Surgical robotic applications in otolaryngology

The effect of soft palate reconstruction with the da Vinci robot on middle ear function in children: an observational study

Cleft palate is associated with a high prevalence of middle ear dysfunction, even after palatal repair. The aim of this study was to evaluate the effects of robot-enhanced soft palate closure on middle ear functioning. This retrospective study compared two patient groups after soft palate closure with a modified Furlow double-opposing Z-palatoplasty technique. Dissection of the palatal musculature was performed using a da Vinci robot in one group and manually in the other. Outcome parameters were otitis media with effusion (OME), tympanostomy tube use, and hearing loss during 2 years of follow-up. At 2 years post-surgery, the percentage of children with OME had reduced significantly to 30% in the manual group and 10% in the robot group. The need for ventilation tubes (VTs) decreased significantly over time, with fewer children in the robot group (41%) than those in the manual group (91%) needing new VTs during postoperative follow-up (P = 0.026). The number of children presenting without OME and VTs increased significantly over time, with a faster increase in the robot group at 1 year post-surgery (P = 0.009). Regarding hearing loss, significantly lower hearing thresholds were recorded in the robot group from 7 to 18 months postoperatively. To conclude, beneficial effects of robot-enhanced surgery were recorded, suggesting a faster recovery when the soft palate was reconstructed using the da Vinci robot.

Robotic and Endoscopic Approaches to Head and Neck Surgery

Technological developments have disrupted the practice of medicine throughout history. Endoscopic and robotic techniques in head and neck surgery have emerged over the past half-century and have been incrementally adapted to expanding indications within otolaryngology. Robotic and endoscopic surgery have an established role in treatment of oropharyngeal and laryngeal cancers, reducing surgical morbidity and improving survival relative to traditional open approaches. Surgical treatment of human papillomavirus-mediated oropharyngeal cancer via transoral robotic surgery offers equivalent oncologic and functional outcomes relative to radiotherapy. Newer iterations of single-port robotic systems continue to expand the scope of robotics in head and neck surgery.

A National Survey of Robotic Surgery Training Among Otolaryngology-Head and Neck Surgery Residents

OBJECTIVE

The aim of this study is to describe the current state of robotic surgery training among Otolaryngology-Head and Neck Surgery (OHNS) residency programs in the United States.

METHODS

This is a national survey study among OHNS residents. All OHNS residency programs were identified via the Accreditation Council for Graduate Medical Education website. A total of 64/127 (50.3%) of OHNS programs were selected based on a random number generator. The main outcome measure was the number of OHNS residents with access to robotic surgery training and assessment of operative experience in robotic surgery among those residents.

RESULTS

A total of 140 OHNS residents participated in the survey, of which 59.3% (n = 83) were male. Response rate was 40.2%. Respondents came from middle 50.0% (n = 70), southern 17.8% (n = 25), western 17.8% (n = 25), and eastern sections 14.3% (n = 20). Most respondents (94.3%, n = 132) reported that their institution utilized a robot for head and neck surgery. Resident experience at the bedside increased in the junior years of training and console experience increased across the years particularly for more senior residents. However, 63.4% of residents reported no operative experience at the console. Only 11.4% of programs have a structured robotics training program.

CONCLUSION

This survey indicated that nearly all OHNS residencies utilize robotic surgery in their clinical practice with residents receiving little formal education in robotics or experience at the console. OHNS residencies should aim to increase access to training opportunities in order to increase resident competency.

LEVEL OF EVIDENCE

IV.

Present and Future Trends in Transoral Surgical Intervention: Maximal Surgery, Minimally Invasive Surgery, and Transoral Robotic Surgery

Oral and maxillofacial surgery (OMFS) has undergone a renaissance/metamorphosis as a specialty and in the technologic innovations that have enhanced the surgical care of patients. This article reviews traditional maximal transoral approaches in the management of common pathologic lesions seen by OMFS, and compares these techniques with a literature review that applies minimally invasive technology and innovative robotic surgery (transoral robotic surgery) to treat similar lesions. The traditional approaches described in this article have transcended generations and future trends are suggested that will improve the training of the OMFS legacy as clinicians move forward in the care of patients.

