx R, Matava M, Mathien G, McAllister D, McCarty E, McCormack R, Miller B, Nissen C, O’Neill D, Owens M, Parker R, Purnell M, Ramappa A, Rauh M, Rettig A, Sekiya J, Shea K, Sherman O, Slauterbeck J, Smith M, Spang J, Spindler K, Stuart M, Svoboda L, Taft T, Tenuta C, Tingstad E, Vidal A, Viskontas D, White R, Williams J, Wolcott M, Wolf B, York J. Differences in Mechanisms of Failure, Intraoperative Findings, and Surgical Characteristics Between Single- and Multiple-Revision ACL Reconstructions. The American Journal Of Sports Medicine 2013, 41: 1571-1578. PMID: 23698386, PMCID: PMC3839418, DOI: 10.1177/0363546513487980.Peer-Reviewed Original ResearchConceptsMarx activity levelACL reconstructionChondral injuriesRecurrent injuryPatellofemoral compartmentCommon causeActivity levelsAnterior cruciate ligament reconstructionACL graft injuryCruciate ligament reconstructionPrimary outcome variableCase-control studyGradual-onset injuriesLevel of evidenceFirst-time revisionsGraft injuryAssociated injuriesSurgical characteristicsIntraoperative findingsLigament reconstructionPrimary revisionGraft selectionGraft typeMeniscal injurySudden onset
2011
Patients' attitudes and factors in their selection of grafts for anterior cruciate ligament reconstruction
Cheung SC, Allen CR, Gallo RA, Benjamin C, Feeley BT. Patients' attitudes and factors in their selection of grafts for anterior cruciate ligament reconstruction. The Knee 2011, 19: 49-54. PMID: 21211979, DOI: 10.1016/j.knee.2010.11.009.Peer-Reviewed Original ResearchMeSH KeywordsAdultAnterior Cruciate LigamentAnterior Cruciate Ligament InjuriesAttitude of Health PersonnelChoice BehaviorFemaleHumansKnee InjuriesMalePatient Acceptance of Health CarePhysician's RolePlastic Surgery ProceduresProstheses and ImplantsRetrospective StudiesTransplantation, AutologousTransplantation, HomologousConceptsGraft choiceSurgeon recommendationACL reconstructionAnterior cruciate ligament reconstructionCruciate ligament reconstructionHalf of patientsSelection of graftsDonor site morbidityMean followOlder patientsLigament reconstructionMedical websitesPatients' attitudesPatientsSite morbidityDifferent graftsGraftAllograftsDemographic factorsLikert scaleUrban settingsHigh levelsMorbidityFactorsRecommendations
2010
Descriptive Epidemiology of the Multicenter ACL Revision Study (MARS) Cohort
Wright R, Huston L, Spindler K, Dunn W, Haas A, Allen C, Cooper D, DeBerardino T, Lantz B, Mann B, Stuart M. Descriptive Epidemiology of the Multicenter ACL Revision Study (MARS) Cohort. The American Journal Of Sports Medicine 2010, 38: 1979-1986. PMID: 20889962, PMCID: PMC3655411, DOI: 10.1177/0363546510378645.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAnterior Cruciate LigamentAnterior Cruciate Ligament InjuriesCanadaChildCohort StudiesCross-Sectional StudiesFemaleHumansKnee InjuriesMaleMiddle AgedMultivariate AnalysisOrthopedic ProceduresOutcome Assessment, Health CareProspective StudiesReoperationSports MedicineSurveys and QuestionnairesTreatment FailureUnited StatesYoung AdultConceptsRevision ACL reconstructionPatient demographicsACL reconstructionGraft choiceWorse outcomesRevision anterior cruciate ligament reconstructionMulticenter prospective longitudinal studyAnterior cruciate ligament reconstructionPatient-based outcome measuresConcomitant knee injuriesCruciate ligament reconstructionInstitutional review board approvalIntra-articular injuriesTime of injuryCross-sectional studyLevel of evidenceProspective longitudinal studyReview board approvalACL reconstruction methodsReconstruction cohortTraumatic reinjuriesPrevious graftProspective cohortClinical featuresClinical outcomes
2009
Anterior Cruciate Ligament Graft Reconstruction
Giaconi JC, Allen CR, Steinbach LS. Anterior Cruciate Ligament Graft Reconstruction. Topics In Magnetic Resonance Imaging 2009, 20: 129-150. PMID: 20410802, DOI: 10.1097/rmr.0b013e3181d657a7.Peer-Reviewed Original ResearchConceptsAnterior cruciate ligamentACL reconstructionGraft reconstructionAnterior cruciate ligament reconstructionACL graft reconstructionPhyseal-sparing techniquesCruciate ligament reconstructionDaily clinical practiceMagnetic resonance imagingGraft laxityGraft tearLigament reconstructionACL graftCruciate ligamentClinical practiceSelective bundleResonance imagingDouble bundleConsulting radiologistLigamentSingle bundleCommon occurrenceArthrofibrosisComplicationsHardware failure
2003
Revision anterior cruciate ligament reconstruction
Allen CR, Giffin JR, Harner CD. Revision anterior cruciate ligament reconstruction. Orthopedic Clinics Of North America 2003, 34: 79-98. PMID: 12735203, DOI: 10.1016/s0030-5898(02)00066-4.Peer-Reviewed Original ResearchConceptsRevision ACL surgeryACL surgeryACL reconstructionPatient expectationsRevision anterior cruciate ligament reconstructionSuccessful revision ACL surgeryAnterior cruciate ligament reconstructionGraft material selectionInitial ACL reconstructionCruciate ligament reconstructionPostoperative rehabilitation protocolThorough preoperative evaluationRevision ACL reconstructionAppropriate patient expectationsSymptoms of instabilityConcomitant surgeryAnterior laxityGraft removalPreoperative evaluationLigament reconstructionPatient functionSurgical outcomesHardware removalPhysical examinationRadiographic evaluation
1999
Injury and reconstruction of the anterior cruciate ligament and knee osteoarthritis
Allen C, Livesay G, Wong E, Woo S. Injury and reconstruction of the anterior cruciate ligament and knee osteoarthritis. Osteoarthritis And Cartilage 1999, 7: 110-121. PMID: 10367019, DOI: 10.1053/joca.1998.0166.Peer-Reviewed Original ResearchConceptsAnterior cruciate ligamentSitu forcesBasic mechanical propertiesRobotic/UFS testing systemKnee kinematicsACL reconstructionTesting systemKnee osteoarthritisACL graftCruciate ligamentUniversal force-moment sensor testing systemNon-contact mannerCadaveric kneesMechanical propertiesLoading conditionsViscoelastic characteristicsAnterior tibial loadMuscle loading conditionsFreedom knee kinematicsHuman cadaveric kneesQuadruple semitendinosusGraft functionPL bundleAM bundleGraft forces