Comparison of microsuspension laryngoscopy positions: a randomized, prospective study

Area of Science:

• Surgical ergonomics
• Musculoskeletal health in surgery

Background:

• Microlaryngeal surgery (MLS) can lead to surgeon discomfort and potential musculoskeletal injuries.
• Optimizing ergonomic positions is crucial for surgeon well-being and sustained surgical performance.

Purpose of the Study:

• To assess muscle fatigue and pain in surgeons performing MLS.
• To compare outcomes between standardized favorable and unfavorable ergonomic positions.

Main Methods:

• An individual randomized counterbalanced design was employed.
• Electromyographic (EMG) sensors monitored muscle activity in 18 otolaryngology residents/fellows during simulated MLS tasks.
• Participants reported muscle discomfort using standardized surveys.

Main Results:

• The favorable ergonomic position resulted in reduced muscle fatigue and self-reported pain.
• Significantly lower muscle activation (P=0.025) and pain (P<0.05) were observed in the lower trapezius muscle in the favorable position.
• Productivity was also improved in the favorable position.

Conclusions:

• This study provides the first electromyographic evidence linking favorable ergonomic positions to decreased muscle activation and fatigue during MLS.
• The findings suggest that adopting optimal ergonomic setups can help surgeons mitigate the risk of musculoskeletal injuries.
• Improved ergonomics may enhance surgeon comfort and potentially long-term career sustainability.