Transoral Robotic Surgery and De-escalation of Cancer Treatment

This article outlines the ways that transoral robotic surgery and transoral laser microsurgery relate to treatment de-escalation in the treatment of head and neck cancer. Treatment de-escalation has particular importance in context of human papillomavirus-related oropharynx squamous cell carcinoma, which responds well to therapy but leaves many survivors with decades of treatment-related sequelae. We compare these less invasive transoral approaches with previously used open approaches to the oropharynx. We discuss the topic of treatment de-escalation in human papillomavirus-related disease and outline completed and ongoing clinical trials investigating the choice of primary treatment modality and de-escalation of adjuvant therapy.

Innovations and Future Directions in Head and Neck Microsurgical Reconstruction

Head and neck reconstructive microsurgery is constantly innovating because of a combination of multidisciplinary advances. This article examines recent innovations that have affected the field as well as presenting research leading to future advancement. Innovations include the use of virtual surgical planning and three-dimensional printing in craniofacial reconstruction, advances in intraoperative navigation and imaging, as well as postoperative monitoring, development of minimally invasive reconstructive microsurgery techniques, integration of regenerative medicine and stem cell biology with reconstruction, and the dramatic advancement of face transplant.

Robotic surgery of head and neck cancers, a narrative review

Head and neck cancers are the most common cancers in the body. Treatments are determined on the basis of the location and stage of the primary tumor. The goal of treatment is to eliminate the tumor, prevent recurrence or metastasis, and maintain the quality of life. There are several treatments available for the management of head and neck cancers, including surgery, radiation therapy, chemotherapy, new molecular agents, and a combination of them. Transoral robotic technique is a short-time operation using a type of robotic machine in which the patient undergoes anesthesia for a shorter time and the side effects of this operation and the time of hospitalization are less than open surgery. Due to the importance of speed and accuracy in head and neck cancer surgery and the importance of application of robotics in surgery, the present study was designed and implemented to review the application of robotics in the management of head and neck cancers. In this review study, the keywords: application, robotic, surgical, head cancer, transoral robotic surgery (TORS), and neck cancer, were searched in ISI, PubMed, Scopus, Google scholar databases. Related articles written domestically or abroad that have covered areas such as the background of transoral robotic surgery, maintaining organ function and approaches, the advantages and disadvantages of TORS, the affordability of TORS, the combination of TORS with other therapeutic approaches published from 2003 to 2019 were reviewed. The use of robotic surgery for precise operations such as head and neck cancers seems to be essential. More advanced robotic devices are expected to expand the surgery treatment for head and neck cancers as well as the results of using TORS for oncologic optimization and acceptability of results while maintaining organ function and patient's quality of life.

Robotic surgery of head and neck cancers, a narrative review

Head and neck cancers are the most common cancers in the body. Treatments are determined on the basis of the location and stage of the primary tumor. The goal of treatment is to eliminate the tumor, prevent recurrence or metastasis, and maintain the quality of life. There are several treatments available for the management of head and neck cancers, including surgery, radiation therapy, chemotherapy, new molecular agents, and a combination of them. Transoral robotic technique is a short-time operation using a type of robotic machine in which the patient undergoes anesthesia for a shorter time and the side effects of this operation and the time of hospitalization are less than open surgery. Due to the importance of speed and accuracy in head and neck cancer surgery and the importance of application of robotics in surgery, the present study was designed and implemented to review the application of robotics in the management of head and neck cancers. In this review study, the keywords: application, robotic, surgical, head cancer, transoral robotic surgery (TORS), and neck cancer, were searched in ISI, PubMed, Scopus, Google scholar databases. Related articles written domestically or abroad that have covered areas such as the background of transoral robotic surgery, maintaining organ function and approaches, the advantages and disadvantages of TORS, the affordability of TORS, the combination of TORS with other therapeutic approaches published from 2003 to 2019 were reviewed. The use of robotic surgery for precise operations such as head and neck cancers seems to be essential. More advanced robotic devices are expected to expand the surgery treatment for head and neck cancers as well as the results of using TORS for oncologic optimization and acceptability of results while maintaining organ function and patient's quality of life.

Increased prevalence of neural monitoring during thyroidectomy: Global surgical survey

OBJECTIVE

To investigate intraoperative nerve monitoring (IONM) use among thyroid surgeons.

