Chi Young An

Dr. Chi Young An


Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
31 October 2023 in Journal of Yeungnam Medical Science
Verified
Journal Article
Open access
JKJahyung Kim
Jahyung Kim
ONOtgonsaikhan Nomkhondorj
Otgonsaikhan Nomkhondorj
CAChi Young An
Chi Young An
예최예찬 최
예찬 최
Jaeho ChoJaeho Cho
Jaeho Cho
Diabetic foot ulcers (DFUs) are among the most serious complications of diabetes and are a source of reduced quality of life and financial burden for the people involved. For effective DFU management, an evidence-based treatment strategy that considers the patient's clinical context and wound condition is required. This treatment strategy should include conventional practices (surgical debridement, antibiotics, vascular assessment, offloading, and amputation) coordinated by interdisciplinary DFU experts. In addition, several adjuvant therapies can be considered for nonhealing wounds. In this narrative review, we aim to highlight the current trends in DFU management and review the up-to-date guidelines.

JNJae-Hwi Nho
Jae-Hwi Nho
BJByung-Woong Jang
Byung-Woong Jang
CAChi Young An
Chi Young An
JYJae Hwa Yoo
Jae Hwa Yoo
SSSanghoon Song
Sanghoon Song
BKByungsung Kim
Byungsung Kim
Distal radius fractures (DRFs) are very common injuries associated with aging, and the number of fractures is increasing with the increase in the elderly population. General anesthesia or brachial plexus block (BPB) is required for fracture fixation, and acute postoperative pain control is necessary after operation. Early pain control can improve patient satisfaction and functional outcomes. In this study, we report the clinical differences in postoperative pain, according to the method of anesthesia (general anesthesia versus brachial plexus block). Volar plating was used to treat 72 patients older than 60 years who had comminuted DRF. Patients were randomized to either group A (36 patients), who underwent general anesthesia, or group B (36 patients), who underwent BPB. We compared these two groups prospectively for acute postoperative pain using a visual analog scale (VAS) at 2, 4, 6, 12, and 24 h after surgery. The VAS scores of each group were: 6.8 ± 2.5 in general anesthesia and 0.5 ± 2.3 in BPB at 2 h, postoperatively; 6.5 ± 2.4 in general anesthesia and 0.5 ± 2.4 in BPB anesthesia at 4 h, postoperatively; 5.2 ± 2.4 in general anesthesia and 1.5 ± 2.4 in BPB anesthesia at 6 h, postoperatively; 4.5 ± 2.5 in general anesthesia and 3.4 ± 2.7 in BPB anesthesia at 12 h, postoperatively; and 3.5 ± 2.5 in general anesthesia and 3.2 ± 2.7 in BPB anesthesia at 24 h, postoperatively. DRF patients with BPB anesthesia showed a lower VAS score than those subjected to general anesthesia in early postoperative period. As a result, the effect of BPB anesthesia on acute pain management after surgery was excellent, which resulted in a lower pain score compared with general anesthesia in DRF patients undergoing volar plating.

31 January 2025 in Diagnostics
Verified
Journal Article
Open access
PDF file
DCDong-Il Chun
Dong-Il Chun
Jaeho ChoJaeho Cho
Jaeho Cho
SWSung Hun Won
Sung Hun Won
ONOtgonsaikhan Nomkhondorj
Otgonsaikhan Nomkhondorj
JKJahyung Kim
Jahyung Kim
YYYoung Yi
Young Yi
Since its introduction, weight-bearing computed tomography (WBCT) has gained prominence due to its ability to produce accurate three-dimensional images under natural loading conditions, making it particularly useful for assessing complex foot deformities. This review aimed to focus on the diseases of the foot and categorized the pathological conditions into forefoot disease (hallux valgus), midfoot disease (Lisfranc injuries and midfoot osteoarthritis), and progressive collapsing foot deformity. For each category, the authors detail how WBCT enhances diagnostic accuracy and informs treatment strategies. In hallux valgus, WBCT allows for more precise measurement of established parameters and reveals crucial information about metatarsal pronation and ray instability. For midfoot pathologies, WBCT’s superiority in detecting subtle Lisfranc injuries and characterizing midfoot osteoarthritis is emphasized, highlighting the development of novel measurement techniques. The review extensively covers the application of WBCT in assessing the complex three-dimensional features of PCFD, including hindfoot valgus, midfoot/forefoot abduction, medial column instability, peritalar subluxation, and valgus tilting, presenting several WBCT-specific measurements and the use of distance mapping to quantify joint surface interaction. The authors conclude that WBCT, potentially enhanced through integration with artificial intelligence (AI), represents a significant advancement in foot and ankle care, promising improved diagnostic accuracy, streamlined treatment planning, and, ultimately, better patient outcomes.

