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Philipps-Universität Marburg
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Abstract
The aim of this study was to evaluate the effect of training on the performance outcome
with the da Vinci Skills Simulator by representing learning curves. Following the question
of investigation of a structured training program for robotic surgical skills for robotic
novices, this study focused on the da Vinci Skills Simulator known as an effective training
tool for the acquisition of proficiency level.
The present prospective study was conducted from January to December 2013 In the department of otorhinolaryngology, Philipps Universität Marburg and included 40 participants.
Students and robotic novices were equally distributed into two groups for a fourweek
training curriculum. By getting a short briefing in using the da Vinci Skills Simulator
one group performed four training sessions on day 1, 8, 15 and 22 of three consecutive
repetitions of five exercises (Match Board I, Match Board II, Match Board III, Ring &
Rail I, Ring & Rail II) and a final unpracticed exercise (Needle Control). The second
group started by receiving the same briefing on day 1 and finished on day 22 (without
day 8 and 15) with the final exercise (Needle Control). After each completed repetition,
data was analyzed for the parameters time to complete exercise, economy of motion, excessive
instrument force, instruments out of view, collisions and drops summarized to a
calculated overall score by the system. Furthermore, the participants in group one were
additionally distributed into three groups depending on their day-overall score of each
exercise in order to investigate their learning progress.
The results showed a skills gain in overall performance on the first and second day in
group one in nearly all parameters. Considering higher overall scores in group one due
to a shorter rate of repetitions compared to group two, group one has been shown stagnation
in Ring & Rail I and Match Board II in the parameters time to complete exercise,
economy of motion, excessive instrument force and instruments out of view on day 2. Two
days of training seem to be the best practice for exercises classified as very easy (Ring &
Rail I) and easy (Match Board I) in this study. More repetitions in group one were needed
for Match Board III and Ring & Rail II to reduce fatal errors such as collisions, excessive
instrument force and instruments out of view by achieving overall scores >80%. Match
Board II and Ring & Rail II, classified as exercises with a high difficulty level presented
the strongest learning curves though showing the lowest parameters and overall scores.
The rate of repetitions impairing the training of motorial skills, leads to internal learning
curves and approximation of the test persons’ level. The level of difficulty was also reflected
in the latency of approximation of the participants which could be seen as well in
easy exercises (Ring & Rail I, Match Board I) on day 8, in medium (Match Board II)
exercises on day 15 and in difficult exercises (Match Board III, Ring & Rail II) on day
22. Match board III and Ring & Rail II classified as difficult exercises presented the
strongest learning curves although showing the nearly lowest parameters and overall
score on the first day. Concerning exercises of a medium and high difficulty level, training
experiences gained by performing each of the five exercises on one day, shorter training
breaks of more than one but less than seven days and also unless seven repetitions of
each exercise could be presumed. The parameter drop could be useful to measure the
concentration of a test person. Group two as a control group came up with a lower increase
of parameter levels and overall score outcome on day 2. There were significant
differences in time to complete exercises, economy of motion and missed targets but no
significant differences in overall score towards group one in the exercise Needle Control.
Finally concluding the data of this study, it refers the da Vinci Skills Simulator led to an
improvement in technical performance of robotic novices. This curriculum shows an important
role relying more on repetitions than on long time distances in between the training
sessions as an effective method for regaining fine motor skills in all exercise as well
as for novice being skilled or less skilled in the first place.
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Dates
Created: 2018Issued: 2018-06-26Updated: 2018-06-26
Faculty
Medizin
Publisher
Philipps-Universität Marburg
Language
ger
Data types
DoctoralThesis
DFG-subjects
Overall ScoreLernkurvenLearning CurveRoboter TrainingDaVinci Skills Simulator
DDC-Numbers
610
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Förtsch, Arne: Charakterisierung von Lernkurven am Da Vinci Skills Simulator. : Philipps-Universität Marburg 2018-06-26. DOI: https://doi.org/10.17192/z2018.0283.