Journal of Musculoskeletal Trauma

Je Hyun Yoo

5 Articles

Locked Plating in Elderly Patients with Distal Femur Fracture: How to Avoid Complications?: Chul Young Jang, Je Hyun Yoo; J Korean Fract Soc 2019;32(2):112-119. Published online April 30, 2019; DOI: https://doi.org/10.12671/jkfs.2019.32.2.112

Abstract PDF: Distal femur fractures in elderly patients with osteoporosis are complicated because poor bone quality makes screw purchase and fixation less secure, presenting many clinical challenges to the orthopedic surgeon. Minimally invasive locked plating using an angularly stable locking compression plate has become an integral tool for achieving secure fixation in osteoporotic distal femur fractures with improved biomechanical performance. On the other hand, complications, such as implant failure and periplate fracture, have still occurred. This paper describes the principles of internal fixation in minimally invasive lateral locked plating in elderly patients with osteoporotic distal femur fractures as well as how to avoid complications.

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Cognitive Impairment in Hip Fracture Patients without Underlying Neurologic Diseases: Risk Factors and Relationship to Early Functional Recovery: Preliminary Study: Jae Yong Park, Yong Beom Lee, Kun Tae Park, Je Hyun Yoo, Narei Hong; J Korean Fract Soc 2016;29(1):34-41. Published online January 31, 2016; DOI: https://doi.org/10.12671/jkfs.2016.29.1.34

Abstract PDF Supplementary Material: PURPOSE
The aim of this study is to examine the risk factors of cognitive impairment in elderly hip fracture patients with no underlying neurologic disease, and to determine its effect on functional recovery postoperatively.
MATERIALS AND METHODS
From August 2012 to August 2013, 39 patients older than 65 years of age, who underwent hip fracture surgery and were followed-up for a minimum of 1 year at Hallym University Sacred Heart Hospital, were enrolled. All patients were assessed using Korean version of Mini-Mental State Examination (MMSE-K) after admission. All patients were divided into cognitive normal group (MMSE-K> or =24) and cognitive impairment group (MMSE-K<24). WOMAC (Western Ontario and McMaster University) score and Harris hip score were used for assessment of functional recovery at 6-month follow-up.
RESULTS
Sixteen patients (41.0%) were classified as the cognitive impairment group. The number of underlying diseases was the only statistically different factor between the two groups. In the evaluation of functional outcome, the functional decline was less in the cognitive normal group. Risk factors for cognitive impairment in elderly hip fracture patients were old age, high body mass index, and the number of underlying diseases, particularly an endocrinologic disease like diabetes.
CONCLUSION
Cognitive impairment in elderly patients may have a negative effect on functional recovery after hip fracture surgery. Therefore, we recommend routine evaluation of cognitive function in elderly hip fracture patients even with no underlying neurologic disease.

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Selection of Plate in Internal Fixation of Fractures: Locking Plate and Compression Plate: Jae Yong Park, Je Hyun Yoo; J Korean Fract Soc 2013;26(1):92-102. Published online January 31, 2013; DOI: https://doi.org/10.12671/jkfs.2013.26.1.92

Abstract PDF

No abstract available.

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The application of a dual-lead locking screw could enhance the reduction and fixation stability of the proximal humerus fractures: a biomechanical evaluation
Eunju Lee, Hyeon Jang Jeong, Yeon Soo Lee, Joo Han Oh
Frontiers in Surgery.2024;[Epub] CrossRef
A Study on Defect Detection Model of Bone Plates Using Multiple Filter CNN of Parallel Structure
Song Yeon Lee, Yong Jeong Huh
Journal of the Korean Society for Precision Engineering.2023; 40(9): 677. CrossRef
Treatment of forearm diaphyseal non-union: Autologous iliac corticocancellous bone graft and locking plate fixation
Shin Woo Choi, Joo Yul Bae, Young Ho Shin, June Hoe Song, Jae Kwang Kim
Orthopaedics & Traumatology: Surgery & Research.2021; 107(8): 102833. CrossRef
Evaluation of Mechanical Performance of Fibula Trauma Plate via EBM and SLM-Based Additive Manufacturing
Hyo-Bok Jeong, Sung-Jun Park
Journal of the Korean Society of Manufacturing Technology Engineers.2021; 30(2): 148. CrossRef
Mechanical and Physical Characteristics Analysis of Radius Trauma Plate by EBM Additive Manufacturing
Kwun-Mook Lim, Sung-Jun Park
Journal of the Korean Society of Manufacturing Technology Engineers.2020; 29(2): 147. CrossRef
Locked Plating in Elderly Patients with Distal Femur Fracture: How to Avoid Complications?
Chul-Young Jang, Je-Hyun Yoo
Journal of the Korean Fracture Society.2019; 32(2): 112. CrossRef

