Faculty Information - ITOU Jiyun'ya

（Last updated : 2026-10-02 14:19:28）

ITOU Jiyun'ya
Department School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine Department of Orthopaedic Surgery

Position Assistant Professor

■ Published papers

1.	Original article	Radiolucent lines after robotic-assisted surface-matching kinematically aligned UKA: short-term incidence and lack of association with tibial alignment. 2026/05
2.	Original article	Autologous protein solution injections in end-stage hip and knee osteoarthritis: comparison of rates of conversion to arthroplasty 2026/03/26
3.	Original article	Transverse incisions improve scar outcomes in anterolateral supine approach total hip arthroplasty: a patient observer scar assessment scale-based study. 2026/01
4.	Original article	Proximal tibia bone mineral density correlates more closely with hip density in men with knee osteoarthritis 2025/06/22
5.	Original article	The CPAK classification in three-dimensional measurements is consistent with those in two-dimensional measurements. 2025/02
6.	Original article	Saddle-shaped rotating knee prosthesis outperforms low contact stress knee: A short-term retrospective comparative study 2024/12/02
7.	Original article	Medial degenerative disease of the knee without radiographic osteoarthritis is a good indication for medial open wedge high tibial osteotomy. 2024/12
8.	Original article	Saddle-shaped rotating knee prosthesis outperforms low contact stress knee: A short-term retrospective comparative study. 2024/10
9.	Original article	Large angular correction of arithmetic coronal alignment is associated with residual lateral laxity after total knee arthroplasty in varus knees for Japanese patients 2024/08/13
10.	Original article	Impact of support instruments in medial closed-wedge distal femoral osteotomy: a finite element analysis. 2024/03
11.	Original article	Estimation Failure Risk by 0.5-mm Differences in Autologous Hamstring Graft Diameter in Anterior Cruciate Ligament Reconstruction: A Meta-analysis. 2024/02
12.	Original article	Favorable clinical outcomes of simultaneous ACL reconstruction and UKA or HTO: A systematic surveillance 2023/12/01
13.	Original article	Lateral joint tightness in flexion following cementless mobile-bearing total knee arthroplasty decreases patient-reported outcome measures and postoperative range of motion. 2023/10
14.	Original article	Open-wedge high tibial osteotomy with a slight valgus correction from neutral limb alignment achieves clinical improvements comparable with those for knees with varus deformity. 2023/07
15.	Original article	Open-wedge high tibial osteotomy with a slight valgus correction from neutral limb alignment achieves clinical improvements comparable with those for knees with varus deformity. 2023/07
16.	Original article	Lateral joint tightness in flexion following cementless mobile-bearing total knee arthroplasty decreases patient-reported outcome measures and postoperative range of motion. 2023/06
17.	Original article	Robotic-assisted total knee arthroplasty is not associated with increased risk of postoperative deep vein thrombosis. 2023/06
18.	Original article	Robotic-assisted total knee arthroplasty is not associated with increased risk of postoperative deep vein thrombosis. 2023/06
19.	Original article	A survey on the usage of decellularized tissues in orthopaedic clinical trials. 2023/03
20.	Original article	AP3×ML3 reduction quality classification for femoral trochanteric fractures: validation for reliability focusing on positive medial cortical support. 2023/01
21.	Original article	AP3×ML3 reduction quality classification for femoral trochanteric fractures: validation for reliability focusing on positive medial cortical support. 2023/01
22.	Original article	Incidence and Distribution of Deep Vein Thrombosis Following Total Hip Arthroplasty Using an Anterolateral Supine Approach. 2023
23.	Original article	High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes. 2022/07
24.	Original article	High tibial osteotomy for medial meniscus posterior root tears in knees with moderate varus alignment can achieve favorable clinical outcomes. 2022/07
25.	Original article	Effect of bone morphology of the tibia plateau on joint line convergence angle in medial open wedge high tibial osteotomy 2022/06/13
26.	Original article	Effect of bone morphology of the tibia plateau on joint line convergence angle in medial open wedge high tibial osteotomy. 2022/06
27.	Case report	Tibial shaft fracture after medial open-wedge distal tibial tuberosity osteotomy: A case report. 2022/04
28.	Original article	Perioperative varus alignment does not affect short-term patient-reported outcome measures following mobile-bearing unicompartmental knee arthroplasty. 2022/02
29.	Original article	Correlation of patient-reported numbness around surgical scars with patient-reported outcome measures and joint awareness after knee replacement: a cohort study. 2022/01
30.	Original article	No difference in the incidence or location of deep venous thrombosis according to use of pharmacological prophylaxis following total knee arthroplasty 2021/09/23
31.	Original article	Anterior prominence of the femoral condyle varies among prosthesis designs and surgical techniques in total knee arthroplasty 2021/09/12
32.	Original article	Good Validity and High Internal Consistency of the Forgotten Joint Score-12 in Patients After Medial Opening Wedge High Tibial Osteotomy. 2021/08
33.	Original article	Prevention of venous thromboembolism for osteotomy around the knee 2021/06/01
34.	Original article	Assessing compliance with the use of low-intensity pulsed ultrasound for high tibial osteotomy 2021/04
35.	Original article	Effect of osteoarthritis severity on survival and clinical outcomes after high tibial osteotomy. 2021/03
36.	Original article	Monocortical fixation for locking plate distal screws does not impair mechanical properties in open-wedge high tibial osteotomy 2021/02/08
37.	Original article	Assessing the validity of a new prediction model for patient satisfaction after total knee arthroplasty: A retrospective cross-sectional study 2020/09/09
38.	Original article	Deep peroneal nerve has a potential risk of injury during open-wedge high tibial osteotomy. 2020/05
39.	Review article	Tibial condylar valgus osteotomy - indications and technique. 2020/05
40.	Original article	Significance of soluble fibrin monomer complex measurement predicting DVT after total knee arthroplasty 2020/02
41.	Original article	Treatment report for hip fractures in our institute 2020/01
42.	Case report	Deep peroneal nerve injury during plate fixation for medial open-wedge high tibial osteotomy: A case report and cadaveric study. 2019/11
43.	Original article	Treatment of Capitellum Fracture with Chronic Radial Head Dislocation. 2019/06
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■ Academic conference presentation

