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Orthopaedic injuries from snowmobile accidents: a multi-centre analysis of demographics, injury patterns, and
Paul Whiting1, Christopher Rice2, Alexander Siy2
1Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Avenue, Madison, WI, 53705, USA. whiting@ortho.wisc.edu.
Purpose:
More than 2 million people in North America use snowmobiles, resulting in an estimated 200 fatalities and 14,000 injuries annually. The purpose of this study is to document the demographics, orthopaedic injury patterns, and short-term outcomes of patients with snowmobile-related injuries.
Materials And Methods:
A retrospective review was performed at two regional trauma centres in a region where snowmobile use is prevalent. Patients who sustained snowmobile-related injuries over a 12-year period were identified from the hospitals' trauma registries using E-codes (E820-E820.9). Patient demographics were recorded, as were injury characteristics including rates of substance use, open fractures, Injury Severity Score (ISS), Abbreviated Injury Score (AIS) for the extremities, and mortality. Rates of inpatient surgery, as well as hospital and ICU length of stay (LOS), were also recorded.
Results:
We identified 528 patients with snowmobile-related injuries. Average age was 37 years, and 418 patients (79%) were male. Eighty-eight per cent of all patients with snowmobile injuries were admitted to the hospital with an average LOS of 5.7 days. Among those admitted to the hospital, average ISS was 12.3, and 28% of these patients had ISS > 15. A total of 261 patients (56%) suffered extremity injuries (including 163 upper and 173 lower extremity fractures) with an average extremity AIS of 2.4. There were 700 total fractures (1.5 per patient), and 9% of all fractures were open. A total of 208 patients (45%) suffered head injuries, and 132 patients (28%) sustained vertebral column fractures. A total of 201 patients (43%) required inpatient surgery, and eight patients (1.7%) sustained fatal injuries.
Conclusions:
We present a detailed multi-centre analysis of orthopaedic injury patterns and outcomes resulting from snowmobile-related injuries. Patients injured while snowmobiling share similar injury patterns with patients injured in motorcycle and other high-energy motor vehicle accidents.
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