METHODS

A 25-question survey was used to assess attitudes regarding IONM use. Surveys were sent to surgeons registered to the American Academy of Otolaryngology-Head and Neck Surgery, International Association of Endocrine Surgeons, and American Head and Neck Society.

RESULTS

Among 1,015 respondents, 83% reported using IONM (65.1% always using IONM and 18.1% reporting selective use). For selective users, a majority reported using IONM for reoperative cases (95.1%) and in cases with preoperative vocal cord paralysis (59.8%). When comparing location, there was a significant difference in IONM implementation (P < 0.001), with 70.4% of North American responders using it ubiquitously compared to 27.4% of non-North American responders. Preoperative laryngeal exam was performed more universally by North American surgeons and more selectively by non-North American surgeons (P < 0.001). Other attitudes toward their implementation and the postoperative laryngeal exam were similar. Surgeons ≤45 years of age and those with ≤15 years of practice used IONM more than their peers (P < 0.001). Thyroid surgery volume, fellowship training, and type of practice had no bearing on IONM use.

CONCLUSION

The prevalence of IONM in thyroid and parathyroid surgeries has increased significantly over the past decade, with 83% of surgeons using IONM in some or all cases. Although IONM use may be more ubiquitous in North America, attitudes toward its implementation and pre- and postoperative laryngeal exams are fairly uniform. IONM use is more prevalent among younger surgeons, whereas its use has no correlation with thyroid surgery volume or type of practice.

LEVEL OF EVIDENCE

4 Laryngoscope, 130:1097-1104, 2020.

Spondylodiscitis after transoral robotic surgery: Retrospective 7-case series from the GETTEC group

BACKGROUND

Cervical spondylodiscitis is a rare but severe complication of pharyngeal surgery.

MATERIAL AND METHODS

This multicenter retrospective study reported all patients in the database of the French head and neck tumor study group (GETTEC) affected by cervical spondylodiscitis after transoral robotic surgery (TORS) for malignant pharyngeal tumor from January 2010 to January 2017.

OBJECTIVES

To describe cases of post-TORS cervical spondylodiscitis, identify alarm signs, and determine optimal management of these potentially lethal complications.

RESULTS

Seven patients from 6 centers were included. Carcinomas were located in the posterior pharyngeal wall. Tumor stage was T1 or T2. All patients had risk factors for spondylodiscitis. Mean time to diagnosis was 12.6days. The interval between surgery and spondylodiscitis diagnosis ranged from 20days to 4.5months, for a mean 2.1months. The most common symptom was neck pain (87%). Infections were polymicrobial; micro-organisms were isolated in 5 cases and managed by intravenous antibiotics, associated to medullary decompression surgery in 3 cases. Follow-up found favorable progression in 4 cases, and 3 deaths (mortality, 43%).

CONCLUSION

This French multicenter study found elevated mortality in post-TORS spondylodiscitis, even in case of limited resection. Surgeons must be aware of this complication and alerted by persistent neck pain, fever, asthenia, impaired or delayed posterior pharyngeal wall wound healing or elevation of inflammatory markers. MRI is the most effective diagnostic radiological examination.

Transoral surgery using the Flex Robotic System: Initial experience in the United States

BACKGROUND

This multicenter, retrospective review documents the initial experience using the Flex system for transoral surgery in 2 United States academic centers.

METHODS

All patients who underwent transoral robotic surgery using the Medrobotics Flex Robotic System (Raynham, MA) between September 2015 and May 2017 were reviewed. Rates of successful surgery and complications were evaluated.

RESULTS

Thirty-six men and 32 women were enrolled in the study. The average age was 55.6 years (range 17-82 years). The Flex system was used successfully in surgery of the tongue base, the palatine tonsils, the supraglottis, the glottis, the hypopharynx, the oral tongue, and the soft palate. Only 6 cases (7.6%) required readmission after discharge. There were no intraoperative or immediate postoperative complications, with no cases of intraoperative hemorrhage.

CONCLUSION

To the best of our knowledge, this is the first study in the United States evaluating the use of the Flex system to safely resect lesions in the oral cavity, larynx, and pharynx.