1.	Evaluation of Accuracy and Efficacy of Inverted V-Shaped High Tibial Osteotomy Using the Wedge-Shaped Bone Saw Blade (MK Wedge Blade) （ポスター掲示，一般） 2026/09/30
2.	First-in-Human Safety Evaluation of ACL Reconstruction Using Decellularized Bovine Tendon: Initial 5 Cases （ポスター掲示，一般） 2026/05/20
3.	Comparison of Temporal Changes in Joint Awareness After Unicompartmental Knee Arthroplasty and Open-Wedge High Tibial Osteotomy （口頭，一般） 2026/01/31
4.	A novel ACL Reconstruction Using Tissue-Regenerative Ligament (Decellularized Bovine Tendon) （口頭，シンポジウム・ワークショップパネル（指名）） 2025/10/16
5.	Cellularization and Remodeling of Novel Decellularized Bovine Tendon Graft in Ovine ACL Reconstruction Model （ポスター掲示，一般） 2025/06/12
6.	ESTIMATION FAILURE RISK BY 0.5-MM DIFFERENCES IN AUTOLOGOUS HAMSTRING GRAFT DIAMETER IN ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION: A META ANALYSIS （ポスター掲示，一般） 2025/06/12
7.	Novel Safety Device Eliminates Neurovascular Injury In Medial-opening Wedge High Tibial Osteotomy （ポスター掲示，一般） 2025/06/11
8.	Novel Safety Device Eliminates Neurovascular Injury In Medial-opening Wedge High Tibial Osteotomy （ポスター掲示，一般） 2025/06/10
9.	Cellularization and Remodeling of Novel Decellularized Bovine Tendon Graft in Ovine ACL Reconstruction Model （口頭，一般） 2025/06/08
10.	Novel Safety Device Eliminates Neurovascular Injury In Medial-opening Wedge High Tibial Osteotomy （ポスター掲示，一般） 2025/02/08
11.	Comparison of clinical outcomes between interlocking high-tibial osteotomy and medial opening-wedge high-tibial osteotomy, and investigation of factors influencing the outcomes （口頭，一般） 2024/12/06
12.	The Utility of the Wedge-shaped Saw Blade (MK wedge Blade) in inverted V-shaped High Tibial Osteotomy （口頭，一般） 2024/12/06
13.	Introducing an innovative device preventing neurovascular injury during drilling for distal screw holes of the plate in medial open wedge high tibial osteotomy （口頭，一般） 2024/07/05
14.	A Survey On The Usage Of Decellularized Tissues In Orthopedic Clinical Trials （ポスター掲示，一般） 2024/02/03
15.	Introducing an innovative device preventing neurovascular injury during drilling for distal screw holes of the plate in medial open wedge high tibial osteotomy （口頭，一般） 2023/09/23
16.	Time‑series biological responses toward decellularized bovine tendon graft and autograft for 52 consecutive weeks after rat anterior cruciate ligament reconstruction （ポスター掲示，一般） 2023/06/18
17.	A new device for prevention of neurovascular injury during drilling through distal holes of the plate in medial open wedge high tibial osteotomy （ポスター掲示，一般） 2023/05/11
18.	Favorable recellularization and tendon-bone integration abilities of four strand decellularized bovine tendon graft in a sheep model （ポスター掲示，一般） 2023/02/10
19.	Varus alignment was a risk factor for osteoarthritis of the knee after the anterior cruciate ligament injury: A systematic review and meta-analysis （ポスター掲示，一般） 2023/02/10
20.	Bony contact is essential to stabilize lateral hinge fracture during open wedge high tibial osteotomy （ポスター掲示，一般） 2020/02
21.	Differences in the Anterior Prominence of the Femoral Condyle among Prosthesis Designs in Total Knee Arthroplasty （ポスター掲示，一般） 2020/02
22.	Investigation of intraoperative gap balance and the risk factor of medial laxity in medial stabilizing gap technique total knee arthroplasty （ポスター掲示，一般） 2020/02
23.	Comparison of Tibial Torsion Changes between Hybrid Closed Wedge- and Medial Open Wedge High Tibial Osteotomy （ポスター掲示，一般） 2019/07
24.	The biomechanical property in monocortical fixation of distal locking screws for medial opening wedge high tibial osteotomy. （口頭，一般） 2019/06/21
25.	Three Dimensional Comparison of Tibial Torsion Changes Following Lateral Closed Wedge- or Medial Open Wedge High Tibial Osteotomy （ポスター掲示，一般） 2019/05
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■ Education

1.	2020/04～2024/03	〔Doctoral course〕〔Doctorial Course〕, Waseda University, Completed, Doctor of Biomedical Science
2.	2005/04～2011/03	Faculty of Medicine, Ehime University, Graduated

■ External Researcher ID

orcID

0000-0001-8188-5637