Computer-Assisted Surgery of the Paranasal Sinuses—Technical and Clinical Experiences with the VectorVision® Compact Navigation System in 368 Patients

Skull Base ◽  
2007 ◽  
Vol 16 (S 2) ◽  
Author(s):  
H. Hagedorn ◽  
K. Stelter ◽  
Andreas Leunig ◽  
Michaela Andratschke
Keyword(s):  
Paranasal Sinuses ◽  
Navigation System ◽  
Computer Assisted Surgery ◽  
Computer Assisted ◽  
Clinical Experiences

scholarly journals Integrating a Tracking Camera in the OR Using the IEEE 11073-SDC Communication Standard

10.29007/j83k ◽  
2019 ◽  
Author(s):  
Manuel Vossel ◽  
Matías de La Fuente ◽  
Dario Wieschebrock ◽  
Okan Yilmaz ◽  
Klaus Radermacher ◽  
...  
Keyword(s):  
Navigation System ◽  
Computer Assisted Surgery ◽  
Computer Assisted ◽  
Navigation Systems ◽  
Standard Equipment ◽  
Multiple Systems ◽  
Underlying Network ◽  
Ieee 11073 Sdc ◽  
New Applications ◽  
Ieee 11073

With the increasing spread of computer assisted surgery, more and more modern operating rooms are equipped with navigation systems, each coming with its own tracking camera. Since those cameras are part of the closed monolithic navigation system, they can’t be used for other applications than the one intended by the supplier. With the novel service oriented device connectivity standard (IEEE 11073-SDC), introduced by the OR.NET initiative (www.ornet.org), needless double procurements could be avoided and multiple systems could use the same camera that – similar to OR lights – could be installed as a standard equipment in each OR. This would decrease the cost-to-benefit ratio also of new applications that would currently as such not justify to acquire a proprietary tracking camera.While the integration of a tracking camera to an open medical device IT network can open up for new applications, it should on the other hand not impair the usability and the safety of the navigation system. Therefore, a low latency must be guaranteed between tracking camera and navigational display.This paper evaluates the integration of an atracsys fusionTrack 500 tracking camera into the OR.NETwork. The response time from a change in the real world to the reception of the corresponding data package is measured to determine the feasibility of an integra- tion without impairing current navigational tasks.The results show that, as long as the underlying network infrastructure is not at its capacity limit, latencies below 60 ms are achieved. Therefore, the integration of a tracking camera for navigational tasks is feasible.

scholarly journals Computer-assisted surgery navigation of pedicle screw insertion by standardized trainees

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Mingyong Liu ◽  
Liang Zhang ◽  
Jianhua Zhao ◽  
Peng Liu
Keyword(s):  
Ct Scan ◽  
Pedicle Screw ◽  
Navigation System ◽  
Computer Assisted Surgery ◽  
Control Group ◽  
Computer Assisted ◽  
Low Grade ◽  
Screw Insertion ◽  
Pedicle Screw Insertion ◽  
Thoracic Pedicle Screw

<p><strong>Objective:</strong> To assess the precision and efficiency computer-assisted surgery navigation of pedicle screw insertion by standardized trainees. <strong>Methods</strong> From September 2013 to June 2016, 360 thoracic pedicle screws were inserted into 100 patients by standardized trainees (n = 30). Screws on the left side were inserted by hands (control group), while the other side were inserted under the guidance of computer-assistant navigation system (guided group). The insertion time and volume of blood lost by each screw were retrospectively analyzed. The precision ratio was assessed by computerized tomography (CT) scan after operation. <strong>Results</strong> The time consumed in screw insertion was significantly shorter in the guided group than that in the control group. The blood lost volume was lesser in the guided group. Post-operation CT scan revealed higher precision in the guided group than that in the control group.<strong> Conclusion</strong> Computer-assistant navigation system facilitates the learning of standardized trainees, and reduces the time-consuming and bleeding in thoracic pedicle screw insertion. Orthodontics training is the most important low-grade physician training in the orthopedic department1,2. Due to the complexity of spinal anatomy, professional required and high risk of spinal surgery, thoracic pedicle screw implantation has become a very demanding technique. Furthermore, the spine surgery learning is not conducive to the trainees. Since 2013, our department started to use the computer-assisted three-dimensional navigation technology to guide the implantation of screws3. We found that the computer-assisted navigation technology has greater advantage when compared with the traditional hand-implanted technology.</p>