Current Role of Surgery in the Management of Oropharyngeal Cancer

The 1990s saw an increased use of chemoradiotherapy protocols, commonly referred to as organ-sparing therapy, for the treatment of oropharyngeal cancer after the Groupe d'Oncologie Radiothérapie Tête et Cou trial. Since that time, human papillomavirus-associated oropharyngeal squamous cell carcinoma has been identified as a unique disease, with improved survival regardless of treatment modality. The improved outcomes of this population has led to re-evaluation of treatment paradigms in the past decade, with a desire to spare young, human papillomavirus-positive patients the treatment-related toxicities of chemoradiotherapy and to use new minimally invasive surgical techniques to improve outcomes. Numerous retrospective and prospective studies have investigated the role of surgery in treatment of oropharyngeal carcinoma and have demonstrated equivalent oncologic outcomes and improved functional outcomes compared with chemoradiotherapy protocols. Ongoing and future clinical trials may help delineate the role of surgery in the future.

Is There a Role for Robotic Surgery in the Treatment of Head and Neck Cancer?

OPINION STATEMENT

Given the potential for long-term toxicities from concurrent chemoradiation, there is great interest in surgery as a primary treatment modality for head and neck cancers, particularly in the younger HPV-positive oropharyngeal cancer patient. Transoral robotic surgery (TORS) has proven to be an effective technique to safely treat oropharyngeal and select supraglottic tumors surgically. Sound, traditional surgical principles are employed using improved endoscopic visualization and precise instrumentation to perform oncologic surgery without the morbidity of transmandibular or transcervical approaches. Although level 1 evidence prospective clinical trials are currently underway for TORS, the literature supports its safety and efficacy based on numerous studies. Currently, prospective randomized trials are underway to provide better evidence for or against TORS in oropharyngeal cancer. Patient selection based on comorbidities, anatomy, and available pathological data is critical in choosing patients for TORS.

Abrasion and blunt tissue trauma study of a novel flexible robotic system in the porcine model

OBJECTIVES

The objective of this study was to determine if a flexible robotic system caused increased tissue reaction when accessing the oropharynx and hypopharynx compared to intubation controls in only 2 scenarios: high speed tissue impact and multiple unit insertions and retractions. The data obtained were submitted as part of the entirety of information submitted for FDA approval.

METHODS

This study consisted of 5 groups of Yorkshire pigs (2 animals per group). On Day 0, all animals were intubated. For group 1 (control), a second endotracheal tube was advanced to just above the vocal cords. In abrasion groups 2 and 3, the flexible robotic system was advanced against the oropharyngeal and hypopharyngeal tissues, respectively. In blunt trauma groups 4 and 5, the flexible robotic system was advanced at maximum speed (22mm/s) to collide with oropharyngeal and hypopharyngeal tissues, respectively. Pre- and post-procedure endoscopic assessments of tissue reaction were performed daily for 4 days. An independent reviewer graded tissue reaction using a 0-3 point scale.

RESULTS

Tissue reaction scores at each observation time point for all test groups were less than or equal to control scores except for one instance of moderate scoring (2 out of 3) on Day 2 for an animal in the blunt trauma group where reaction was likely intubation-related rather than device impact related. Otherwise, all flexible robotic system-treated animal scores were less than 1 by Day 4.

CONCLUSIONS

In this limited study, the flexrobotic system afforded surgical access to the oropharynx and hypopharynx without an increased level of abrasion or tissue trauma when compared to intubation alone.

Robotic surgical systems in maxillofacial surgery: a review

Throughout the twenty-first century, robotic surgery has been used in multiple oral surgical procedures for the treatment of head and neck tumors and non-malignant diseases. With the assistance of robotic surgical systems, maxillofacial surgery is performed with less blood loss, fewer complications, shorter hospitalization and better cosmetic results than standard open surgery. However, the application of robotic surgery techniques to the treatment of head and neck diseases remains in an experimental stage, and the long-lasting effects on surgical morbidity, oncologic control and quality of life are yet to be established. More well-designed studies are needed before this approach can be recommended as a standard treatment paradigm. Nonetheless, robotic surgical systems will inevitably be extended to maxillofacial surgery. This article reviews the current clinical applications of robotic surgery in the head and neck region and highlights the benefits and limitations of current robotic surgical systems.

TORS in HPV-Positive Tumors-The New Standard?

