# Amputations, avulsions, enucleations  unspecified at USDA ARS MWA US Dairy Forage Research Center
> OSHA SIR `2025032384` · 3/13/2025 · PRAIRIE DU SAC, WISCONSIN
## Severity
- **1 amputation**
- **Body part:** Finger or thumb tip(s), nail(s)
- **Nature of injury:** Amputations, avulsions, enucleations  unspecified
## Cause
- **Event:** Caught or wedged between objects  nonrunning
- **Source:** Vehicle trailers, trailing units
- **Secondary source:** Trucks  unspecified
## Employer
- **Name:** USDA ARS MWA US Dairy Forage Research Center
- **Location:** S8822 Sunset Dr, PRAIRIE DU SAC, WISCONSIN, 53578
- **NAICS:** 541715
- **Jurisdiction:** 1
## Narrative

An employee was orienting a truck to align a ball socket with a trailer hitch. The employee moved the tongue in an attempt to shift the trailer coupler and allow it to drop onto the hitch ball mount. This caused the coupler to move and descend on the ball. The three middle fingers of the employee's left hand were caught between the trailer coupler and the ball hitch, and the three fingertips were crushed and partially amputated.

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