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Faculty of Health Sciences, Hokkaido University Sapporo, Hokkaido JAPAN Harukazu Tohyama M.D., Ph.D. is currently working as Professor and Director in Department of Rehabilitation Science, Hokkaido University, Faculty of Health Sciences, Sapporo, Japan. He received his M.D. from Hokkaido University School of Medicine. He serves as a team physician for the American Football Team of Hokkaido University and the Hokuren Women's Distance Running Team. He have authored 114 peer-reviewed publications, four review papers and five chapters in English. He was also selected as a traveling scientist of the ACL Study Group at 2008-2010. He is currently an editorial board member of “Arthroscopy.” Dr. Tohyama is also a president of the 14th Annual Meeting of the Japanese Orthopaedic Society of Knee, Arthroscopy and Sports Medicine (JOSKAS), which will be held at Sapporo, Japan in 2022. ISAKOS Active Member
Outcomes of Isolated Medial Patellofemoral Ligament Reconstruction after First-Time and Recurrent Patellar Instability: Recurrence, Return to Sport, And Osteochondral Injury: Data from the JUPITER Cohort Jacqueline M. Brady, MD, UNITED STATESThe Effect of Knee Rotation Angle on Patellofemoral Instability Jeffery D St. Jeor, MD, UNITED STATESHeadless Screw Fixation Lowers Re-Operation Rate Following Tibial Tubercle Osteotomy Seth L. Sherman, MD, UNITED STATESIs Quadricep Tendon A Suitable Graft Option For Medial Patellofemoral Ligament Reconstruction? A Systematic Review And Meta-Analysis. Shahbaz S. Malik, BSc, MB BCh, MSc (Orth Engin), LLM, FRCS (Tr&Orth), UNITED KINGDOMYour Patella Dislocated: Will It Happen Again? An Assessment Of Mri Criteria For Recurrent Patella Dislocation After An Initial Event Mauricio Drummond, Jr., MD, UNITED STATESHigh Success And Low Complication Rates Following Revision Tibial Tubercle Osteotomy Nathan Varady, MD, MBA, UNITED STATESIncidence Of False Positives Pathological Patellar Tilt Angle due to Knee Internal Torsion Ricardo D. Manilov, MD, ARGENTINAUtility of 3D biomodels in the surgical planning of femoral derotational osteotomies Caterina Chiappe , MD, SPAINGrading Severity in Trochlear Dysplasia: a Pilot Study Juan Pablo Martinez-Cano, MD, MSc, PhD, COLOMBIARadiographic Landmarks Of Medial Patellofemoral Ligament Reconstruction: A Systematic Review And Meta-Analysis Of Femoral Tunnel Position Larry Chen, BS, UNITED STATESAnalyzing the Alignment Error in Tibial Tuberosity-Trochlear Groove Distance (TT-TG) in Clinical Scans Using 2D and 3D Methods Johannes M. Sieberer, MSc, AUSTRIAIncreased TT-TG and Sulcus Angle are Associated with Patella Osteochondritis Dissecans Daniel W. Green, MD, MS, UNITED STATESOutcomes Of Arthroscopic Patella Realignment In Children And Adolescents With A Minimum 2-Year Follow Up Serafina Faith Zotter, BS, UNITED STATESEfficacy of Single Intra-Articular 2% Sodium Hyaluronate Versus Corticosteroid Injection in Isolated Patellofemoral Osteoarthritis: A Double-Blind, Randomized Controlled Trial Pratchaya Manop, MD, THAILANDInitial Results from the Creation of a Normative Database for the Banff Patellar Instability Instrument Mark Lafave, PhD, CAT(C), CANADAStraight Anteriorization Tibial Tubercle Osteotomy Is Safe and Effective for Patellofemoral Cartilage Lesions Nathan Varady, MD, MBA, UNITED STATESRisk Factors For Patellofemoral Cartilage Lesions In Patients With Trochlear Dysplasia In The Setting Of Patellar Instability Berfin Caliskan, SWITZERLANDIs it correct to perform lateral release in combination with MPFL reconstruction in patients with acute patellar dislocation? A finite element analysis study Giuseppe Salvatore, MD, PhD, ITALYFrom Clinic To