In this chapter, we discuss implications of tumor site and tumor microenvironment properties of human papilloma virus (HPV)-associated cancer formation with special emphasis on the therapeutic modality of transoral robotic surgery (TORS). Over the past years, the development of robotic systems has improved, and therefore, its use in the surgical treatment of HNSCC has become a relevant treatment modality for many patients. Yet, there are limitations. Especially for endolaryngeal TORS procedures, additional technical development is mandatory, particularly with respect to visualization and manipulation. The Flex System has provided new additions that need to be further evaluated. TORS systems are going to improve technical issues and therefore reduce patient morbidity, surgical handling and treatment costs. The developed systems have to be tested and evaluated in prospective trials in order to be able to identify benefits and disadvantages in patient care. With respect to HPV-related OPSCC, TORS has become a valuable surgical alternative for an increasing number of patients.

Transoral robotic surgery frontiers

Transoral robotic surgery is a exciting field that continues to develop and push the boundaries of current procedural ability and challenges historical treatment paradigms. With the first use of a surgical robot in 1985, to the first clinical use of the robot transorally in 2005, there was some lag in adoption of robotic techniques in the head and neck region. However, since 2005 transoral robotic surgery has rapidly gained momentum amongst head and neck surgeons. With FDA approval of the da Vinci robot in 2009, transoral robotic surgery is currently offered as a treatment modality for malignant and nonmalignant disease of the head and neck region. This new technology is being used to reconsider historical treatment paradigms for malignancies of the upper aerodigestive tract due to the fact that minimally invasive surgical access to the oropharynx and larynx has been improved. Along with this enhanced access have come innovative procedures and uses of the technology for multiple facets of head and neck disease. Technology continues to improve and innovation in surgical robotics is expected to continue as more companies attempt to capture this market. This article aims to provide a view at the landscape of transoral robotic surgery and explore the future frontiers.

Management of laryngoceles by transoral robotic surgery

We herein report our experience with the management of laryngoceles using transoral robotic surgery (TORS). A bicentric retrospective study was conducted from November 2009 to September 2015. The inclusion criteria were treatment of a laryngocele by TORS and no malignancy on definitive histopathology. Surgery was performed using the Da Vinci (Intuitive^®) surgical robot. Surgical methods and post-operative outcomes were evaluated. Eight patients (four men and four women) presenting with a laryngocele (one bilateral case) were included (mean age 61.8 years). There was one covering tracheotomy. The average post-operative stay was 3.75 days. Three patients treated for a combined laryngocele had a nasogastric feeding tube inserted for 5 days. One patient experienced late laryngeal bleeding that required surgical treatment. TORS may offer an efficient treatment option for laryngoceles. The use of precise and flexible instruments and a three-dimensional camera allow fine dissection of these tumours, preserving the glottic space and vocal function, even for combined laryngoceles extending deep within the neck.Evidence level: 4.

Utility of the Highly Articulated Flex Robotic System for Head and Neck Procedures: A Cadaveric Study

OBJECTIVE

Robotic head and neck surgery potentially reduces the morbidity associated with traditional open procedures. This study's goal was to employ a novel highly articulated robotic system (Flex Robotic System) for head and neck procedures, including a postauricular facelift approach thyroidectomy, submandibular gland (SMG) removal, and cervical lymphadenectomy.

STUDY DESIGN

It was hypothesized that the Medrobotics Flex Robotic System could be used for transcervical head and neck surgical procedures.

METHODS

Three fresh upper body human cadavers were used. The Flex Robotic System was used to complete a thyroidectomy, neck dissection, and SMG removal on each cadaver.

RESULTS

A postauricular incision and flap was manually raised. The robotic system was positioned on the right side of the cadaver's head. The system's manually controlled flexible instruments and highly shapeable, robot-assisted scope were used to perform a thyroid lobectomy. Neck dissection and SMG removal were also performed.

CONCLUSIONS

Although a promising technology, the current robotic system (Intuitive Surgical Inc, Sunnyvale, California, USA) has limitations due to its rigid and large configuration, which decreases exposure and access. The new system's shapeable, computer-assisted scope seeks to reduce some of these difficulties and may be better adapted for transcervical approaches to the neck operations.

