A team from California, USA, sought to test whether performing complex tasks require greater muscle effort when using laparoscopic instruments, compared with open surgical instruments.
The team recruited 21 surgeons who volunteered to participate in the study.
|Body part discomfort scores were higher during laparoscopic knot-tying.|
|Archives of Surgery|
The surgeons performed knot tying during 90 seconds; first using a laparoscopic technique and then using an open technique.
The research team measured the mean and peak surface electromyographic (EMG) signals collected from the thenar compartment, the flexor digitorum superficialis, and the deltoid muscles of the dominant arm.
They found that compared to open knot-tying, laparoscopic tasks resulted in higher EMG amplitudes in all 3 muscles, and higher peak EMG in the thumb and deltoid muscles.
In addition, body part discomfort scores were significantly higher during laparoscopic knot-tying for both the forearm flexor and deltoid muscles.
Dr Ramon Berguer's team concluded, "Complex manipulative tasks using laparoscopic techniques require substantially higher upper-extremity muscle effort compared with open surgical techniques".