Publications by authors named "Hyun Chul Shon"

Backgroud: Acetabular fractures are rare and challenging to treat, and the surgeon's learning curve for managing these fractures is steep. The incidence of acetabular fractures is low, making it difficult to conduct single-surgeon, single-center studies. Therefore, multi-surgeon and multi-center studies may produce inconsistent outcomes compared to those of single-surgeon, single-center studies.

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This study aimed to investigate the outcomes of elderly acetabular fractures according to the reduction of impacted dome fragments. A retrospective cohort study was performed in two institutions. Fifty-four patients aged ≥ 60 years with acetabular fractures were enrolled.

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Case: We describe the case of a 63-year-old man with anterior ankle dislocation and fracture confirmed by x-ray. Postreduction x-ray and computed tomography (CT) revealed Arbeitsgemeinschaft für Osteosynthesefragen/Orthopaedic Trauma Association (AO/OTA) type 44C3 and Lauge-Hansen pronation-external rotation-type ankle fractures.

Conclusion: This was a rare case of ankle fracture dislocation because of entrapment of the tibialis posterior and flexor digitorum longus tendons in the interosseous membrane.

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Background: The quality of reduction is an important factor affecting clinical outcomes for displaced femoral neck fractures (FNFs). However, concerns remain about the invasiveness of open reduction and internal fixation (ORIF) as compared to that of closed reduction and internal fixation (CRIF), and the choice between ORIF and CRIF as an optimal treatment strategy for displaced pediatric FNF remains controversial.

Materials And Methods: MEDLINE, Embase, and the Cochrane Library were systematically searched for studies published up to December 22, 2022, that compared ORIF and CRIF techniques for treating FNF in children.

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Rationale: Femoral head fracture is a rare type of fracture commonly associated with hip dislocation. Femoral head fracture treatments include conservative treatment, fragment excision, open reduction, internal fixation, and arthroplasty. In cases of young patients, open reduction and internal fixation are preferred over arthroplasty.

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Article Synopsis
  • The study compares two surgical techniques, the paratricipital approach (PT) and olecranon osteotomy (OO), for treating distal humerus intra-articular fractures to evaluate their operation times, functional outcomes, and complications.
  • Analysis of five studies involving 243 patients revealed that the OO group had a significantly longer operation time and higher infection rates compared to the PT group, though functional outcomes were similar for both groups.
  • The findings suggest that surgeons can choose either approach based on their expertise, as the choice of method does not significantly impact recovery outcomes.
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Pelvic ring injuries have high mortality and morbidity rates, and they are difficult to treat because accompanying injuries to the pelvic organs, genitourinary organs, and neurovascular tissues are common. Genitourinary injuries are common comorbid injuries that have been reported to occur in 5% to 6% of all pelvic ring injuries. However, these injuries usually occur simultaneously with the pelvic ring injury, whereas relatively little research has dealt with genitourinary injuries that occur after treatment of a pelvic ring injury.

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Case: A 74-year-old woman presented with multiple rib fractures, hemothorax, spleen rupture, and right shoulder dislocation. Shoulder joint reduction was performed using the traction-countertraction method. An injury to the descending aorta, caused by the seventh rib, was confirmed.

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Background: This study aimed to determine characteristics of acetabular fractures in the elderly by evaluating clinical course and computed tomography-based radiological features between low- and high-energy acetabular fractures.

Methods: We reviewed 178 consecutive patients with acetabular fractures aged ≥60 years from six centers. Low-energy fractures (group 1) were identified in 23 (12.

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Introduction: With minimal systemic toxicity, an analgesic effect of regional nerve block (RNB) has been proved in hip fracture cases. Analgesia was expected to reduce delirium by controlling pain, a known predisposing factor for delirium. We performed a meta-analysis to investigate the effect of RNB on delirium after hip fracture surgery in elderly patients.

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Background: Although many studies have investigated iatrogenic radial nerve palsy (RNP) in humerus shaft fracture, there is inconsistent evidence on which approach leads to iatrogenic RNP. Moreover, no meta-analysis has directly compared the anterolateral and posterior approaches regarding iatrogenic RNP.

Methods: In this systematic review and meta-analysis, the MEDLINE, Embase, and Cochrane Library databases were searched systematically for studies published before March 30, 2021.

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Vertically oriented femoral neck fractures (FNFs) are known to be especially unstable FNFs, and they have a higher associated risk of failure. The dynamic hip screw (DHS) technique and the cannulated cancellous screw (CCS) technique are the two main fixation techniques used in the treatment of FNFs. However, no large clinical study has compared the DHS and CCS techniques in patients with high-shear-angle FNFs.

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Postoperative delirium is common in elderly patients with hip fracture. Pain is a major risk factor for delirium, and regional nerve blocks (RNBs) effectively control pain in hip fractures. This study aimed to evaluate the effect of RNB on delirium after hip surgery in elderly patients.

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We report the long-term results of Bernese periacetabular osteotomy using a dual approach in hip dysplasia. Fifty-three hips (49 patients, mean age 39.9 years: 13-62 years; bilateral hips: four patients) that underwent periacetabular osteotomy using a dual approach (combined Smith-Peterson and Kocher-Langenbeck techniques) between May 1997 and December 2005 were analyzed in this study.

