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697 results on '"Ha, Kee-Yong"'

9. Analysis of Risk Factors Associated with Proximal Junctional Kyphosis Following Long Instrumented Fusion from L1 to Sacrum: Age Itself Does Not Independently Increase the Risk.

Author

Ahn, Joonghyun, Kim, Young-Hoon, Kim, Yong-Chan, Kim, Ki-Tack, Kim, Sung-Min, Park, Jun Bum, and Ha, Kee-Yong

Subjects
ERECTOR spinae muscles, LOGISTIC regression analysis, MAGNETIC resonance imaging, BODY mass index, UNIVARIATE analysis, LUMBAR vertebrae diseases
Abstract

Background and Objectives: This study is a retrospective analysis aimed at understanding the incidence and risk factors of proximal junctional kyphosis (PJK) following long-instrumented spinal fusion from L1 to the sacrum in patients with mild to moderate sagittal imbalance. Materials and Methods: It recruited consecutive patients undergoing instrumented fusion from L1 to the sacrum for degenerative lumbar disease between June 2006 and November 2019 in a single institution. The patients' preoperative clinical data, muscle status at T12-L1 on magnetic resonance images, and sagittal spinopelvic parameters were analyzed. Univariate analysis was used to compare clinical and radiographic data between PJK and non-PJK patients. Logistic regression analysis was used to investigate the independent risk factors for PJK. Results: A total of 56 patients were included in this study. The mean age at surgery was 67.3 years and mean follow-up period was 37.3 months. In total, 10 were male and 46 were female. PJK developed in 23 (41.1%) out of 56; of these patients, 20 (87.0%) developed PJK within 1 year postoperatively. In the univariate analysis between PJK and non-PJK patients, the PJK group showed more frequent osteoporosis, lower body mass index, smaller cross-sectional area (CSA) and more fat infiltration (FI) in erector spinae muscle at T12-L1 and larger preoperative TLK and PT with statistical significance (p < 0.05). In the logistic regression analysis, severe (>50%) FI in erector spinae muscle (OR = 43.60, CI 4.10–463.06, R2N = 0.730, p = 0.002) and osteoporosis (OR = 20.49, CI 1.58–264.99, R2N = 0.730, p = 0.021) were statistically significant. Conclusions: Preexisting severe (>50%) fat infiltration in the erector spinae muscle and osteoporosis were independent risk factors associated with PJK following instrumented fusion from L1 to the sacrum, but age was not a risk factor. [ABSTRACT FROM AUTHOR]

Published
2024
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12. The Effects of Longer Use of Teriparatide on Clinical and Radiographic Outcomes after Spinal Fusion in Geriatric Patients.

Author

Kim, Young-Hoon, Ha, Kee-Yong, Bae, Hyun W., Park, Hyung-Youl, Ko, Young-Il, Ko, Myung-Sup, and Kim, Sang-Il

Subjects
SPINAL fusion, SPINAL surgery, TERIPARATIDE, TREATMENT effectiveness, VERTEBRAL fractures, SUBCUTANEOUS injections, FRACTURE healing
Abstract

Background: Teriparatide is an anabolic agent for osteoporosis and is believed to improve the bone healing process. Previous studies showed that teriparatide could enhance not only fracture healing but also spine fusion. It has been reported that use of teriparatide could promote the spine fusion process and decrease mechanical complications. However, there was no consensus regarding optimal treatment duration. The purpose of this study was to compare surgical outcomes between short-duration and long-duration teriparatide treatment after lumbar fusion surgery in elderly patients. Materials and Methods: All consecutive patients older than 60 years who underwent 1-level lumbar fusion surgery for degenerative diseases between January 2015 and December 2019 were retrospectively reviewed. Based on the duration of teriparatide treatment (daily subcutaneous injection of 20 µg teriparatide), patients were subdivided into two groups: a short-duration (SD) group (<6 months) and a long-duration (LD) group (≥6 months). Mechanical complications, such as screw loosening, cage subsidence, and adjacent vertebral fractures, were investigated. Postoperative 1-year union rate was also evaluated on computed tomography. Clinical outcomes were recorded using visual analog scale (VAS) and Oswestry Disability Index (ODI). Between-group differences for these radiographic and clinical outcomes were analyzed. Results: Ninety-one patients were reviewed in this study, including sixty patients in the SD group and thirty-one patients in the LD group. Their mean age was 72.3 ± 6.2 years, and 79 patients were female. Mean T-score was −3.3 ± 0.8. Cage subsidence (6.7% vs. 3.2%), screw loosening (28.3% vs. 35.5%), and adjacent vertebral fracture (6.7% vs. 9.7%) were not significantly different between the SD and LD groups. Union rate at 1-year postoperative was 65.0% in the SD group and 87.1% in the LD group (p = 0.028). Both groups showed improvement in VAS and ODI after surgery. However, the differences of VAS from preoperative to 6 months and 1 year postoperative were significantly higher in the LD group. Conclusions: Longer teriparatide treatment after lumbar fusion surgery resulted in a higher union rate at 1-year postoperative than the shorter treatment. Also, it could be more beneficial for clinical outcomes. [ABSTRACT FROM AUTHOR]

Published
2024
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41. Lumbar Interbody Fusion and Osteobiologics for Lumbar Fusion

Author

Kim, Young-Hoon, primary, Ha, Kee-Yong, additional, Kim, Youn-Soo, additional, Kim, Ki-Won, additional, Rhyu, Kee-Won, additional, Park, Jong-Beom, additional, Shin, Jae-Hyuk, additional, Kim, Young-Yul, additional, Lee, Jun-Seok, additional, Park, Hyung-Youl, additional, Ko, Jaeryong, additional, and Kim, Sang-Il, additional

Published
2022
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