Purpose: This study aimed to identify the characteristics of patients injured by high-rotation cutting tools and the factors related to the severity of their injuries.

Methods: Adult patients (≥18 years), who presented to the emergency department (ED) after a high-rotation cutting tool injury and who were registered in the Korean Emergency Department-based Injury In-depth Surveillance (2011-2018) database, were included. Patients' demographic characteristics, injury-related factors, and Injury Severity Scores were collected. All included cases were categorized into two groups according to the tool that caused the injury: grinder versus nongrinder. The characteristics of the two groups were compared, and the factors associated with the severity of injuries were investigated.

Results: Among 8,697 ED visits, 4,603 patients had been using a grinder and 4,094 had been using a nongrinder tool. The most frequently injured body part while using a grinder was the hand (46.4%), followed by the head (23.0%). While using a nongrinder tool, the most frequently injured body part was also the hand (64.0%), followed by the lower leg (11.4%). The odds of a severe injury were affected by patient age (odds ratio [OR], 1.024; 95% confidence interval [CI], 1.020-1.028) and using a grinder (OR, 2.073; 95% CI, 1.877-2.290). The odds of a severe injury using a grinder were higher in arm injuries (OR, 1.60; 95% CI, 1.40-1.83) and multiple-part injuries (OR, 1.998; 95% CI, 1.639-2.437). The odds of a severe injury using a grinder were lower for head injuries (OR, 0.481; 95% CI, 0.297-0.781).

Conclusions: Injuries from grinders were more likely to affect the head and neck than nongrinder injuries, despite the lower severity. The current lack of regulations on grinders in occupational safety and health standards warrants relevant legislation and the development of applicable safety equipment.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11309212PMC
http://dx.doi.org/10.20408/jti.2021.0057DOI Listing

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Article Synopsis
  • Occupational injuries from high-rotation cutting tools like grinders pose a significant global issue, particularly affecting young male laborers, necessitating improvements in workplace safety.
  • A study at a major trauma center analyzed 127 grinder-related injuries over ten years, revealing an increase in incidents, with upper extremities being the most commonly injured area and a notable number of neurovascular injuries.
  • Among patients with these injuries, a third sustained vascular damage and nearly a quarter experienced nerve injuries, leading to complications and physical disabilities for many, highlighting the need for better prevention and management strategies.
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Purpose: This study aimed to identify the characteristics of patients injured by high-rotation cutting tools and the factors related to the severity of their injuries.

Methods: Adult patients (≥18 years), who presented to the emergency department (ED) after a high-rotation cutting tool injury and who were registered in the Korean Emergency Department-based Injury In-depth Surveillance (2011-2018) database, were included. Patients' demographic characteristics, injury-related factors, and Injury Severity Scores were collected.

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Background: Excessive damage to the endothelial monolayer during corneal trephination may contribute to transplant failure. For this reason, we performed several trephining experiments to determine the influence of various cutting conditions (sharpness, rotation rate, and cutting power) on the endothelial damage in the recipient bed.

Methods: A mechanically guided motor trephine (Mikro-Keratron) was used for cutting experiments in fresh, enucleated porcine eyes.

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