A Simple Goniometer for Use Intraoperatively in Total Knee Arthroplasty

2013 ◽  
Vol 7 (1) ◽  
Author(s):  
W. McGann ◽  
J. Peter ◽  
J. M. Currey ◽  
J. M. Buckley ◽  
K. D. Liddle
Keyword(s):  
Total Knee Arthroplasty ◽  
Measurement Error ◽  
Knee Arthroplasty ◽  
Navigation System ◽  
Measurement Errors ◽  
Computer Assisted Surgery ◽  
Angle Measurement ◽  
Lower Limbs ◽  
Computer Assisted ◽  
Total Knee

Intraoperative range of motion (ROM) assessment can be challenging during total knee arthroplasty (TKA) surgery. As computer assisted surgery is costly and not readily available to many surgeons, we have developed a simple, cost-effective intraoperative device to precisely measure knee flexion and extension. A simple knee goniometer system was constructed consisting of a digital level mounted to a base that rigidly attaches two standard needles. The needles are pushed through the overlying soft tissue of the distal femur. The device is then applied to the proximal tibia, where an angle measurement of the knee is registered. A validation study for this device was conducted on two pairs of intact cadaveric lower limbs at 0 deg, 10 deg, 15 deg, 20 deg, 25 deg, and 30 deg. Two orthopedic surgeons experienced with the system performed three measurements at each angle. Systematic error, defined as the goniometer reading at 0 deg flexion anatomically as determined by the navigation system, ranged from −9.1 deg to 3.0 deg, consistent for each operator on every case. Measurement error, defined as the variability in repeated, fixed angle measurements made with the goniometer, was 1.5 ± 1.0 deg across all surgeons, cases, and prescribed flexion angles. For both surgeons and all imposed flexion angles, measurement errors were below the 4 deg clinical threshold. The simple knee goniometer system generated accurate, repeatable measures of changes in flexion angle intraoperatively with measurement error comparable to errors obtained using the commercial navigation system (1 deg–2 deg). However, the knee goniometer is less complex, less time intensive, and less costly than currently available computer assistive devices. Taken together, our results are very promising for the continued development of this device.

scholarly journals Accuracy analysis of computer-assisted surgery for femoral trochanteric fracture using a fluoroscopic navigation system: Stryker ADAPT®system

Injury ◽  
2018 ◽  
Vol 49 (6) ◽  
pp. 1149-1154 ◽  
Author(s):  
Hirokazu Takai ◽  
Masatoshi Murayama ◽  
Sakumo Kii ◽  
Daisuke Mito ◽  
Chihiro Hayai ◽  
...  
Keyword(s):  
Navigation System ◽  
Trochanteric Fracture ◽  
Computer Assisted Surgery ◽  
Computer Assisted ◽  
Accuracy Analysis ◽  
Fluoroscopic Navigation

Navigation as a quality management tool in cochlear implant surgery

2004 ◽  
Vol 118 (10) ◽  
pp. 764-770 ◽  
Author(s):  
Jörg Schipper ◽  
Antje Aschendorff ◽  
Iakovos Arapakis ◽  
Thomas Klenzner ◽  
Christian Barna Teszler ◽  
...  
Keyword(s):  
Quality Management ◽  
Cochlear Implant ◽  
Navigation System ◽  
Cochlear Implantation ◽  
Computer Assisted Surgery ◽  
Management Tool ◽  
Computer Assisted ◽  
Implant Surgery ◽  
Lateral Skull Base ◽  
Cochlear Implant Surgery

This cadaver study assessed the value of navigation in cochlear implant surgery. Cochlear implantation was simulated on a cadaver using a Stryker-Leibinger navigation system and a Nucleus 24 Contour implant. A conventional surgical strategy consisting of mastoidectomy, posterior tympanotomy, and cochleostomy was performed. The navigated surgical procedure was evaluated for accuracy, reliability, reproducibility, and practicability. The technology of computer-assisted surgery is applicable in cochlear implantation and beneficial in as much as the navigation-controlled implantation constitutes a non-invasive instrument of quality management. Nevertheless, in order to keep the point accuracy below one millimeter, a referencing methodusing concealed bordering anatomical structures may be further needed to perform the cochleostomy reliably under the guidance of a navigation system. More reproducible reference systems are needed if navigated lateral skull base surgery is to be fully relied upon.

