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Cast saw noise does not reach occupational hazard levels
Joel M Post1, Kyle D Switzer, David K Brown
1McLaren Orthopedic Hospital, Lansing, MI, USA.
Journal of Pediatric Orthopedics
|June 12, 2013
Summary
Cast saw noise levels were measured, with the Quiet Cast Removal System (QCR) being significantly quieter than Stryker models. While not exceeding occupational hazard levels, noise reduction methods may be beneficial.
Area of Science:
- Orthopaedic Surgery
- Audiology
- Occupational Health
Background:
- Cast saws generate significant noise in orthopaedic clinics.
- Noise-induced hearing loss is a potential risk for patients and staff.
- Evaluating cast saw noise levels is crucial for safety recommendations.
Purpose of the Study:
- To measure and compare the sound levels of commercially available cast saws.
- To assess if cast saw noise exceeds everyday sound levels or safety standards.
- To determine the necessity of mandatory hearing protection for cast saw use.
Main Methods:
- Sound levels of the QCR, Stryker 986, and Stryker 840 cast saws were measured.
- Measurements were taken at the source and at 6, 12, and 36 inches.
- Sound intensity was assessed during operation alone and while cutting casts.
Main Results:
- The QCR system produced significantly lower sound levels (e.g., 50.1 dBA at 36 inches) compared to Stryker saws (e.g., 90.7 dBA at 36 inches).
- All tested saws operated below recommended single exposure limits and occupational hazard levels.
- Statistically significant differences in noise levels were found between the QCR and Stryker saws (P<0.0001).
Conclusions:
- Commercially available cast saws do not reach occupational hazard levels.
- The QCR saw is demonstrably quieter than the Stryker 840 and 986 models.
- While not mandatory, implementing noise reduction strategies for cast saws may be advisable.
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