Transoral Robotic Cleft Palate Surgery

Objective   This study aimed to assess the safety and feasibility of transoral robotic surgery for the reconstruction of soft palatal clefts. Design   The application of transoral robotic surgery for soft palate muscle reconstruction was investigated. The da Vinci Surgical Robot was first used on a cadaver to assess the optimal positioning of the patient and the robot. The robot was then used for the dissection and reconstruction of palatal muscles in 10 consecutive patients with palatal clefts. The procedures were documented using video and still photography. A group of 30 control patients were subjected to surgery with manual instruments. Surgical and clinical outcomes were evaluated with at least 6 months of follow-up (8 ± 1 months). Results   The use of the surgical robot on a cadaver provided great dexterity and excellent 3D depth perception. The transoral access was efficient and safe for the precise dissection, reorientation, and suturing of palatal muscles. In our series, the surgical duration was longer for the robotic approach than for the manual approach (87 ± 6 minutes versus 122 ± 8 minutes, P < .0001). No intraoperative or postoperative complications occurred in either group.

CONCLUSIONS

A robotic surgical approach can be used safely for palatal surgery. We believe that the precise dissection of the palatal muscles provided by the robotic system might reduce damage to the vascularization and innervation of these muscles, as well as damage to the mucosal surfaces that could cause fistula formation. In addition, this technique might improve palatal function and Eustachian tube function in cleft palate patients.

Applications for transoral robotic surgery in the pediatric airway

OBJECTIVES/HYPOTHESIS

To report preliminary experience in the utilization of transoral robotic surgical (TORS) techniques in pediatric airway surgery.

STUDY DESIGN

Retrospective case series.

METHODS

A retrospective chart review was performed on all pediatric patients undergoing robotic airway surgery at a university-based children's hospital between August 2010 and December 2012.

RESULTS

Three pediatric patients underwent robotic repair of various airway anomalies between August 2010 and December 2012. Case 1 is a 15-year-old boy with posterior glottic stenosis for which a robotic-assisted posterior cricoid split with cartilage graft placement was attempted but ultimately required conversion to an open technique. Case 2 is a 6-year-old male with Trisomy 21 who had robotic-assisted endoscopic repair of a type II laryngeal cleft, with subsequent resolution of his chronic aspiration and successful initiation of oral feeding. Case 3 is a 3-year-old female who underwent robotic-assisted left posterior cordectomy and subtotal arytenoidectomy for idiopathic bilateral vocal cord paralysis, resulting in improved Passy-Muir valve tolerance.

CONCLUSION

TORS is being increasingly utilized in the field of head and neck surgery as it is frequently less invasive and often demonstrates improved outcomes compared with traditional approaches. This study details our experience utilizing TORS in the management of pediatric airway anomalies and represents one of the earliest such series in the literature. Although TORS has the potential to improve the management of pediatric airway disorders, larger, prospective studies are needed to better elucidate its feasibility and efficacy.

LEVEL OF EVIDENCE

4.

Current trends in robotic surgery for otolaryngology

As minimally invasive surgery has become common in head and neck surgery, the role of robotic surgery has expanded from thyroid surgery and transoral robotic surgery (TORS) of the oropharynx and supraglottic to other areas. Surgeons have advanced the limits of TORS, adapting lasers to the Da Vinci robot for glottic cancer, and combining existing techniques for transoral supraglottic laryngectomy and hypopharyngectomy to perform transoral total laryngectomy. Skull base approaches have been reported with some success in case reports and cadaver models, but the current instrument size and configuration limit the applicability of the current robotic system. Surgeons have reported reconstruction of the head and neck via local and free flaps. Using the previously reported approaches for thyroidectomy via modified facelift incision, neck dissection has also been reported. Future applications of robotic surgery in otolaryngology may be additionally expanded, as several new robotic technologies are under development for endolaryngeal work and neurotology.

The da Vinci robotic surgical assisted anterior lumbar interbody fusion: technical development and case report

STUDY DESIGN

Technique development to use the da Vince Robotic Surgical System for anterior lumbar interbody fusion at L5-S1 is detailed. A case report is also presented.

OBJECTIVE

To evaluate and develop the da Vinci robotic assisted laparoscopic anterior lumbar stand-alone interbody fusion procedure.

SUMMARY OF BACKGROUND DATA

Anterior lumbar interbody fusion is a common procedure associated with potential morbidity related to the surgical approach. The da Vinci robot provides intra-abdominal dissection and visualization advantages compared with the traditional open and laparoscopic approach.