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Objective: To determine the factors affecting the amount of weight-bearing during gait training in the elderly patients who underwent internal fixation after femur or pelvic fractures and how well they performed the weight-bearing restriction as directed by the physiatrist.

Methods: In this retrospective chart review study, we measured the amount of weight-bearing on the affected side in 50 patients undergoing internal fixation surgery and rehabilitation after femur or pelvic fracture using a force plate. Patients receiving non-weight-bearing or partial weight-bearing education were considered to perform weight-bearing restriction well when the amount of weight-bearing was <50 lb.

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Introduction: This study evaluated the optimal anatomical locking plate position using three-dimensional printed models of the clavicle.

Materials And Methods: Three-dimensional models of the fractured clavicle were reproduced from seventeen patients who underwent minimally invasive plate osteosynthesis (MIPO) procedures. The fracture location-the percentage of the distal fragment length compared to the entire clavicle-ranged from 30-44%.

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Introduction: The treatment of unstable intertrochanteric fracture in elderly patients is challenging and how to treat these patients remains controversial. The purposes of this study were to compare (1) reoperation rate, (2) mortality and (3) the postoperative change of walking ability between patients undergoing internal fixation (IF) and those undergoing bipolar hemiarthroplasty (HA) due to this type of fracture based on the data from the Korean Hip Fracture Registry.

Materials And Methods: Between July 2014 and June 2016, we extracted 623 unstable intertrochanteric fractures (616 patients aged ≥ 65 years) according to the classification of the Association for the Study of Internal Fixation-American Orthopaedic Trauma Association.

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Article Synopsis
  • Skin cancer needs to be carefully removed by doctors to avoid it coming back, but they also have to think about how to fix the skin afterward.
  • Fixing holes in the skin on the bottom of the foot is tough, so different doctors might use different methods.
  • In this study, doctors tried using an artificial skin to help heal skin defects after removing cancer, and it worked well for two patients, with no major issues.
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Aim: The present study aimed to investigate the risk factors and prognostic implications of aspiration pneumonia in older hip fracture patients.

Methods: A total of 394 female and 125 male hip fracture patients aged ≥60 years who underwent surgery between 2015 and 2018 were retrospectively analyzed. To identify risk factors of aspiration pneumonia, demographic factors, the American Society of Anesthesiologists classification, past medical history, known risk factors of aspiration and factors associated with surgery were compared between the aspiration pneumonia group and the control group.

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Background: It is often difficult to achieve satisfactory reduction and fixation of both-column acetabular fractures owing to the complexity of the regional anatomy of the pelvis and the fracture configuration, which is commonly associated with a high degree of comminution. Herein, we describe the use of a three-dimensional (3D) patient-specific printed model of the pelvis to facilitate preoperative planning, simulate the fracture reduction procedure, and pre-contour the fixation plates for treating both-column acetabular fractures.

Methods: The 3D-printed model was constructed using a fused deposition modeling method with computed tomography images as inputs.

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A femoral shaft fracture is usually a high-energy injury and, thus, is likely to be accompanied by an injury of adjacent joints such as a knee ligament injury. However, these associated injuries are often neglected because of severe pain and deformity. The purpose of the current study is to evaluate the incidence, type and risk factors of ipsilateral knee injuries associated with femoral shaft fractures.

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The supracondylar process is a beak-shaped bony process on the anteromedial aspect of the distal humerus. The ligament of Struthers is a fibrous band extending from the tip of the process to the medial epicondyle. The median nerve and brachial artery pass under the ligament of Struthers and consequently can be compressed, causing supracondylar process syndrome.

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Introduction: The purpose of this study was to evaluate the proportion of greater trochanter (GT) fractures with occult extension to the intertrochanteric region on magnetic resonance imaging (MRI) among apparently isolated GT fractures and to investigate the use of MRI for formulating a treatment strategy in patients with isolated GT fractures.

Patients And Methods: This retrospective cohort study reviewed 37 patients with isolated GT fractures on plain radiography. Surgical or conservative treatment was decided according to MRI findings.

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Background: To report our experiences with the use of three-dimensional (3D) printing in the field of orthopedic trauma.

Methods: This retrospective study enrolled 24 patients from three university teaching hospitals in whom 3D printing technique was applied: 14 patients with acetabular fractures and 10 patients with clavicular shaft fractures. We summarized our experiences with 3D printed bone models.

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Inadvertent intra-arterial drug injection occurs rarely, but it can cause very serious clinical complications, and thus, awareness of inadvertent intra-arterial drug injection is needed. The complications mainly result from iatrogenic reasons and can occur because of vascular variations in the arteries, under circumstances where normal intravenous injection is difficult, or in drug abusers who perform self-injection. The adverse effect associated with intra-arterial drug injection is serious and may lead to necrosis, requiring amputation of the affected extremity, infection, pseudoaneurysm, rhabdomyolysis, compartment syndrome, and permanent disability.

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