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Analysis of the Fixation Failure in Intertrochanteric Hip Fractures Treated with Hip Nailing: Jun Dong Chang, Tae Young Kim, Ji Hyo Hwang, Seul Ki Min, Je Hyun Yoo; J Korean Fract Soc 2012;25(3):169-176. Published online July 31, 2012; DOI: https://doi.org/10.12671/jkfs.2012.25.3.169

Abstract PDF

PURPOSE
To analyze the patterns of and risk factors for fixation failure after hip nailing in intertrochanteric (IT) hip fractures.
MATERIALS AND METHODS
Fourteen patients who sustained a fixation failure after hip nailing for IT hip fractures were enrolled in this study. The mean age at the index surgery was 74.5 years and the mean time to the fixation failure was 6.6 weeks. All of the serial radiographs up to the fixation failure and pre-operative 3-D computed tomography were analyzed.
RESULTS
According to AO classification, there were 7 stable fractures and 7 unstable ones. Of the total of 14 cases, 10 showed a comminution of the greater trochanter tip and incomplete anatomical reduction of the medial and anterior cortex at the fracture site. Of the 10 cases with appropriate position of the lag screw within the femoral head, 9 showed a high pertrochanteric fracture (HPF) pattern. The mechanism of the fixation failure was rotation of the femoral head in 7 of 9 cases with HPF and varus collapse of the proximal fragment in 4 of the other 5 cases.
CONCLUSION
The HPF pattern, the comminution of the greater trochanter tip, and incomplete reduction of the medial and anterior cortex may be additional risk factors of fixation failure after treating IT hip fractures with hip nailing in.

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Unstable Intertrochanteric Fracture Treated with ITST: A Comparative Study between Groups with and without Comminution of Greater Trochanter
Kyung-Sub Song, Sang-Ho Lee, Seong-Hun Jeong, Su-Keon Lee, Sung-Ha Hong
Journal of the Korean Fracture Society.2014; 27(1): 36. CrossRef

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Correlation between Anterior and Posterior Obliquity of the Sliding Lag Screw and Stability in Unstable Intertrochanteric Fractures: Kyu Hyun Yang, Je Hyun Yoo, Dong Joo Rhee, Jung Hoon Won, Dae Ya Kim, Dong Sik Sim; J Korean Fract Soc 2004;17(4):308-313. Published online October 31, 2004; DOI: https://doi.org/10.12671/jkfs.2004.17.4.308

Abstract PDF: PURPOSE
To investigate the characteristics of the sliding pattern of the proximal fragment (head and neck) in unstable intertrochanteric fractures, which were fixed with a dynamic hip screw (DHS) with anterior to posterior or posterior to anterior insertion angle in the axial view.
MATERIALS AND METHODS
AO type A2.1 intertrochanteric fracture was reproduced in 10 proximal femur model (Synbone, Malans, Switzerland). Five fractured models were reduced and fixed using DHS with anterior to posterior insertion angle (group 1) and five models were fixed with posterior to anterior angle (group 2). Load of 500 N (30 cycles) was applied to the fracture fragment-plate complex using Instron 6022. Data on the distance of sliding and the angle of rotation of the proximal fragment were collected and analyzed.
RESULTS
No significant difference was noted statistically in the distance of sliding between the two groups (p=0.92). However, the mean angle of rotation was 13.4degrees and 8.0degrees in group 1 and 2, respectively and the difference was statistically significant (p=0.012). Anterior cortical fracture of distal fragment was noted in 3 cases of group 1. There was no fracture of the anterior cortex in group 2.
CONCLUSION
In unstable intertrochanteric fracture, the insertion angle of the lag screw in axial view does seem to play a role in the fate of bone-plate complex. Early eccentric contact of both fragments caused rotation of the proximal fragment in all cases and anterior cortical fracture of the distal fragment in 3 cases of group 1.

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