METHODS

The surgical techniques for approach to the anterior lumbar spine using the da Vinci robot were developed and modified progressively beginning with operative models followed by placement of an interbody fusion cage in the living porcine model. Development continued to progress with placement of fusion cage in a human cadaver, completed first in the laboratory setting and then in the operating room. Finally, the first patient with fusion completed using the da Vinci robot-assisted approach is presented.

RESULTS

The anterior transperitoneal approach to the lumbar spine is accomplished with enhanced visualization and dissection capability, with maintenance of pneumoperitoneum using the da Vinci robot. Blood loss is minimal. The visualization inside the disc space and surrounding structures was considered better than current open and laparoscopic techniques.

CONCLUSION

The da Vinci robot Surgical System technique continues to develop and is now described for the transperitoneal approach to the anterior lumbar spine.

LEVEL OF EVIDENCE

4.

Perioperative concerns in transoral robotic surgery: Initial experience of four cases

US Food and Drug Administration has recently approved transoral robotic surgery for the treatment of some benign tumors and selected malignant tumors of the head and neck. Robotically-assistance in ear, nose and throat surgery is established and will play an increasingly large role in the future of surgical practice. Anesthesiologists need to modify their management and familiarize themselves with the upcoming robotic procedures to ensure better patient outcomes and improve patient safety.

Qualitative and quantitative differences between 2 robotic thyroidectomy techniques

OBJECTIVES

Two distinct remote access robotic thyroidectomy techniques were implemented in a high-volume endocrine surgery practice. Important technical and clinical differences were observed and are described.

STUDY DESIGN

Cross-sectional study with planned data collection.

SETTING

Thyroid center.

SUBJECTS AND METHODS

A panel of demographic and clinical parameters was captured in a series of patients undergoing 1 of 2 robotic thyroidectomy techniques (robotic axillary thyroidectomy [RAT] or robotic facelift thyroidectomy [RFT]). Particular attention was paid to time of surgery, ease of dissection, complications, use of drains, and length of stay.

RESULTS

Fifteen robotic hemithyroidectomies were accomplished by either RAT (n = 5) or RFT (n = 10). The duration of surgery for RAT averaged 196 ± 38.1 minutes, with no clear downward trend observed. The mean time of surgery for RFT was 156.9 ± 16.3 minutes, with a steady trend toward shorter surgical times. All 5 RAT patients were managed with drains and as inpatients (length of stay = 1.0 days); 9 of 10 RFT patients were managed without drains and on an outpatient basis (the first patient had a drain and was observed for 1 night in the hospital; P < .001). Ease of surgery, familiarity with anatomic dissection planes, and surgeon comfort level all favored RFT.

CONCLUSIONS

In an early experience of a small series of patients, a more rapid learning curve reflected by shorter operative times was observed with robotic facelift thyroidectomy compared with robotic axillary thyroidectomy. Furthermore, the vast majority of patients could be managed as outpatients, which represents one of several apparent advantages.

The use of robotics in otolaryngology-head and neck surgery: a systematic review

BACKGROUND

Robotic surgery has become increasingly used due to its enhancement of visualization, precision, and articulation. It eliminates many of the problems encountered with conventional minimally invasive techniques and has been shown to result in reduced blood loss and complications. The rise in endoscopic procedures in otolaryngology-head and neck surgery, and associated difficulties, suggests that robotic surgery may have a role to play.

OBJECTIVE OF REVIEW

To determine whether robotic surgery conveys any benefits compared to conventional minimally invasive approaches, specifically looking at precision, operative time, and visualization.

TYPE OF REVIEW

A systematic review of the literature with a defined search strategy.

SEARCH STRATEGY

Searches of MEDLINE, EMBASE and CENTRAL using strategy: ((robot* OR (robot*AND surgery)) AND (ent OR otolaryngology)) to November 2010.

EVALUATION METHOD

Articles reviewed by authors and data compiled in tables for analysis.

RESULTS

There were 33 references included in the study. Access and visualization were regularly mentioned as key benefits, though no objective data has been recorded in any study. Once initial setup difficulties were overcome, operative time was shown to decrease with robotic surgery, except in one controlled series of thyroid surgeries. Precision was also highlighted as an advantage, particularly in otological and skull base surgery. Postoperative outcomes were considered equivalent to or better than conventional surgery. Cost was the biggest drawback.

