# SLIP OR FALL OF PERSON
> MSHA accident `220170480010` · 02/09/2017 · Martin Marietta Materials, Inc.
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall to the walkway or working surface
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** DISLOCATION
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 4.54 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials, Inc.
- **Mine:** [3401651](https://api.ai-analytics.org/mine/3401651)
## Narrative

EE working on 992C Loader in shop. EE removed the Shut-Off Solenoid from RR of loader; it dropped to the floor.  EE descended loader to pick up the part. EE slightly bent knees & bent over at waist to pick up part when ee felt a pop & pain right knee; ee then fell to the floor holding the knee.  EE suffered a Transient Patella Dislocation (small knee cap dislocation).  

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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*