Free-Viewpoint Video in Open Surgery: Development of Surgical Arena 360

OBJECTIVE

We aimed to apply the free-viewpoint video technology developed and introduced mainly for sports spectators to an open surgical video recording system.

DESIGN

Prospective feasibility study.

SETTING

University of Tsukuba Hospital, Ibaraki, Japan.

PARTICIPANTS

Patients who underwent open pancreaticoduodenectomy for pancreatic cancer between December 2022 and March 2023 were included. The gastrojejunal anastomosis was the subject of the recording.

RESULTS

Four surgeries were recorded with Surgical Arena 360, which is the free-viewpoint video system that we developed. The feasibility of performing a series of surgical procedures without interrupting the surgeon's line of sight or manipulation was demonstrated in all cases.

CONCLUSIONS

Our study revealed that Surgical Arena 360, an open surgical video recording system developed by applying free-viewpoint video technology, can provide new insights into surgical support and clinical knowledge to surgeons by enabling secure capture of the open surgical field from multiple angles.

Standardized digital solution with surgical procedure manager (SPM®)-an opportunity for maximizing patient safety and efficiency in ileostomy reversal?

Background

Standardization and digitalization are getting more and more essential in surgery. Surgical procedure manager (SPM®) is a freestanding computer serving as a digital supporter in the operating room. SPM® navigates step-by-step through surgery by providing a checklist for each individual step.

Methods

This was a single center, retrospective study at the Department for General and Visceral Surgery at Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin. Patients who underwent ileostomy reversal without SPM® in the period of January 2017 until December 2017 were compared to patients who were operated with SPM® in the period of June 2018 until July 2020. Explorative analysis and multiple logistic regression were performed.

Results

Overall, 214 patients underwent ileostomy reversal: 95 patients without SPM® vs. 119 patients with SPM®. Ileostomy reversal was performed by head of department/attendings in 34.1%, by fellows in 28.5% and by residents in 37.4%; p = 0.91. Postoperative intraabdominal abscess emerged more often in patients without SPM®: ten (10.5%) patients vs. four (3.4%) patients; p = 0.035. Multiple logistic regression showed a risk reduction for intraabdominal abscess {Odds ratio (OR) 0.19 [95% confidence interval (CI) 0.05-0.71]; p = 0.014} and for bowel perforation [OR 0.09 (95% CI 0.01-0.93); p = 0.043] in the group with use of SPM® in ileostomy reversal.

Conclusions

SPM® may reduce postoperative complications in ileostomy reversal such as intraabdominal abscess and bowel perforation. SPM® may contribute to patient safety.

Current Implementation Outcomes of Digital Surgical Simulation in Low- and Middle-Income Countries: Scoping Review

BACKGROUND

Digital surgical simulation and telecommunication provides an attractive option for improving surgical skills, widening access to training, and improving patient outcomes; however, it is unclear whether sufficient simulations and telecommunications are accessible, effective, or feasible in low- and middle-income countries (LMICs).

OBJECTIVE

This study aims to determine which types of surgical simulation tools have been most widely used in LMICs, how surgical simulation technology is being implemented, and what the outcomes of these efforts have been. We also offer recommendations for the future development of digital surgical simulation implementation in LMICs.

METHODS

We searched PubMed, MEDLINE, Embase, Web of Science, Cochrane Database of Systematic Reviews, and the Central Register of Controlled Trials to look for qualitative studies in published literature discussing implementation and outcomes of surgical simulation training in LMICs. Eligible papers involved surgical trainees or practitioners who were based in LMICs. Papers that include allied health care professionals involved in task sharing were excluded. We focused specifically on digital surgical innovations and excluded flipped classroom models and 3D models. Implementation outcome had to be reported according to Proctor's taxonomy.

RESULTS

This scoping review examined the outcomes of digital surgical simulation implementation in LMICs for 7 papers. The majority of participants were medical students and residents who were identified as male. Participants rated surgical simulators and telecommunications devices highly for acceptability and usefulness, and they believed that the simulators increased their anatomical and procedural knowledge. However, limitations such as image distortion, excessive light exposure, and video stream latency were frequently reported. Depending on the product, the implementation cost varied between US $25 and US $6990. Penetration and sustainability are understudied implementation outcomes, as all papers lacked long-term monitoring of the digital surgical simulations. Most authors are from high-income countries, suggesting that innovations are being proposed without a clear understanding of how they can be incorporated into surgeons' practical training. Overall, the study indicates that digital surgical simulation is a promising tool for medical education in LMICs; however, additional research is required to address some of the limitations in order to achieve successful implementation, unless scaling efforts prove futile.

