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Hwang, Ji Sup

Seoul National University · Medicine

About the Lab

Professor Hwang, Ji Sup's research lab specializes in spinal and orthopedic surgery, with a focus on minimally invasive techniques, degenerative spinal disorders, and joint preservation. The lab investigates innovative surgical approaches such as robot-assisted spinal fusion and arthroscopic treatment of hip pathology, aiming to improve clinical outcomes and reduce complications. Research also extends to rheumatoid arthritis of the hand and upper limb nerve disorders, particularly ulnar neuropathy, emphasizing surgical decision-making and long-term functional outcomes.

spinal surgeryminimally invasive surgeryjoint preservationulnar neuropathyrheumatoid arthritis

Research Overview

Papers
37
Total Citations
291
Papers (5y)
24
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
24total
2022
2023
2024
2025
2026
Citations per year (5y)
25total
20222023202420252026

Selected Papers

15
1
Article|134 citations·2014
Do Glycemic Markers Predict Occurrence of Complications After Total Knee Arthroplasty in Patients With Diabetes?
Ji Sup Hwang, Seok Jin Kim, Ankur B. Bamne, Young Gon Na, Tae Kyun Kim
SJR Q1Clinical Orthopaedics and Related ResearchOA

Level III, prognostic study.

SurgeryMedicine
2
Article|43 citations·2018
Risk factors of fixation failure in basicervical femoral neck fracture: Which device is optimal for fixation?
Young‐Kyun Lee, Byung‐Ho Yoon, Ji Sup Hwang, Yonghan Cha, Ki-Choul Kim, Kyung‐Hoi Koo
SJR Q1Injury
SurgeryMedicine
3
Article|40 citations·2018
Comparative study of 1‐year clinical and radiological outcomes using robot‐assisted pedicle screw fixation and freehand technique in posterior lumbar interbody fusion: A prospective, randomized controlled trial
Ho‐Joong Kim, Kyoung‐Tak Kang, Heoung‐Jae Chun, Ji Sup Hwang, Bong‐Soon Chang, Choon‐Ki Lee, Jin S. Yeom
SJR Q2International Journal of Medical Robotics and Computer Assisted Surgery

BACKGROUND: The purpose of this study was to compare the clinical outcome of surgery using robot-assisted posterior interbody fusion with that using freehand posterior interbody fusion in patients with degenerative spinal disease. METHODS: 78 participants with degenerative spinal disease were randomly allocated (1:1) to the minimally invasive (MIS), posterior lumbar interbody fusion (Robot-PLIF) or conventional, freehand, open-approach, posterior lumbar interbody fusion (Freehand-PLIF). RESULTS:

Pathology and Forensic MedicineMedicine
4
Article|13 citations·2018
Remaining Loose Bodies after Arthroscopic Surgery Including Extensive Capsulectomy for Synovial Chondromatosis of the Hip
Young‐Kyun Lee, Kyung Ho Moon, Jin‐Woo Kim, Ji Sup Hwang, Yong‐Chan Ha, Kyung‐Hoi Koo
SJR Q1Clinics in Orthopedic SurgeryOA

Arthroscopic surgery was useful to treat synovial chondromatosis of the hip. In spite of limited removal of loose bodies, arthroscopic procedures including extensive capsulectomy could be effective for the treatment of synovial chondromatosis of the hip.

RheumatologyMedicine
5
Article|9 citations·2021
Diagnosis of Neurogenic Thoracic Outlet Syndrome Based on the Clinical Status
Ji Sup Hwang, Jihyeung Kim, Shin Kim, Kee Jeong Bae, Yohan Lee, Goo Hyun Baek
SJR Q2Annals of Vascular Surgery
Radiology, Nuclear Medicine and ImagingMedicine
6
Review|9 citations·2021
Rheumatoid Hand Surgery in the Era of Biologic Therapy: A Rheumatologist-oriented Overview
Jin‐Woo Park, Ji Sup Hwang, Hyun Sik Gong
SJR Q2Journal of Rheumatic DiseasesOA

Rheumatoid arthritis (RA) can cause significant hand and wrist damage and dysfunction. The aim of medical treatment is to eradicate inflammation and prevent damage to joints and soft tissues. Advances in newer biological therapies over the last two decades have resulted in greater remission rates and lower disease activity status. Despite these improvements, surgical intervention is still indicated in cases of disability, irreversible deformities, and severe pain. However, there are large variat

SurgeryMedicine
7
Article|7 citations·2021
In Situ Neurolysis of Ulnar Nerve for Patients With Failed Anterior Subcutaneous Transposition – A Case Series
Ji Sup Hwang, Yohan Lee, Kee Jeong Bae, Jihyeung Kim, Goo Hyun Baek
SJR Q2Operative NeurosurgeryOA

BACKGROUND: Various surgical techniques have been attempted to treat patients with failed anterior subcutaneous transposition performed for cubital tunnel syndrome. OBJECTIVE: To analyze intraoperative findings of failed anterior subcutaneous transposition and to report the outcome of in Situ neurolysis of ulnar nerve. METHODS: Patients who, under diagnosis of failed anterior subcutaneous transposition of ulnar nerve, underwent in Situ neurolysis between 2001 and 2018 were included in this study

Radiology, Nuclear Medicine and ImagingMedicine
8
Article|6 citations·2022
The Natural History of Kienböck’s Disease Diagnosed at More than 50 Years of Age
Ji Sup Hwang, Bum-Jin Shim, Qingyuan Li, Jihyeung Kim, Goo Hyun Baek
SJR Q1Clinics in Orthopedic SurgeryOA

Our study suggests that Kienböck's disease diagnosed at more than 50 years of age can follow a benign natural course in radiographic and clinical aspects. Therefore, surgical interventions should be considered carefully in this age group.

