The Research Of The Lower Limb Fatigue And Its Influencing Factors In Transurethral Surgery Of Prostate

Objective:In recent years,with the increasing incidence of BPH in the elderly male population,transurethral prostate surgery has gradually become popular as the gold standard for the treatment of such diseases.The ergonomic issues related to this surgery have become more and more concerned.But most of the research focuses on the neck,shoulders,upper limbs and lower back muscles of the surgeon.And most of the researches are issuing and filling out questionnaires.The research on the lower limb muscles is very limited.The purpose of this study is to use simulation methods to change the position and placement of the pedals,explore the muscle fatigue of the lower limbs and the influencing factors during the operation,and find the most suitable ergonomic surgical posture.Method : Six male urologists from the urology department were selected as subjects.In a simulated surgery environment,the knee and ankle joints of the subjects were exposed at different angles by changing the position of the pedals.And complete a specified number of pedaling actions at a specific frequency(1 time per second)under the above angles.Use the surface electromyograph to collect the original EMG signals from the subject's tibialis anterior muscle and gastrocnemius muscle during the stepping.At the same time,the subjects must complete Mc Gill subjective before and after the test.At the same time,all subjects were instructed to fill out the Mc Gill Subjective Muscle Pain Scale and collect it according to their actual feelings before and after the experiment.Result:Six subjects with knee joints at 75,90,and 120 degrees,500 steps eachin accordance with screen instructions at a specific frequency.According to the original EMG data collected in the experiment,when the knee joint was 120 degrees,the lower limb muscle EMG signal was the smallest and the lower limb muscles suffered the least fatigue;when the knee joint was 75 degrees,the lower limb muscle fatigue was the highest(P ?0.05).And then,based on the knee joint being 120 degrees,we conducted further experiments.We performed the stepping experiment again by placing the pedal at 30 degrees and 45 degrees with the ground.According to the original EMG data,when the pedal is at 30 degrees to the ground,the muscle fatigue of the lower limbs is the lowest(P ?0.05).At the same time,we instructed all subjects to complete the Mc Gill Subjective Muscle Pain Scale before and after the experiments.All the scales were collected and the scores were summarized and analyzed.It can be seen that the muscle fatigue of subjects after each experiment was significantly increased compared with that before the experiment.When the knee joint is 120 degrees,the subjective feeling of muscle fatigue is the lightest and strongest when knee is 75 degrees(P ?0.05)in the first phase of the experiment.In further experiments,the subject's feeling of muscle fatigue was the lightest when subjecting the knee to 120 degrees and the pedal to the ground at 30 degrees(P ?0.05).Conclusion:Prolonged inappropriate posture and pedalling during transurethral prostate surgery is the main cause of lower limb muscle fatigue;At the same time,the comfortable position of the pedal,that is,the pedal is 30 degrees from the ground,and the knee joint is 120 degrees.This distance between the pedal and the surgeon's feet when trampling can minimize the surgeon's lower limb fatigue.