scholarly journals Fibro-osseous lesions of the paranasal sinuses and the skull base

2018 ◽  
Vol 4 (6) ◽  
pp. 1324
Author(s):  
Sajedh M. Alturaiki ◽  
Ali Almomen ◽  
Ghaleb Al Azzeh ◽  
Abdulrahman Al Khatib ◽  
Nada Alshaikh
Keyword(s):  
Skull Base ◽  
Fibrous Dysplasia ◽  
Paranasal Sinuses ◽  
Correct Diagnosis ◽  
Computer Assisted Surgery ◽  
Ossifying Fibroma ◽  
Computer Assisted ◽  
Open Approach ◽  
Diagnostic Dilemma ◽  
Treatment Prognosis

<p class="abstract"><strong>Background:</strong> Osteomas, ossifying fibromas, and fibrous dysplasia comprise a set of benign neoplasms known as fibro-osseous lesions (FO), which can arise in the paranasal sinuses. The vast majority of benign FO lesions (BFOL) are incidental findings on radiographs. They tend to be slow-growing tumors, and are infrequently symptomatic. The management strategy can vary significantly for theses lesions. This can range from serial, observations to aggressive surgical resection, based on symptomatology, size, and location of the lesion.</p><p class="abstract"><strong>Methods:</strong> Retrospective analysis of all the data of different symptomatic FO of the paranasal sinuses and the skull base was performed at King Fahad specialist hospital, Dammam, KSA (2006 to 2017).  </p><p class="abstract"><strong>Results:</strong> A total of 21 patients were identified; 10 (46.7%) patients were diagnosed with osteoma, 8 (38.1%) with fibrous dysplasia, 2 (9.5%) with ossifying fibroma and one (4.8%) with juvenile active ossifying (JAOF), 17 were adults and 4 were children, the range of f/u (3-60) months. 19 patients were managed by the endonasal endoscopic approach. They continue to be followed with no evidence of recurrence. Two cases required the revision combined endoscopic open approach to ensure adequate removal of the disease (residual and recurrence).</p><p><strong>Conclusions:</strong> Diagnostic dilemma of BFOL can be overcome with a combination of clinical, radiological and pathological criteria. Correct diagnosis of fibro-osseous tumors is crucial for adequate therapy as their treatment, prognosis, clinical aggressiveness and long term complications of individual entities vary significantly. Endoscopic computer-assisted surgery is the treatment of choice. Endoscopic resection remains a technical challenge. </p>

scholarly journals Computer-assisted surgery navigation of pedicle screw insertion by standardized trainees

2019 ◽  
Author(s):  
Ming Yong Liu
Keyword(s):  
Ct Scan ◽  
Pedicle Screw ◽  
Navigation System ◽  
Pedicle Screws ◽  
Computer Assisted Surgery ◽  
Control Group ◽  
Computer Assisted ◽  
Screw Insertion ◽  
Pedicle Screw Insertion ◽  
Thoracic Pedicle Screws

Objective: To assess the precision and efficiency computer-assisted surgery navigation of pedicle screw insertion by standardized trainees. Methods: From September 2013 to June 2016, 360 thoracic pedicle screws were inserted into 100 patients by standardized trainees (n = 30). Screws on the left side were inserted by hands (control group), while the other side were inserted under the guidance of computer-assistant navigation system (guided group). The insertion time and volume of blood lost by each screw were retrospectively analyzed. The precision ratio was assessed by computerized tomography (CT) scan after operation. Results: The time consumed in screw insertion was significantly shorter in the guided group than that in the control group. The blood lost volume was lesser in the guided group. Post-operation CT scan revealed higher precision in the guided group than that in the control group. Conclusion: Computer-assistant navigation system facilitates the learning of standardized trainees, and reduces the time-consuming and bleeding in thoracic pedicle screw insertion.

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