31 October 2023 in Journal of Yeungnam Medical Science
Verified
Journal Article
Open access
CAChi Young An
Chi Young An
SBSeung Lim Baek
Seung Lim Baek
DCDong-Il Chun
Dong-Il Chun
Diabetic foot is one of the most devastating consequences of diabetes, resulting in amputation and possibly death. Therefore, early detection and vigorous treatment of infections in patients with diabetic foot are critical. This review seeks to provide guidelines for the therapy and rehabilitation of patients with moderate-to-severe diabetic foot. If a diabetic foot infection is suspected, bacterial cultures should be initially obtained. Numerous imaging studies can be used to identify diabetic foot, and recent research has shown that white blood cell single-photon emission computed tomography/computed tomography has comparable diagnostic specificity and sensitivity to magnetic resonance imaging. Surgery is performed when a diabetic foot ulcer is deep and is accompanied by bone and soft tissue infections. Patients should be taught preoperative rehabilitation before undergoing stressful surgery. During surgical procedures, it is critical to remove all necrotic tissue and drain the inflammatory area. It is critical to treat wounds with suitable dressings after surgery. Wet dressings promote the formation of granulation tissues and new blood vessels. Walking should begin as soon as the patient’s general condition allows it, regardless of the wound status or prior walking capacity. Adequate treatment of comorbidities, including hypertension and dyslipidemia, and smoking cessation are necessary. Additionally, broad-spectrum antibiotics are required to treat diabetic foot infections.

Verified
Journal Article
Open access
PDF file
SCSung-Woo Choi
Sung-Woo Choi
CAChi Young An
Chi Young An
SBSeung Lim Baek
Seung Lim Baek
MBMin Jung Baek
Min Jung Baek
JLJae Chul Lee
Jae Chul Lee
BSByung-Joon Shin
Byung-Joon Shin
Background/Objectives: The access route to the surgical treatment of pyogenic spondylitis is a critical issue. However, no published clear guidelines are available about the access route for the surgical treatment of pyogenic spondylitis. The objective of this study was to compare clinical outcomes according to surgical treatment approach (anterior approach with or without posterior approach versus posterior only approach) of pyogenic spondylitis. Methods: This study included patients who underwent surgical treatment for pyogenic spondylitis. These patients were divided into two groups according to surgical treatment approach: anterior approach with/without posterior approach (anterior group) and posterior-only approach (posterior group). Their baseline data, treatment failure, radiologic outcome, and ambulatory ability were compared. Results: Demographic data and clinical characteristics were similar (p > 0.05) between the two groups. Baseline radiologic characteristics of infection, including infected spinal level, number of infected segments, presence of epidural abscess, and vertebral body collapse, were also comparable between the two groups. The number of unplanned surgeries was less in the anterior group than in the posterior group (p < 0.05). Approach-related complications tended to occur more often in the anterior group, although the difference was not statistically significant (p = 0.067). There was no significant difference in radiologic outcome or final ambulation ability after surgery between the two groups (p > 0.05). Conclusions: Anterior approach with or without posterior approach offers fewer treatment failure rates, particularly regarding revision surgeries, than a posterior-only approach. Thus, an anterior approach with or without a posterior approach should be used when planning surgical treatment for pyogenic spondylitis.