# Fractures at United Rentals (North America), Inc.
> OSHA SIR `2019076650` · 7/2/2019 · HUNTSVILLE, ALABAMA
## Severity
- **1 hospitalization**
- **Body part:** Upper arm(s)
- **Nature of injury:** Fractures
## Cause
- **Event:** Ran off driving surface, nonroadway
- **Source:** Aerial lifts, scissor lifts-except truck-mounted
- **Secondary source:** Trailers
## Employer
- **Name:** United Rentals (North America), Inc.
- **Location:** 376 NW Dan Tibbs Road, HUNTSVILLE, ALABAMA, 35806
- **NAICS:** 532490
- **Jurisdiction:** 1
## Narrative

An employee was unloading a portable boom lift by driving it from a trailer onto a portable loading ramp. The forward wheel base of the boom pushed the trailer forward and the boom dropped about 18 inches; the employee's right upper arm struck the upper guardrail and was broken.

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*Source: [OSHA Severe Injury Reports](https://www.osha.gov/severe-injury-reports) · MORVS · CC0 1.0*