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KMID : 1207720190110020170
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Clinics in Orthopedic Surgery
2019 Volume.11 No. 2 p.170 ~ p.175
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Spinal Navigation during Orthopedic Residency Training: A Double-Edged Sword?
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Kaliya-Perumal Arun-Kumar
Soh Tamara
Tan Mark
Nolan Colum Patrick
Yu Chun Sing
Oh Jacob Yoong-Leong
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Abstract
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Background: Orthopedic residents in our institute have the opportunity to participate in navigation-assisted spine surgery during their residency training. This paves the way for a new dimension of learning spine surgery, which the previous generation was not exposed to. To study this in detail, we conducted a cross-sectional descriptive survey among our residents to analyse their perception, understanding, and competency regarding pedicle screw application using spinal navigation.
Methods: We selected orthopedic residents (n = 20) who had completed 3 years of training that included at least one rotation (4?6 months) in our spine division. They were asked to respond to a four-part questionnaire that included general and Likert scale-based questions. The first two parts dealt with various parameters regarding spinal navigation and free-hand technique for applying pedicle screws. The third part dealt with residents' opinion regarding the advantages and disadvantages of spinal navigation. The final part was an objective analysis of residents' ability to identify the pedicle screw entry points in selected segments.
Results: We found that our residents were better trained to apply pedicle screws using spinal navigation. The mean Likert scale score for perception regarding their competency to apply pedicle screws using spinal navigation was 3.65 ± 0.81, compared to only 2.8 ± 0.77 when using the free-hand technique. All residents agreed that spinal navigation is an excellent teaching tool with higher accuracy and greater utility in anatomically critical cases. However, 35% of the residents were not able to identify the entry points correctly in the given segments.
Conclusions: All selected residents were perceived to be competent to apply pedicle screws using spinal navigation. However, some of them were not able to identify the entry points correctly, probably due to overreliance on spinal navigation. Therefore, we encourage residents to concentrate on surface anatomy and tactile feedback rather than completely relying on the navigation display monitor during every screw placement. In addition, incorporating cadaveric and saw bone workshops as a part of teaching program can enhance better understanding of surgical anatomy.
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KEYWORD
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Computer-assisted surgery, Internship and residency, Neuronavigation, Pedicle screws, Spine
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