Feasibility of ovine and synthetic temporal bone models for simulation training in endoscopic ear surgery

Okhovat, Saleh; Milner, Thomas D.; Iyer, Arunachalam

doi:10.1017/s0022215119002135

Cited by 7 publications

(24 citation statements)

References 16 publications

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“…At present, the hours spent by trainees and residents participating in endoscopic ear surgery are limited, preventing them from acquiring sufficient training and relevant endoscopic skills. 1 Although the principles and steps of ear surgery are similar to those of endoscopic and microscopic approaches, the skills required for hand-eye co-ordination and single-hand manipulation of instruments are different. For instance, the endoscopic approach requires proper use of the endoscope, prompting every trainee to be versatile in using it.…”

Section: Discussionmentioning

confidence: 99%

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Training in endoscopic ear surgery using the papaya petiole

Narendrakumar

2021

J. Laryngol. Otol.

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Background Endoscopic ear surgery is a game changer in the field of otology. Training in endoscopic skills is essential for ENT residents, and is especially important during the coronavirus disease 2019 lockdown period. In such difficult times, ENT residents and surgeons can undergo hands-on training using a papaya petiole, even within their homes. Objective Endoscopic ear surgery training can be carried out using a papaya petiole, enabling the practice of grommet insertion, tympanomeatal flap elevation and foreign body removal from the external auditory canal. This model does not need any laboratory setup. Results and conclusion The hollow structure of the papaya petiole model is very similar to that of the external auditory canal, making training in endoscopic ear surgery easy. Use of the model helps a beginner to train in endoscopic handling and microsurgical instrumentation, and improves depth perception. In addition, it does not require high-end facilities to store equipment or undertake the training at any given point in time.

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Section: Discussionmentioning

confidence: 99%

“…Surgeons can achieve this training utilising various methods, such as cadaveric temporal bone dissection (the 'gold standard' method), animal models, mannequins, synthetic temporal bone models and virtual reality simulators. 1 There are many pros and cons associated with each method. Cadaveric dissection is one of the best approaches.…”

Section: Introductionmentioning

confidence: 99%

Training in endoscopic ear surgery using the papaya petiole

Narendrakumar

2021

J. Laryngol. Otol.

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“…Okhovat et al compared the feasibility of endoscopic transcanal tympanoplasty on the ovine model and synthetic temporal bone, showing how the first was a significantly more realistic simulation tool than the latter [ 10 ].…”

Section: Ovine Model For Endoscopic Ear Surgery Trainingmentioning

confidence: 99%

“…In particular, the ex vivo ovine model showed its utility in endoscopic ear surgery [ 7 , 8 , 9 , 10 ], on orbital procedures [ 11 , 12 ], on parotid gland surgery, and in facial nerve reconstruction/reanimation [ 13 , 14 ]. In addition, it is also used in open laryngeal and tracheal surgery training [ 15 , 16 , 17 ], in microlaryngeal surgery, and lastly, to simulate several pediatric procedures [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Surgical Training on Ex Vivo Ovine Model in Otolaryngology Head and Neck Surgery: A Comprehensive Review

Fermi

Chiari

Mattioli

et al. 2022

IJERPH

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Background: Nowadays, head and neck surgical approaches need an increased level of anatomical knowledge and practical skills; therefore, the related learning curve is both flat and long. On such procedures, surgeons must decrease operating time as much as possible to reduce the time of general anesthesia and related stress factors for patients. Consequently, little time can be dedicated for training skills of students and young residents in the operating theater. Fresh human cadavers offer the most obvious surrogate for living patients, but they have several limitations, such as cost, availability, and local regulations. Recently, the feasibility of using ex vivo animal models, in particular ovine ones, have been considered as high-fidelity alternatives to cadaveric specimens. Methods: This comprehensive review explores all of head and neck otolaryngology applications with this sample. We analyzed studies about ear surgery, orbital procedures, parotid gland and facial nerve reanimation, open laryngeal and tracheal surgery, microlaryngoscopy procedures, laryngotracheal stenosis treatment, and diagnostic/operative pediatric endoscopy. For each different procedure, we underline the main applications, similarities, and limitations to human procedures so as to improve the knowledge of this model as a useful tool for surgical training. Results: An ovine model is easily available and relatively inexpensive, it has no limitations associated with religious or animal ethical issues, and it is reliable for head and neck surgery due to similar consistencies tissues and neurovascular structures with respect to humans. However, some other issues should be considered, such as differences about some anatomical features, the risk of zoonotic diseases, and the absence of bleeding during training. Conclusion: This comprehensive review highlights the potentials of an ex vivo ovine model and aims to stimulate the scientific and academic community to further develop it for other applications in surgical education.

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“…An ovine (sheep) model has been developed and used in endoscopic ear surgery education as an economically viable way of offering high-fidelity simulation of tissue similar to that of humans. 9 , 10 , 11 , 12 The favorable comparative anatomy has been described in detail. 13 Currently in our center, due to infection control and animal use practices, we are not able to use the ovine model.…”

Section: Introductionmentioning

confidence: 99%

Use of a Caprine Model for Simulation and Training of Endoscopic Ear surgery

Kwinter¹,

Chayaopas²,

Ma³

et al. 2023

Int Adv Otol

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Background: The objective of this study was to evaluate the utility of a caprine model in endoscopic ear surgical education using the index procedures of tympanoplasty and ossiculoplasty. Specifically, this study assessed the face and content validity of the caprine model, and the potential impact of anatomical differences on trainee understanding of human middle ear anatomy. Methods: Twelve otolaryngology trainees attended a 3-hour endoscopic ear surgery course utilizing the caprine model in which they completed canalplasty, tympanoplasty, and ossiculoplasty. Prior to the course, the trainees completed a self-reported needs assessment and knowledge assessment of human middle ear anatomy. Following the course, the trainees repeated the knowledge assessment and completed evaluation and validation questionnaires. Five-point Likert scores were used for the needs assessment and validation questionnaire. Results: Of the 12 trainees, 9 participated in the study. All domains of the learner needs assessment showed an average improvement of 1 point on the post-course evaluation with 6 of 9 domains being significantly improved using the Wilcoxon signed-rank test ( P < .05). The model achieved validation in the domains of face, content, and global content validity with an average Likert score > 4. Knowledge assessment scores increased by 7% ( P = .23) after the course compared to before. Conclusion: The caprine model offers an effective surgical simulation model for endoscopic ear surgery training with good face and content validity. We find it to be readily available and affordable. We currently use it routinely to give otolaryngology residents the experience of endoscopic ear surgery before operating on patients.

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Feasibility of ovine and synthetic temporal bone models for simulation training in endoscopic ear surgery

Cited by 7 publications

References 16 publications

Training in endoscopic ear surgery using the papaya petiole

Training in endoscopic ear surgery using the papaya petiole

Surgical Training on Ex Vivo Ovine Model in Otolaryngology Head and Neck Surgery: A Comprehensive Review

Use of a Caprine Model for Simulation and Training of Endoscopic Ear surgery

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