Smartphone: A Randomized Controlled Trial Of A Novel Digital Therapeutic For Patellofemoral Pain Integrating Exercise And Cognitive-Behavioral Therapy Jae-Young Park, MD, KOREA, REPUBLIC OFNew Sagittal Measurements To Distinguish Between Patellar Instability And Control Patients Marc Tompkins, MD, UNITED STATESThe length of the popliteus on sagittal views correlates with high tibiofemoral rotations and patellar instability Shelby T Desroches, MS, UNITED STATESThere is a Difference in Preoperative Through-the-Knee Femorotibial Rotation in Pediatric Patients with Anterior Cruciate Ligament Rupture Versus Patients with Patellofemoral Instability Daniel W. Green, MD, MS, UNITED STATESReporting Bias is Highly Prevalent in Systematic Reviews and Meta-Analyses of Medial Patellofemoral Ligament Reconstruction Mary K. Mulcahey, MD, UNITED STATESHow Should I Measure Proximal Femoral Version In Torsional Deformity? A New, Easy And Reproducible Measurement Method Using Maximum Intensity Projection (Mip) Imaging On Ct Scan. Federica Rosso, MD, ITALYSulcus-Deepening Trochleoplasty With A Dedicated Cutting Guide For Patellar Instability And High-Grade Trochlear Dysplasia: Analysis Of Cartilage Integrity And Functional Outcomes At 3 To 10 Years Robin Martin, MD, SWITZERLANDTorsional Limb Deformities In Patients With Lateral Patellar Dislocation: An Expert Survey Of The International Patellofemoral Study Group. Guido Wierer, MD, AUSTRIATT-TG Ratio Provides a More Accurate Estimation of the Amount of Tibial Tubercle Medialization Needed in Patellofemoral Instability Tomas Pineda, MD, CHILEIsolated Medial Patellofemoral Ligament Reconstruction for Recurrent Patellar Instability Regardless of Tibial Tubercle-Trochlear Groove Distance and Patellar Height: Differential Outcomes for Chondral Defects Elizabeth Rose Dennis, MD MS, UNITED STATESAn Oblique Transposition Quadricepsplasty Provides Excellent Outcomes For The Treatment Of Type Iv (Obligatory, Flexion-Range) Patellar Dislocation Philip Wilson, MD, UNITED STATESThe Interaction of Race and Socioeconomic Deprivation in Treatment of Patellofemoral Instability: Data from the JUPITER Cohort Jacqueline M. Brady, MD, UNITED STATESInfluence of tibial tuberosity movement direction on postoperative outcomes of combined Maquet procedure and autologous cartilage implantation for patellofemoral cartilage injury Junya Tsukisaka , MD, JAPANResults Of Mpfl Reconstruction Using Soft Tissue Fixation Technique Associated With A Procedure On The Att For Patellar Instability : An Average Follow-Up Of 8.8 Years Marine Aubey, Student, FRANCEReturn to Sports is Faster with Combined Reconstruction of the MPFL and MQTFL Compared to Isolated MPFL Reconstruction: Preliminary Results Luís Duarte Silva, MD, PORTUGAL3D-Pass (3D Patellar Instability Anatomical Severity Score): A Novel Metric Using Machine Learning To Predict Treatment Outcome In Patella Instability Seth L. Sherman, MD, UNITED STATESFactors Associated with the Decision to Perform a Lateral Retinacular Release or Lengthening During Medial Patellofemoral Ligament Reconstruction in the JUPITER Cohort Daniel W. Green, MD, MS, UNITED STATESJudet’s extensive quadriceps release and “à la carte” combined procedures for patellar dislocation In flexion Moritz Konkel, MD, SWITZERLANDTibial Tuberosity to Trochlear Groove Distance (TT-TG): A Breakdown into Two Principal Components Johannes M. Sieberer, MSc, AUSTRIAEffect Of Distal Femoral Osteotomy For Valgus Correction On Change In Patellar Height Alexander Golant, MD, UNITED STATESGenetic Evidence Suggests Education Reduces Risk Of Patellar Dislocation: Insights From Mendelian Randomization Chao Zhang, CHINAAnatomical Risk Factors For Patellofemoral