Drilling simulated temporal bones with left-handed tools: a left-hander's right?

Area of Science:

• Surgical Education
• Medical Device Design
• Hand Dominance in Medicine

Background:

• Surgical training environments often exhibit a right-handed bias, potentially disadvantaging left-handed trainees.
• The effectiveness of specialized surgical tools for left-handed individuals is an area requiring further investigation.

Purpose of the Study:

• To compare the effectiveness of left-handed otologic drills versus conventional right-handed drills for left-handed surgical trainees.
• To evaluate the impact of dominant-hand-specific tools on surgical skill acquisition.

Main Methods:

• A randomized controlled trial involving novice medical students (left- and right-handed) and experienced left-handed surgeons.
• Performance was assessed across pretest, skill acquisition, and post-test phases using expert evaluation and product analysis.
• Comparison groups included left-handed trainees using left-handed drills, left-handed trainees using right-handed drills, and right-handed trainees using right-handed drills.

Main Results:

• Left-handed trainees using left-handed drills and right-handed trainees using right-handed drills significantly outperformed left-handed trainees using right-handed drills.
• All participant groups showed performance improvement with practice.
• Assessment tools demonstrated construct validity.

Conclusions:

• Left-handed trainees exhibit superior bone drilling learning with tools designed for their dominant hand.
• The integration of left-handed surgical drills into residency programs is recommended for improved technical skill development.
• Further research is needed to explore skill transferability between left- and right-handed drills.