Publications by authors named "Yunsoo Lee"

Article Synopsis
  • A retrospective cohort study aimed to compare three socioeconomic status (SES) indexes and their association with outcomes after anterior cervical discectomy and fusion (ACDF) or lumbar fusion.
  • The study involved identifying adult patients who underwent these surgeries at a medical center from 2014 to 2020, analyzing their preoperative conditions and outcomes based on SES classifications derived from community-level indexes.
  • Results indicated that while patients from lower SES communities had worse preoperative outcomes, the community-wide SES indexes were ineffective in predicting surgical outcomes post-surgery.
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Background Context: Previous research has demonstrated an association between socioeconomic status (SES) and patient health, specifically noting that patients of lower SES have poor health outcomes. Understanding how social factors, including socioeconomic status (SES), relate to disparities in health outcomes is critical to closing gaps in equitable care to patients. While several studies have examined the effect of SES on postoperative spine outcomes, there is limited spine literature evaluating SES in the context of barriers to spine care.

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Objective: A quarter of spine surgery patients take antidepressants. Basic science research has suggested serotonergic antidepressants impair platelet function. This has been supported by only a small number of works in the setting of spine surgery.

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Objective: Venous thromboembolism (VTE) is a serious postoperative adverse event after spine surgery. In patients with pain refractory to typical multimodal analgesia regimens after spine surgery, whom are often chronic opioid users, perioperative ketamine is an alternative analgesic that has grown in popularity. The aim of this study is to assess the risk of VTE in chronic opioid users undergoing spine surgery.

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Background: The purpose of this study is to determine the impact of community-level socioeconomic status (SES) on surgical outcomes and patient-reported outcome measures (PROMs) following revision lumbar fusion.

Methods: Adult patients who underwent revision lumbar fusion surgery from 2011-2021 were grouped by Distressed Community Index (DCI) into Prosperous, Comfortable, Mid-tier, and At-Risk/Distressed cohorts. Demographics, surgical information, and PROMs were compared based on DCI community status.

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Article Synopsis
  • The study highlights that about 20% of patients with metastatic spine disease experience depression, while approximately 17% struggle with anxiety, emphasizing the need for mental health awareness in this population.
  • Data was collected from patients over 18 years old who underwent treatment for metastatic spinal disease from 2017 to 2022, revealing a significant number of both depression and anxiety diagnoses among them.
  • The findings suggest that spine surgeons should actively screen for mental health issues in patients with spinal metastases to ensure timely referrals for psychological support.
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Article Synopsis
  • - The study investigated the safety and feasibility of a new spinal electrical stimulation technology called RISES, which allows real-time adjustments to stimulation settings while collecting various data.
  • - Four participants with spinal cord injuries (SCIs) were tested, and results showed no serious adverse effects, with stable skin integrity, vital signs, and pain levels; however, fatigue increased post-stimulation.
  • - The trial compared open-loop and closed-loop stimulation methods, finding that while open-loop sessions had longer stimulation durations, there were no significant differences in setup time or other health measures between the two methods.
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Background: Although diversity has improved across certain orthopaedic subspecialties, enhancing diversity within spine surgery has remained a challenge. We aimed to investigate the current state of sex, racial, and ethnic diversity among academic orthopaedic spine surgeons in the United States.

Methods: In January 2024, a cross-sectional analysis of orthopaedic spine surgery faculty in the United States was conducted using the Doximity database to identify eligible surgeons.

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Background Context: Lumbar spinal fusion is an increasingly common operation to treat symptoms related to degenerative disorders of the spine including radiculopathy and pain. As the volume of spine surgeries grows, it is becoming increasingly common for procedures to take place in nontertiary care centers, including orthopaedic specialty hospitals (OSH). While previous research demonstrates that surgical outcomes at an OSH are noninferior to those at a tertiary referral center (TRC), the implications of this difference on patient-reported outcome measures (PROMs) have not been sufficiently assessed.

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Study Design: Retrospective cohort study.

Objective: The objective of this study was to determine if baseline prognostic nutritional index (PNI) score could be used to predict outcomes in patients with native spine infections, including the need for operative intervention.

Summary Of Background Data: Nutritional status is an important, potentially modifiable risk factor, to consider in the native spine population.

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Objective: To determine prescription trends across specialties in the perioperative care of patients undergoing spine surgery from 2018 to 2021.

Summary Of Background Data: A range of measures, including implementation of state prescription drug monitoring programs, have been instituted to combat the opioid epidemic. Considering the continued presence of opioids for spine-related pain management, a better understanding of the patterns of opioid prescription practices may be important for future intervention.

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Study Design: Retrospective cohort study.

Objective: To examine how community-level economic disadvantage impacts short-term outcomes following posterior cervical decompression and fusion (PCDF) for cervical spondylotic myelopathy.

Summary Of Background Data: The effects of socioeconomic factors, measured by the Distress Community Index (DCI), on postoperative outcomes after PCDF are underexplored.

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Purpose: To report the rate of fusion in a sample of patients undergoing lumbar fusion surgery and assess interrater reliability of computed tomography (CT)-based parameters for the assessment of fusion.

