2022
Peritalar Kinematics Restored with Combined Subtalar Fusion and Medial Ligament Reconstruction in a Simulated Advance Progressive Collapsing Flatfoot Deformity Model
Tecle N, Oh I, Gira E, Awad H. Peritalar Kinematics Restored with Combined Subtalar Fusion and Medial Ligament Reconstruction in a Simulated Advance Progressive Collapsing Flatfoot Deformity Model. Foot & Ankle Orthopaedics 2022, 7: 2473011421s00470. PMCID: PMC8793585, DOI: 10.1177/2473011421s00470.Peer-Reviewed Original ResearchMedializing calcaneal osteotomySubtalar fusionLigament reconstructionValgus angleSevere flatfoot modelHeel alignmentFlatfoot modelMeary's angleCoronal angleMedial ankle ligamentsMedial ligament reconstructionSequential surgical proceduresMultiple comparison testCadaveric foot specimensTibiotalar osteoarthritisTibiotalar angleMedial archValgus alignmentTibiotalar jointFlatfoot deformityHindfoot alignmentAnkle ligamentsSurgical proceduresCalcaneal osteotomyMedial stability
2020
Peritalar Kinematics With Combined Deltoid-Spring Ligament Reconstruction in Simulated Advanced Adult Acquired Flatfoot Deformity
MacDonald A, Ciufo D, Vess E, Knapp E, Awad HA, Ketz JP, Flemister AS, Oh I. Peritalar Kinematics With Combined Deltoid-Spring Ligament Reconstruction in Simulated Advanced Adult Acquired Flatfoot Deformity. Foot & Ankle International 2020, 41: 1149-1157. PMID: 32495639, DOI: 10.1177/1071100720929004.Peer-Reviewed Original ResearchConceptsSpring ligament tearsLigament reconstructionDeltoid ligament reconstructionLigament tearsTibiotalar jointFlatfoot deformityPeritalar stabilityFlatfoot modelTibiocalcaneonavicular ligamentAdult Acquired Flatfoot DeformityRecent anatomic studiesAcquired Flatfoot DeformityCadaveric flatfoot modelCadaveric foot specimensPeritalar jointsProgressive deformityValgus deformityMedial ligamentValgus alignmentSubtalar jointValgus angleDeltoid ligamentSevere modelMedial stabilityAnatomic studyRadiographic Outcomes after Flexible Flatfoot Reconstruction with and without Spring Ligament Reconstruction
Kohring J, MacDonald A, Karnyski S, Oh I, Baumhauer J, Ketz J, Flemister A. Radiographic Outcomes after Flexible Flatfoot Reconstruction with and without Spring Ligament Reconstruction. Foot & Ankle Orthopaedics 2020, 5: 2473011420s00008. PMCID: PMC8697192, DOI: 10.1177/2473011420s00008.Peer-Reviewed Original ResearchTalonavicular uncoverage angleSpring ligament repairSpring ligament reconstructionStage II AAFDRadiographic outcomesFlatfoot reconstructionLigament reconstructionCalcaneal pitchMeary's angleLigament repairSuture repairTibiotalar tiltRadiographic measurementsMetatarsal angleSuture deviceStage II adultTalar-first metatarsal anglePreoperative radiographic measurementsPostoperative radiographic outcomesRadiographic differencesFlatfoot deformityInclusion criteriaRepair groupSpring ligamentPatients
2019
Deltoid-Spring Ligament Reconstruction in Adult Acquired Flatfoot Deformity With Medial Peritalar Instability
Brodell JD, MacDonald A, Perkins JA, Deland JT, Oh I. Deltoid-Spring Ligament Reconstruction in Adult Acquired Flatfoot Deformity With Medial Peritalar Instability. Foot & Ankle International 2019, 40: 753-761. PMID: 30902021, DOI: 10.1177/1071100719839176.Peer-Reviewed Original ResearchConceptsPROMIS Pain InterferenceSpring ligament tearsPhysical functionPeritalar instabilityRadiographic outcomesLigament reconstructionLigament tearsOsseous correctionFlatfoot deformityPeritalar stabilitySF-36 physical functionTibiocalcaneonavicular ligamentTalo-first metatarsal angleAdult Acquired Flatfoot DeformityPostoperative weightbearing radiographsPostoperative clinical outcomesPROMIS Physical FunctionAnkle Ability MeasureRetrospective case seriesOutcomes Measurement Information SystemViable surgical optionCalcaneal pitch angleTalonavicular coverage angleAcquired Flatfoot DeformityMeasurement Information SystemEvaluation and Treatment of Posterior Tibialis Tendon Insufficiency in the Elderly Patients