Instability Differ Among Patients With Trochlear Dysplasia Depending On Their Dejour Classification Martin Hartmann, MD, SWITZERLANDWeight Matters: The Causal Role Of Birth And Childhood Body Size In Rcurrent Patellar Dislocation Chao Zhang, CHINAClinical Outcomes For MPFL Reconstruction After First-Time Vs. Recurrent Patella Dislocations Serafina Faith Zotter, BS, UNITED STATESCan Patellar Translation As Measured By Dynamic Ultrasound Predict Outcomes After Patellar Stabilization Surgery? Kyle K Grover, BS, UNITED STATESMorphological risk of the femur causing anterior cruciate ligament (ACL) injuries : comparative 3-Dimensional mean model analysis of ACL and non-injured patients So Heun Lee, M.S - Ph.D.student, KOREA, REPUBLIC OFSignificantly Greater Incidence Of Patella Fracture After Medial Patellofemoral Ligament Reconstruction For Patients Age 20 And Under Miho J. Tanaka, MD, PhD, UNITED STATESEcho Assisted Reconstruction Of The Medial Patellofemoral Ligament Alex Dante Antezana Arzabe, Médico, BOLIVIAPartial Lateral Patellar Facetectomy Is Beneficial For Patients With Patellofemoral Osteoarthritis: A Systematic Review and Meta-Analysis Kennan Yeo, MBBS, SINGAPOREPatellar Tendon To Lateral Trochlear Ridge (PT-LTR) as an Indicator of Patellar Instability With Malalignment Brittany Margaret Ammerman, MD, MBS, UNITED STATESCLINICAL AD RADIOLOGICAL OUTCOMES AFTER ISOLATED MEDIAL PATELLOFEMORAL RECONSTRUCTION FOR RECURRENT PATELLAR DISLOCATION WITH COMPLETELY IMPLANT FREE TECHNIQUE AMONG POPULATION OF YOUNG SPORT PATIENTS Matteo Baldassarri, MD, ITALYA Three-Dimensional Anatomical Study Of The Quadriceps Mechanism, Its Association With Femoral Torsion And Their Relationship To Patellofemoral Instability Sheanna T Maine, FRACS, AUSTRALIA3D Curvature Analysis as a Visualization Tool for Trochlea Dysplasia Johannes M. Sieberer, MSc, AUSTRIAHistologic Analysis Of The MPFL And MQTFL Fibers Demonstrate A Single Ligamentous Complex Miho J. Tanaka, MD, PhD, UNITED STATESPredictors of Increased Complication Rate Following Tibial Tubercle Osteotomy (TTO) Alexander Golant, MD, UNITED STATESAdductor Sling Versus Anatomical Technique In Medial Patellofemoral Ligament Reconstruction: A Retrospective Multicenter Study Jose Tomas Arteaga, MD, Knee fellow, CHILEThree-Dimensional CT Bone Model Improves Interobserver Reliability of Trochlea Dysplasia Using the Dejour Classification in Patients with Patellar Dislocation Rika Shigemoto, MD, JAPANClinical And Radiographic Results After Isolated Mpfl Reconstruction For Patella Instability Theodoros Mylonas, MD, MSc, GREECEFEMORAL MALTORSION INFLUENCES BOTH PATELLOFEMORAL AND TIBIOFEMORAL CONTACT PRESSURE. A BIOMECHANICAL EVALUATION Caterina Chiappe , MD, SPAINRadiologic Risk Factors for Osteochondral Fractures in First-Time and Recurrent Patellar Instability Patients Henry B. Ellis, MD, UNITED STATESCurvature Analysis Of The Distal Femur As A Tool To Classify Trochlear Dysplasia Johannes M. Sieberer, MSc, AUSTRIAThe Short-Term Clinical Results of Isolated Medial Patellofemoral Ligament Reconstruction in Patellar Dislocation: Comparing Superficial Quadriceps Tendon and Hamstring Tendon Yuki Suzuki, MD, PhD, JAPANEffects of Fear of Re-Injury, Other Psychological Factors, and Sport Played on Return to Sport Following Operative Treatment for Patellar Instability Mary K. Mulcahey, MD, UNITED STATESAssociation Between Articular Incongruence Post-Trochleoplasty And Long-Term Patellofemoral Osteoarthritis Tomas Pineda, MD, CHILEPure Distalization Tibial Tubercle Osteotomy Does Not Result In Posteriorization Of The Tibial Tubercle Nathan Varady, MD, MBA, UNITED STATESThe Prevalence Of Associated Anatomical Risk Factors For