2016
Characterization of patellar maltracking using dynamic kinematic CT imaging in patients with patellar instability
Tanaka M, Elias J, Williams A, Demehri S, Cosgarea A. Characterization of patellar maltracking using dynamic kinematic CT imaging in patients with patellar instability. Knee Surgery, Sports Traumatology, Arthroscopy 2016, 24: 3634-3641. PMID: 27358051, DOI: 10.1007/s00167-016-4216-9.Peer-Reviewed Original ResearchConceptsPatellar instability symptomsInstability symptomsIncreased lateral translationLateral translationPatellar maltrackingPatellar instabilityKnee flexionPatellar motionBisect offsetActive flexionFlexionPatellofemoral jointIntervals of knee flexionBilateral symptomsKneePatellofemoral instabilityComputed tomographyMaltrackingPatientsCT imagesSymptomsPoor image qualityTrochlear groovePatellaSeverity
2015
The Relationship Between Tibial Tuberosity–Trochlear Groove Distance and Abnormal Patellar Tracking in Patients With Unilateral Patellar Instability
Williams A, Elias J, Tanaka M, Thawait G, Demehri S, Carrino J, Cosgarea A. The Relationship Between Tibial Tuberosity–Trochlear Groove Distance and Abnormal Patellar Tracking in Patients With Unilateral Patellar Instability. Arthroscopy The Journal Of Arthroscopic And Related Surgery 2015, 32: 55-61. PMID: 26440373, DOI: 10.1016/j.arthro.2015.06.037.Peer-Reviewed Original ResearchConceptsTibial tuberosity-trochlear groove distanceTibial tuberosity-trochlear grooveDynamic computed tomography scanLateral patellar tiltBisect offsetPatellofemoral instabilityAsymptomatic kneesContralateral asymptomatic kneesAbnormal patellar trackingScans of patientsActive knee extensionTertiary care hospitalPatellar trackingKnee extensionTomography scanLevel IVMaximum flexionInstability episodesPatellofemoral kinematicsPatellar instabilitySymptomatic kneePatellar tiltDiagnostic studiesPatientsCare hospitalCorrelation Between Changes in Tibial Tuberosity–Trochlear Groove Distance and Patellar Position During Active Knee Extension on Dynamic Kinematic Computed Tomographic Imaging
Tanaka M, Elias J, Williams A, Carrino J, Cosgarea A. Correlation Between Changes in Tibial Tuberosity–Trochlear Groove Distance and Patellar Position During Active Knee Extension on Dynamic Kinematic Computed Tomographic Imaging. Arthroscopy The Journal Of Arthroscopic And Related Surgery 2015, 31: 1748-1755. PMID: 25940399, DOI: 10.1016/j.arthro.2015.03.015.Peer-Reviewed Original ResearchConceptsKnee flexion angleKnee flexionFlexion angleTibial tuberosity-trochlear groove distancePatellar positionTibial tuberosity-trochlear grooveActive knee extensionPatellar tiltRepeated-measures analysisKnee extensionPatellar instabilityLinear regression modelsBisect offsetFlexionRepeated-measuresPrognostic case seriesSymptomatic patellar instabilitySymptomatic kneeTTTG distanceKneePatellar trackingLevel IVRegression modelsPatellofemoral instabilitySymptomatic instabilityCharacterizing Patterns In Patellar Maltracking On Dynamic Kinematic CT Imaging
Tanaka M, Williams A, Elias J, Demehri S, Cosgarea A. Characterizing Patterns In Patellar Maltracking On Dynamic Kinematic CT Imaging. Orthopaedic Journal Of Sports Medicine 2015, 3: 2325967115s00014. PMCID: PMC4901560, DOI: 10.1177/2325967115s00014.Peer-Reviewed Original ResearchBisect offsetSymptomatic patellar instabilityStatic radiographic measurementsPatellar maltrackingPatellar instabilityJ-signLateral translationKnee flexionPatellar motionIncreased lateral translationGrade 1Chi-square analysisAssessment of malalignmentSymptoms of patellar instabilityFlexion/extension cyclesPatellofemoral jointKneeRadiographic measurementsSurgical stabilizationPatellar lateralizationFlexionRatio of patientsIntervals of knee flexionStatistically significant differenceMaltracking
2014
Imaging characteristics of contralateral asymptomatic patellofemoral joints in patients with unilateral instability.
Demehri S, Thawait G, Williams A, Kompel A, Elias J, Carrino J, Cosgarea A. Imaging characteristics of contralateral asymptomatic patellofemoral joints in patients with unilateral instability. Radiology 2014, 273: 821-30. PMID: 25153158, DOI: 10.1148/radiol.14140295.Peer-Reviewed Original ResearchConceptsContralateral asymptomatic jointsFour-dimensional CTTibial tuberosity-trochlear groovePatellofemoral instabilityPatellar height ratioAsymptomatic jointsOA osteoarthritisComputed tomographyTT-TGAbnormal morphologyWilcoxon rank sum testRank sum testInstitutional review boardPatellar lateral displacementMultidetector CTRadiological recordsTrochlear groove depthImaging features of osteoarthritisBisect offsetYounger patientsImage featuresPatientsUnilateral instabilityControl groupCT data