Ikpeze TC, Brodell JD, Chen RE, Oh I. Evaluation and Treatment of Posterior Tibialis Tendon Insufficiency in the Elderly Patients. Geriatric Orthopaedic Surgery & Rehabilitation 2019, 10: 2151459318821461. PMID: 30719400, PMCID: PMC6348568, DOI: 10.1177/2151459318821461.Peer-Reviewed Original ResearchTendon insufficiencyElderly patientsGeriatric patientsGeriatric populationNon-steroidal anti-inflammatory medicationsAnti-inflammatory medicationsPosterior tibialis tendonTotal ankle arthroplastySecond-stage diseasePaucity of literatureNormal gait biomechanicsAdvanced treatment approachesStage diseaseConservative treatmentRadiographic outcomesSurgical repairHindfoot fusionTendon transferAnkle arthroplastySevere manifestationsTibialis tendonIdeal treatmentCommon causeFlatfoot deformityDegenerative changes
2018
Spring ligament tear decreases static stability of the ankle joint
Kelly M, Masqoodi N, Vasconcellos D, Fowler X, Osman WS, Elfar JC, Olles MW, Ketz JP, Flemister AS, Oh I. Spring ligament tear decreases static stability of the ankle joint. Clinical Biomechanics 2018, 61: 79-83. PMID: 30529505, DOI: 10.1016/j.clinbiomech.2018.11.011.Peer-Reviewed Original ResearchConceptsJoint reactive forcesSpring ligament injurySpring ligament tearsLigament injuryLigament tearsInjury modelTalonavicular jointInjury statesCadaveric lower legsLigament reconstructionHuman cadaveric lower legsNon-invasive methodFlatfoot deformityDeltoid ligamentSpring ligamentLower legJoint stabilityAnkle jointKnee jointBiomechanical studyLigamentLimbSignificant increaseInjuryAdvanced adultTibiocalcaneonavicular Ligament Reconstruction in Simulated Flatfoot Deformity with Medial Ligament Insufficiency
MacDonald A, Ciufo D, Knapp E, Awad H, Ketz J, Flemister A, Deland J, Oh I. Tibiocalcaneonavicular Ligament Reconstruction in Simulated Flatfoot Deformity with Medial Ligament Insufficiency. Foot & Ankle Orthopaedics 2018, 3: 2473011418s00327. DOI: 10.1177/2473011418s00327.Peer-Reviewed Original ResearchSpring ligament tearsLigament reconstructionLigament tearsHindfoot valgusFlatfoot deformityMedial stabilitySpring ligamentPeritalar jointsFlatfoot modelPercent correctionMedial ligamentSubtalar jointReconstruction typeAbduction angleAchilles tendon loadDeltoid ligament reconstructionPeroneus longus tendonSpring ligament reconstructionCadaveric flatfoot modelCadaveric foot specimensSignificant improvementTendon allograftTendon transferLigament insufficiencyLongus tendonDeltoid-Spring Ligament Reconstruction in Stage IIB Adult Acquired Flatfoot Deformity with Spring Ligament Tear
Oh I, MacDonald A, Ikepeze T, Deland J. Deltoid-Spring Ligament Reconstruction in Stage IIB Adult Acquired Flatfoot Deformity with Spring Ligament Tear. Foot & Ankle Orthopaedics 2018, 3: 2473011418s00372. DOI: 10.1177/2473011418s00372.Peer-Reviewed Original ResearchAdult Acquired Flatfoot DeformitySpring ligament tearsSF-36 physical functionLigament tearsPhysical functionAcquired Flatfoot DeformityOsseous correctionRadiographic outcomesFlatfoot deformityOutcomes Measurement Information System Physical FunctionShort-term clinical investigationsViable surgical treatment optionPeritalar stabilityPost-operative clinical outcomesTibiocalcaneonavicular ligamentTalo-first metatarsal anglePROMIS Physical FunctionSurgical treatment optionsCalcaneal pitch anglePain interference domainTalonavicular coverage angleAP talo-first metatarsal anglePrevious anatomic studiesGastrocnemius recessionLigament reconstruction