Methods: All adult patients who underwent lumbar fusion surgery from 2017 to 2021 were retrospectively identified. Patient demographics and surgical characteristics were collected through chart review of the electronic medical records.

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Study Design: Retrospective cohort study.

Objective: The purpose of this study is to determine which demographic, surgical, and radiographic preoperative characteristics are most associated with the need for subsequent fusion after decompression lumbar spinal surgery.

Summary Of Background Data: There is a relatively high rate of the need for repeat decompression or fusion after an index decompression procedure for degenerative spine disease.

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Background: The North American Spine Society (NASS) assembled the first ever comprehensive naming system for describing lumbar disc disease, including lumbar disc herniation. The objectives of this study were (1) to determine which NASS descriptors are most predictive of independent patient-reported outcomes after microdiscectomy and (2) to identify the inter-rater reliability of each NASS descriptor.

Methods: Adult patients (≥18 years) who underwent a lumbar microdiscectomy from 2014-2021 were retrospectively identified.

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Article Synopsis
  • - This study investigates how patients perceive the appearance and impact of scars after cervical spine surgery, aiming to fill a gap in existing research on surgical outcomes and psychosocial effects.
  • - Researchers conducted a retrospective review of over 800 patients who had surgery between 2017 and 2022, using the SCAR-Q survey to evaluate scar appearance, symptoms, and overall satisfaction.
  • - Findings show that patients unhappy with their surgical results reported significantly poorer scar-related scores, and female patients had more favorable perceptions of scarring than male patients.
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Article Synopsis
  • The study investigates the differing timing of chemoprophylaxis (specifically heparin) in postoperative spine surgery and its relation to the occurrence of venous thromboembolism (VTE) and unplanned reoperations for hematoma.! -
  • It includes a retrospective analysis of 8,704 patients over several years, categorizing them into "immediate" and "delayed" chemoprophylaxis groups based on when their heparin treatment started after surgery.! -
  • Results indicated a low overall rate of VTE (1.13%) and unplanned reoperations (0.62%), and analyses aimed to identify important factors influencing these outcomes based on the different timing of which the chemop
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Objective: The Pfirrmann scoring system classifies lumbosacral disc degeneration based on magnetic resonance imaging signal intensity. The relationship between pre-existing disc degeneration and patient-reported outcome measures (PROMs) after one-level lumbar fusion is not well documented. The purpose of this study was to investigate the relationship between the severity of preoperative intervertebral disc degeneration and preoperative and postoperative PROMs in patients undergoing one-level lumbar fusion.

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Objectives: The purpose of this study is to identify if construct length affects the rate of surgical complications and instrumentation revision following surgical fixation of subaxial and thoracolumbar Type B and C fractures. This study evaluates the effect of ankylosing spondylitis/diffuse idiopathic skeletal hyperostosis (AS/DISH) within this population on outcomes.

Methods: Retrospective review of 91 cervical and 89 thoracolumbar Type B and C fractures.

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Article Synopsis
  • The study is a retrospective comparison of outcomes for lumbar fusion surgeries at various hospital types: an orthopedic specialty hospital, a hybrid community hospital, a conventional community hospital, and a tertiary care hospital.
  • It found that patients at the tertiary care hospital had longer hospital stays and higher readmission rates compared to those at the orthopedic specialty hospital and hybrid community hospital, indicating a potential advantage for specialized care.
  • Overall, the results suggest that orthopedic specialty hospitals may lead to shorter recovery times and better discharge outcomes compared to more conventional hospital settings.
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Study Design: Retrospective Cohort.

Objective: To compare patient-reported outcomes and surgical outcomes after anterior cervical discectomy and fusion (ACDF) versus cervical laminoplasty for multilevel cervical spondylotic myelopathy.

Background: Treatment options for multilevel cervical spondylotic myelopathy include ACDF and cervical laminoplasty.

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Background Context: Prolonged opioid therapy following spine surgery is an ongoing postoperative concern. While prior studies have investigated postoperative opioid use patterns in the elective cervical surgery patient population, to our knowledge, opioid use patterns in patients undergoing surgery for traumatic cervical spine injuries have not been elucidated.

Purpose: The purpose of this study was to compare opioid use and prescription patterns in the postoperative pain management of patients undergoing traumatic and elective cervical spine fusion surgery.

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Objective/background: As value-based care grows in popularity across the United States, more payers have turned toward bundled payment models for surgical procedures. Though episode costs in spine are highly variable, physical therapy (PT) has been identified as a driver of 90-day cost. The goal of this study is to assess the impact of postoperative PT on patient-reported outcomes and cost after lumbar fusion surgery using bundled insurance data.

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Study Design: Retrospective cohort study.

Objective: The purpose of this study is to characterize the relationship between preoperative MCS and surgical outcomes after lumbar spine surgery including inpatient complications, length of stay, readmissions, and reoperations.

Summary Of Background Data: As the prevalence of mental health disorders in the United States increases, it is important to identify risks associated with poor mental health status in the surgical spine patient.

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