Patellofemoral Joint Pathology In Patients Undergoing Rotational Osteotomy And The Implication For The Level Of Correction. Martyn Snow, FRCS, UNITED KINGDOMSurgical Management of First-Time Patellar Dislocations in Pediatric Patients May Lower Rates of Redislocation Compared to Conservative Management: A Systematic Review and Meta-Analysis Benjamin Blackman, BHSc. (Honors), CANADAComparative Clinical and Radiographic Outcomes of Particulated Juvenile Articular Cartilage Implantation in Shouldered and Unshouldered Patella Cartilage Lesions Brittany Margaret Ammerman, MD, MBS, UNITED STATESHow Much Improvement in Patient-Reported Outcome Measures After Isolated Medial Patellofemoral Ligament Reconstruction is Associated with Surgeon-Defined Satisfactory Outcomes? A Jupiter Study Shital N. Parikh, MD, UNITED STATESCross-Cultural Translation and Validation of The Spanish Version of The Norwich Patellofemoral Instability (NPI) Score Juan Pablo Martinez-Cano, MD, MSc, PhD, COLOMBIAOCCURRENCE OF PATELLOFEMORAL OSTEOARTHRITIS AT MEDIUM AND LONG-TERMS AFTER ISOLATED RECONSTRUCTION OF THE MEDIAL PATELLOFEMORAL LIGAMENT WITH MEDIAL THIRD OF THE PATELLAR TENDON Fabiano Kupczik, MD, PhD, MSc, BRAZILA Prospective Cohort Study Investigating the Safety and Efficacy of Tibial Tubercle Osteotomy Using a Novel Multi-Directional Tibial Tubercle Transfer System Seth L. Sherman, MD, UNITED STATESOutcomes of Skeletally Immature Patients Undergoing Isolated Medial Patellofemoral Ligament Reconstruction: Data from the JUPITER Cohort Lauren H Redler, MD, UNITED STATESTranslation and Validation of The Spanish Version of The Banff Patellofemoral Instability Instrument 2.0 (BPII) Juan Pablo Martinez-Cano, MD, MSc, PhD, COLOMBIAThe Effect Of Tibial Tubercle Osteotomy And Trochleoplasty On Femorotibial Rotation In Patients With Patellar Instability Martin Hartmann, MD, SWITZERLANDAccuracy Of The Patella Alta Assesment Is Poor – Dynamic Vs Static Patellar Height In Relation To Femoral Trochlea Petri J. Sillanpää, MD, PhD, FINLANDQuantitative Assessment of Knee Joint Kinematics In Patients with Recurrent Patellar Dislocation – Using a 3D-3D Surface Registration Technique and 4-D CT Analysis – Kazuya Kaneda, MD, PhD, JAPANMedial PatelloTibial Ligament Reconstruction in Pediatric and Adolescent Patients with Patella Dislocation in Flexion Daniel W. Green, MD, MS, UNITED STATESThe Flexion Angle and the Intra-Articular Version in Different MRI Recording Techniques Influence the Tibial Tuberosity - Trochlea Groove Distance Adrian Deichsel, MD, GERMANYThe Lateral Patellar Retinaculum is Thicker in Pediatric and Adolescent Patients with Patellofemoral Instability Daniel W. Green, MD, MS, UNITED STATESMedial Patellotibial Ligament Reconstruction Obtains A Significant Improvement Of Patellar Stability: Motion Analytic Study Nadhaporn Saengpetch, MD, THAILANDPatellar Dislocation During Examination Under Anesthesia As A Diagnostic Test For Patellar Instability: Data From Jupiter Cohort Shital N. Parikh, MD, UNITED STATESThe Dejour Classification for Trochlear Dysplasia: Are We Speaking the Same Language? Juan Pablo Martinez-Cano, MD, MSc, PhD, COLOMBIAIntra And Inter-Observer Reliability Of The Dh Dejour V2 Classification For Trochlear Dysplasia Using Radiographs Combined With Mri. Michael J. Dan, Mbbs, PhD, MSc(res), FRACS(oath), AUSTRALIA
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Knee Patellofemoral Instability Repair / Reconstruction Osteotomy Dislocation Ligaments Bones Arthritis Osteoarthritis
Support received from NIPRO CORPORATION, JapanEditorial or Governing board of ArthroscopyBoard of Directors member for Japanese Orthopaedic Society of Knee, Arthroscopy and Sports Medicine (JOSKAS)