CONCLUSIONS

This study indicates that digital surgical simulation is a promising tool for medical education in LMICs, but further research is necessary to address some of the limitations and ensure successful implementation. We urge more consistent reporting and understanding of implementation of science approaches in the development of digital surgical tools, as this is the critical factor that will determine whether we are able to meet the 2030 goals for surgical training in LMICs. Sustainability of implemented digital surgical tools is a pain point that must be focused on if we are to deliver digital surgical simulation tools to the populations that demand them the most.

The Ethical Digital Surgeon

This viewpoint explores the ethical and regulatory consequences of the digital transformation of the operating room. Surgical robotics is undergoing significant change and future advances will center around the capture and use of data. The consequences of creating this surgical data pipeline must be understood and digital surgical systems must prioritize the safeguarding of patient data. Moreover, data protection laws and frameworks must adapt to the changing nature of surgical data. Finally, digital surgeons must understand changing data legislation and best practice on data governance to act as guardians not only for their own but also for their patients’ data.

[Anatomy of the deep circumflex iliac artery perforators and reconstruction of complex mandibular defects with chimeric deep circumflex iliac artery perforator flap]

OBJECTIVE

To investigate the anatomy of the perforator vessels of the deep circumflex iliac artery (DCIA) and the techniques for repairing mandibular complex defect using chimeric deep circumflex iliac artery perforator flap (DCIAPF).

OBJECTIVE

We analyzed the origin, distribution, number and courses of the perforator vessels of the DCIA, and measured the outside diameters of the vessels at the origin in 6 adult cadaveric specimens (12 sides) with latex perfusion. From July, 2018 to September, 2019, based on the results of anatomical study and imaging findings and using the digital surgical guide plate, we harvested DCIAPF from 4 patients for repairing mandibular body or angle defects and oral soft tissue defects.

OBJECTIVE

The perforating vessels of the DCIA included abdominal muscular branches, osteomusculocutaneous branches and terminal musculocutaneous branches. The abdominal muscle branches originated from the DCIA inguinal segment in 4 and from both the inguinal and iliac segments in 2 of the specimens. The osteomusculocutaneous branches all originated from the internal iliac crest in 75% and from both the inguinal and internal iliac crest segments in 25% of cases; the inguinal segment gave rise to only one perforating branch. The number of the musculocutaneous perforating branches was 1 (58.3%) or 2 (41.7%). In the 4 patients undergoing mandibular reconstruction, the DCIAPF survived in all cases with good recovery of the donor site wound. Satisfactory facial appearance with good oral morphology and occlusal relationship was achieved at 1 month postoperatively in all the patients. None of the patients experienced obvious functional abnormalities at the donor site, and imaging examination confirmed successful reconstruction of the oromandibular defects in all the cases.

OBJECTIVE

A good understanding of the anatomic characteristics of the perforator vessels of the DCIA combined with imaging examinations and digital surgery technology facilitates the harvest of DCIAPF for repairing mandibular body or angle defects complicated by oral soft tissue defects.

Investigating the Ethical and Data Governance Issues of Artificial Intelligence in Surgery: Protocol for a Delphi Study

BACKGROUND

The rapid uptake of digital technology into the operating room has the potential to improve patient outcomes, increase efficiency of the use of operating rooms, and allow surgeons to progress quickly up learning curves. These technologies are, however, dependent on huge amounts of data, and the consequences of their mismanagement are significant. While the field of artificial intelligence ethics is able to provide a broad framework for those designing and implementing these technologies into the operating room, there is a need to determine and address the ethical and data governance challenges of using digital technology in this unique environment.

OBJECTIVE

The objectives of this study are to define the term digital surgery and gain expert consensus on the key ethical and data governance issues, barriers, and future research goals of the use of artificial intelligence in surgery.

METHODS

Experts from the fields of surgery, ethics and law, policy, artificial intelligence, and industry will be invited to participate in a 4-round consensus Delphi exercise. In the first round, participants will supply free-text responses across 4 key domains: ethics, data governance, barriers, and future research goals. They will also be asked to provide their understanding of the term digital surgery. In subsequent rounds, statements will be grouped, and participants will be asked to rate the importance of each issue on a 9-point Likert scale ranging from 1 (not at all important) to 9 (critically important). Consensus is defined a priori as a score of 7 to 9 by 70% of respondents and 1 to 3 by less than 30% of respondents. A final online meeting round will be held to discuss inclusion of statements and draft a consensus document.

