Differences in hand movements and task completion times between laparoscopic, robotically assisted, and open surgery:...

Area of Science:

• Surgical techniques
• Medical technology
• Biomechanics

Background:

• Surgical dexterity is crucial for patient outcomes.
• Objective measurement of surgical movements can enhance training and technique.
• Comparing open, standard laparoscopic (SL), and robotically assisted laparoscopic (RAL) surgery is essential for understanding procedural differences.

Purpose of the Study:

• To objectively compare hand movements and task completion times across open, SL, and RAL surgical approaches.
• To analyze the economy and precision of movements in different surgical modalities using electromagnetic motion analysis.

Main Methods:

• A standardized surgical exercise was performed in vitro using open, SL, and RAL techniques.
• Electromagnetic motion analysis was employed to track hand movements.
• Task completion time, number of movements, and duration of movements were recorded for each approach.

Main Results:

• Both SL and RAL approaches took significantly longer to complete than the open approach.
• RAL surgery resulted in a significantly decreased number of movements compared to SL (mean difference = 24 movements, P < 0.006).
• Individual movements in RAL surgery were of longer duration compared to SL (mean difference = 0.13 s, P < 0.001).

Conclusions:

• While RAL surgery takes longer than open surgery, it demonstrates greater precision with fewer, more purposeful movements compared to SL surgery.
• Electromagnetic motion analysis provides objective data on surgical dexterity across different techniques.
• RAL surgery may offer advantages in movement economy despite increased overall task time.