SurgeryMedicine
9
Article|5 citations·2021
The impact of acute fracture on interpretation of bone turnover marker measurements for patients starting anti-resorptive therapies
Ji Sup Hwang, Sang‐Uk Lee, Hyun Sik Gong
SJR Q1Bone
Orthopedics and Sports MedicineMedicine
10
Article|5 citations·2024
A Lightweight Dynamic Hand Orthosis With Sequential Joint Flexion Movement for Postoperative Rehabilitation of Flexor Tendon Repair Surgery
Chan Beom Park, Ji Sup Hwang, Hyun Sik Gong, Hyung‐Soon Park
SJR Q1IEEE Transactions on Neural Systems and Rehabilitation EngineeringOA

During the postoperative hand rehabilitation period, it is recommended that the repaired flexor tendons be continuously glided with sufficient tendon excursion and carefully managed protection to prevent adhesion with adjacent tissues. Thus, finger joints should be passively mobilized through a wide range of motion (ROM) with physiotherapy. During passive mobilization, sequential flexion of the metacarpophalangeal (MCP) joint followed by the proximal interphalangeal (PIP) joint is recommended fo

SurgeryMedicine
11
Review|5 citations·2022
Three-Dimensional Analysis of the Trapezium Subchondral Bone and its Association with Trapeziometacarpal Joint Osteoarthritis
Ji Sup Hwang, Han Sang Lee, Hyun Sik Gong
SJR Q1Calcified Tissue International
SurgeryMedicine
12
Article|3 citations·2022
The Association of Index-to-Ring Finger Ratio With Trapeziometacarpal Joint Osteoarthritis in an Elderly Korean Population
Ji Sup Hwang, Sanghoon Lee, Jung Wook Shin, Ki Woong Kim, Hyun Sik Gong
SJR Q1The Journal of Rheumatology

OBJECTIVE: Index-to-ring finger ratio (IRFR) has been reported to be associated with joint osteoarthritis (OA). We aimed to evaluate the association between IRFR and trapeziometacarpal joint (TMCJ) OA in an elderly Korean population. METHODS: A population-based sample included 604 participants with a mean age of 74.8 years. IRFR was radiographically measured by the ratio of the length of the right second to fourth phalangeal bones ("phalangeal IRFR") and metacarpal bones ("metacarpal IRFR"), and

SurgeryMedicine
13
Article|2 citations·2023
How Does the Subchondral Bone Density Distribution of the Distal Humerus Change Between Early and Advanced Stages of Osteoarthritis?
Ji Sup Hwang, Samuel Jaeyoon Won, Hyun Sik Gong
SJR Q1Clinical Orthopaedics and Related ResearchOA

BACKGROUND: The distribution of subchondral bone density in a joint represents stress that is applied to the joint. Knowing this information is important for understanding the pathophysiology of osteoarthritis (OA). In the elbow, however, this has not been studied before. QUESTIONS/PURPOSES: (1) Is advanced-stage elbow OA associated with more radially distributed subchondral bone density than earlier stages? (2) What demographic (age and sex) and radiographic (osteophyte location and carrying an

RehabilitationMedicine
14
Article|2 citations·2021
A quantitative measurement of trapeziometacarpal joint pressure using a cadaveric model of lateral pinch
Ji Sup Hwang, Qingyuan Li, Jihyeung Kim
SJR Q1Journal of Orthopaedic Research®

Abstract Trapeziectomy is performed for trapeziometacarpal (TMC) arthritis but decreased lateral pinch strength is a major source of discomfort after the surgery. The magnitude of the decrease is unclear, however, and how the pressure changes in the TMC joint is unknown. To investigate this relationship, we designed a cadaveric study to measure TMC joint pressure using a lateral pinch model, and quantitatively evaluated the effect of trapeziectomy on the pressure measurements. For 10 cadaveric f

SurgeryMedicine
15
Article|1 citations·2024
Correction of Congenital Ring-Little Finger Metacarpal Synostosis Through Simultaneous Interpositional Allograft Bone After Split Osteotomy of the Synostosis Site and Distraction Lengthening of the Fifth Metacarpal
Ji Sup Hwang, Sang Beom, Jihyeung Kim, Goo Hyun Baek
SJR Q1The Journal Of Hand Surgery
Developmental BiologyBiochemistry, Genetics and Molecular Biology

Research Areas

SurgeryRadiology, Nuclear Medicine and ImagingPathology and Forensic MedicineOrthopedics and Sports MedicineRehabilitationDevelopmental Biology

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