RESULTS

Full ethical approval has been obtained for the study by the local research ethics committee at Imperial College, London (20IC6136). We anticipate round 1 to commence in January 2021.

CONCLUSIONS

The results of this study will define the term digital surgery, identify the key issues and barriers, and shape future research in this area.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

PRR1-10.2196/26552.

Choosing the new normal for surgical education using alternative platforms

The traditional methods for surgical education and professional development are changing, from a variety of external factors. The COVID-19 pandemic accelerated the pace innovative alternative tools are introduced into clinical practice, creating a new normal for teaching and training. In this new normal is the challenge to create durable changes for the future of surgical education. Social media (SoMe), a tool that uses electronic communications and applications to allow users create and share information in dynamic ways, can meet this challenge. SoMe is reshaping how we communicate and learn, and offers great benefits for effective, individualized surgical education. The limits for SoMe appear endless, and elements have already help establish digital surgery to help improve the precision and outcomes of surgery. As we work to define the new normal in surgical education and professional development, SoMe digital surgery will be critical for continued growth and progress.

Comparison of Changes in the Condylar Volume and Morphology in Skeletal Class III Deformities Undergoing Orthognathic Surgery Using a Customized versus Conventional Miniplate: A Retrospective Analysis

With the great leap in the development of three-dimensional computer-assisted surgical technology, surgeons can use a variety of assistive methods to achieve better results and evaluate surgical outcomes in detail. This retrospective study aimed to evaluate the postoperative stability after bilateral sagittal split ramus osteotomy by volume rendering methods and to evaluate how postoperative stability differs depending on the type of surgical plate. Of the patients who underwent BSSRO, ten patients in each group (non-customized miniplate and customized miniplate) who met the inclusion criteria were selected. Preoperative and postoperative cone-beam computed tomography data were collected, and condylar morphological and landmark measurements were obtained using Checkpoint and OnDemand software, respectively. The postoperative condylar morphological dataset revealed no significant difference (p > 0.05) between the two groups. No significant difference (p > 0.05) was observed between the two groups in horizontal, vertical, or angular landmark measurements used to quantify operational stability. These results indicate that there is no difference in the surgical outcome between the patient-specific system and the conventional method, which will allow clinicians to take advantage of the patient-specific system for this surgical procedure, with favorable results, as with the conventional method.

Expert Consensus for the Treatment Algorithm for Navigationassisted Reconstruction of Maxillofacial Deformities

Deformities of the maxillofacial region following trauma and ablative surgery are devastating and not uncommon. Reconstruction of such defects is a surgically challenging procedure. Conventionally, reconstruction of dental arch defects lacks preoperative customised planning and relies heavily on the surgeon experience to ensure optimum surgical outcomes. The restoration of the dental arch shape and function has taken precedence after an extensive tumour resection surgery, especially in the current age of technological advancement. Thus, personalised and accurate reconstruction of dental arch defects has become a new goal. Computer-assisted surgery, especially navigation-assisted surgery, has gained popularity of late, in reconstructing deformities and restoring facial symmetry, appearance and function in the maxillofacial region. This technology provides a clearer three-dimensional visualisation of the area of interest and its relationship with the adjacent vital structures. Together with preoperative virtual surgical planning, it allows more specific and accurate osteotomies, thus reducing the ischemia and total operating times substantially. The risk of complications is also minimised whilst improving the final surgical outcomes. The use of the intraoperative navigation system and other computer-assisted surgical techniques during surgery can significantly improve the precision of the reconstruction of dental arch deformities, and achieve personalised and functional reconstructive goals while enhancing the quality of life of patients postoperatively. The Society of Oral and Maxillofacial Surgery, Chinese Stomatological Association provides the present professional perspective and treatment protocol for navigation-guided reconstruction of dental arch defects, to allow standardisation of the technique while promoting its application among oral and maxillofacial surgeons.

A modified technique for flexor-to-extensor tendon transfer to correct residual metatarsophalangeal extension in the treatment of hammertoes

A variety of surgical procedures exist for the correction of hammertoe deformities, and several different methods of flexor tendon transfer have been described for the correction of hammertoes associated with extension contracture of the corresponding metatarsophalangeal joint. In the present report, we have described a variation of flexor tendon tenodesis we have found useful.