2017
Clinical Utilization of Patient Reported Outcome (PROMIS) Scores for Surgical Reconstruction of Posterior Tibialis Tendon Dysfunction
Anderson M, Houck J, Flemister A, Baumhauer J, Ketz J, DiGiovanni B, Ciufo D, Oh I. Clinical Utilization of Patient Reported Outcome (PROMIS) Scores for Surgical Reconstruction of Posterior Tibialis Tendon Dysfunction. Foot & Ankle Orthopaedics 2017, 2: 2473011417s000020. DOI: 10.1177/2473011417s000020.Peer-Reviewed Original ResearchPosterior tibialis tendon dysfunctionPost-surgical improvementPROMIS scalesPost-operative changesPain interferencePhysical functionPROMIS scoresAnkle surgeryClinical variablesPre-operative decision makingRadiographic measurementsPROMIS Physical FunctionReceiver operator curve analysisTertiary care centerCommon surgical problemOperator curve analysisICD-9/10Tendon dysfunctionAdult patientsPreoperative patientsRadiographic variablesCare centerSurgical problemsFlatfoot deformitySurgical reconstruction
2016
Spring Ligament Tear Decreases the Ankle and Talonavicular Joint Reaction Forces
Oh I, Kelly M, Maqsoodi N, Vasconcellos D, Osman W, Fowler X, Elfar J, Olles M. Spring Ligament Tear Decreases the Ankle and Talonavicular Joint Reaction Forces. Foot & Ankle Orthopaedics 2016, 1: 2473011416s00072. DOI: 10.1177/2473011416s00072.Peer-Reviewed Original ResearchSpring ligament tearsLigament reconstructionLigament tearsTalonavicular jointInjury modelJoint reaction forcesTibiocalcaneonavicular ligamentBiomechanical studyMedial ankle instabilityAdjacent soft tissuesSpring ligament reconstructionPrevious anatomic studiesCadaveric lower legsFirst biomechanical studyClinical efficacyHuman cadaveric lower legsValgus deformitySemitendinosus allograftDistal tibiaFlatfoot deformityDeltoid ligamentAnkle instabilityNavicular tuberosityAnatomic studyLower legReconstruction of the Deltoid-Spring Ligament
Grunfeld R, Oh I, Flemister S, Ketz J. Reconstruction of the Deltoid-Spring Ligament. Techniques In Foot & Ankle Surgery 2016, 15: 39-46. DOI: 10.1097/btf.0000000000000108.Peer-Reviewed Original ResearchSurgical techniqueAnatomic reconstructionAdult-acquired flatfoot deformityPeroneus longus allograftSpring ligament insufficiencyFirst surgical techniqueSpring ligament reconstructionSpring ligament complexLigament reconstructionLigament insufficiencyDeformity patientsLigamentous stabilityFlatfoot deformityDeltoid ligamentSpring ligamentLigament complexTibiocalcaneonavicular ligamentDeltoidLigamentAdequate correctionExpert opinionLevel 5AllograftsPatients
2013
Sensitivity of Plantar Pressure and Talonavicular Alignment to Lateral Column Lengthening in Flatfoot Reconstruction
Oh I, Imhauser C, Choi D, Williams B, Ellis S, Deland J. Sensitivity of Plantar Pressure and Talonavicular Alignment to Lateral Column Lengthening in Flatfoot Reconstruction. Journal Of Bone And Joint Surgery 2013, 95: 1094-1100. PMID: 23783206, PMCID: PMC6948803, DOI: 10.2106/jbjs.k.01032.Peer-Reviewed Original ResearchConceptsLateral aspectPlantar pressureTalonavicular jointLateral columnFlatfoot modelLateral plantar pressureLateral Column LengtheningCadaveric flatfoot modelCadaveric foot specimensPlantar pressure dataAxial loadFlatfoot deformityFlatfoot reconstructionTensile loadAchilles tendonSagittal correctionFlatfoot conditionAbduction angleFoot specimensIntact footContact areaForefootSoft tissueSagittal planeSignificant differences