CONCLUSIONS

The evidence base to date suggests there are benefits to robotic surgery in OHNS, particularly with regards to access, precision, and operative time but there is a lack of controlled, prospective studies with objective outcome measures. In addition, economic feasibility studies must be carried out before a robotic OHNS service is established.

Robotics and telesurgery in otolaryngology

This article reviews the use of robotic technology for otolaryngologic surgery. The authors discuss the development of the technology and its current uses in the operating room. They address procedures such as oropharyngeal transoral robotic surgery (TORS), laryngeal TORS, and thyroidectomy, and also note the role of robotics in teaching.

Robotic facelift thyroidectomy: I. Preclinical simulation and morphometric assessment

OBJECTIVES

Robotic thyroidectomy was introduced in the United States despite scant preclinical data. We pursued a systematic preclinical investigation of a new remote access, robotic thyroidectomy technique via a facelift incision, and sought to define differences in extent of dissection associated with this approach and a second, popular robotic thyroidectomy technique.

DESIGN

Surgical simulation and morphometric analysis in fresh human cadavers.

METHODS

Eleven specimens were obtained to complete four experiments designed to address two specific aims: to develop a reproducible surgical protocol for robotic removal of the thyroid through a facelift incision, and to quantify the extent of dissection required with two robotic thyroidectomy techniques.

RESULTS

The feasibility of the facelift approach was determined using an endoscopic technique, and two lobectomies were accomplished. Inanimate study of the optimal robotic positioning to facilitate resection was then completed. Three additional cadavers were used to develop a reproducible surgical protocol and define a stepwise algorithm of dissection. Seven specimens were used to simulate 28 robotic thyroidectomy dissection pockets. The mean area of dissection required for robotic facelift thyroidectomy was 39.2 ± 6.6 cm(2) compared with 63.5 ± 9.6 cm(2) for robotic axillary thyroidectomy, representing a difference of 38.3% (P < .0001).

CONCLUSIONS

We have described and refined a reproducible surgical protocol for accomplishing a new robotic facelift thyroidectomy, and then quantified the reduced dissection required when comparing it with a transaxillary technique. Cautious clinical implementation to explore safety and feasibility appears to be justified.

Transoral robotic surgery for the management of head and neck tumors: learning curve

Transoral robotic surgery (TORS) is an emerging technique for the treatment of head and neck tumors. The objective of this study is to describe our first steps and present our experience on the technical feasibility, safety, and efficacy of TORS for the treatment of selected malignant lesions. From April 2008 to September 2009, 24 patients were enrolled in this prospective trial. Inclusion criteria were: adults with T1, T2 and selected T3 tumors involving the oral cavity, pharynx, and supraglottic larynx and a signed informed consent was obtained from the patient. Exclusion criteria were: tumors not accessible to TORS after unsuccessful attempts to expose properly the lesion to operate. The ethical committee's approval was obtained to perform this study. Twenty-four patients were included in this study: 10 supraglottic tumors, 10 pharyngeal tumors and 4 oral cavity tumors. Nine patients had T1 tumors, 12 had T2 tumors, and 1 patient had a T3 tumor. In all cases, tumor resection could be performed by robotic surgery exclusively and negative resection margins were achieved with control by frozen section. None of them received intraoperative reconstruction. None of the patients required tracheotomy. There was no intraoperative complication related to the use of the robot. The average setup time was 24 ± 14 min (range 10-60 min). The average surgical time was 67 ± 46 min (range 12-180 min). Surgical and setup time decreased after the first cases. The mean hospital stay was 9 days. Oral feeding was resumed at 3 days. TORS seems to be a safe, feasible, minimally invasive treatment modality for malignant head and neck tumors with a short learning curve for surgeons already experienced in endoscopic surgery.

Robotic-assisted transoral removal of a submandibular megalith

The majority of salivary stones are less than 8 mm in size and most frequently occur in the submandibular gland. Traditional management of larger stones involves gland resection. Sialendoscopy combined with an external or a transoral sialolithotomy, also called the combined approach technique, permits stone removal and gland preservation. A 31-year-old male presented to our service with a 20-mm megalith in the left submandibular gland. Here we report the first description of a combined approach using the da Vinci Si Surgical System to facilitate transoral stone removal and salivary duct repair.