Fluoroscopy-based navigation system in spine surgery
نویسندگان
چکیده
The variability in width, height, and spatial orientation of a spinal pedicle makes pedicle screw insertion a delicate operation. The aim of the current paper is to describe a computer-assisted surgical navigation system based on fluoroscopic X-ray image calibration and three-dimensional optical localizers in order to reduce radiation exposure while increasing accuracy and reliability of the surgical procedure for pedicle screw insertion. Instrumentation using transpedicular screw fixation was performed: in a first group, a conventional surgical procedure was carried out with 26 patients (138 screws); in a second group, a navigated surgical procedure (virtual fluoroscopy) was performed with 26 patients (140 screws). Evaluation of screw placement in every case was done by using plain X-rays and post-operative computer tomography scan. A 5 per cent cortex penetration (7 of 140 pedicle screws) occurred for the computer-assisted group. A 13 per cent penetration (18 of 138 pedicle screws) occurred for the non computer-assisted group. The radiation running time for each vertebra level (two screws) reached 3.5 s on average in the computer-assisted group and 11.5 s on average in the non computer-assisted group. The operative time for two screws on the same vertebra level reaches 10 min on average in the non computer-assisted group and 11.9 min on average in the computer-assisted group. The fluoroscopy-based (two-dimensional) navigation system for pedicle screw insertion is a safe and reliable procedure for surgery in the lower thoracic and lumbar spine.
منابع مشابه
Current Navigation Modalities in Spine Surgery With a Focus on the Use of the O-arm in Deformity Surgery
2 Division of Orthopaedic Surgery, The Children’s Hospital of Philadelphia, Philadelphia, PA Image guidance in spine surgery has evolved from static modalities such as the plain radiograph to navigation systems such as the O-arm. Commonly used modalities include CT scan based navigation systems, 3D fluoroscopy, and most recently the O-arm. Each of these navigation systems improved on the capabi...
متن کاملTotal navigation in spine surgery; a concise guide to eliminate fluoroscopy using a portable intraoperative-CT 3D navigation system
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Accuracy of Pedicle Screw Insertion Using Fluoroscopy-Based Navigation-Assisted Surgery : Computed Tomography Postoperative Assessment in 96 Consecutive Patients
OBJECTIVE Two-dimensional fluoroscopy-based computerized navigation for the placement of pedicle screws offers the advantage of using stored patient-specific imaging data in providing real-time guidance during screw placement. The study aimed to describe the accuracy and reliability of a fluoroscopy-based navigation system for pedicle screw insertion. METHODS A total of 477 pedicle screws wer...
متن کاملAccuracy and Safety in Pedicle Screw Placement in the Thoracic and Lumbar Spines : Comparison Study between Conventional C-Arm Fluoroscopy and Navigation Coupled with O-Arm® Guided Methods
OBJECTIVE The authors performed a retrospective study to assess the accuracy and clinical benefits of a navigation coupled with O-arm® system guided method in the thoracic and lumbar spines by comparing with a C-arm fluoroscopy-guided method. METHODS Under the navigation guidance, 106 pedicle screws inserted from T7 to S1 in 24 patients, and using the fluoroscopy guidance, 204 pedicle screws ...
متن کاملIntra-operative Iso-C3D navigation for pedicle screw instrumentation of hangman's fracture: a case report.
Pedicle screw instrumentation of the upper cervical spine is rarely performed in trauma surgery because of the risk of damaging neurovascular structures. We report successful treatment of an unstable hangman's fracture with posterior pedicle screw fixation using Iso-C3D fluoroscopy-based computer navigation guidance. Postoperative computed tomographic images confirmed accurate placement of the ...
متن کاملClinical experience with a fluoroscopy-based guidance system in orthopaedic surgery
Computer assisted systems are being used in orthopaedic surgery for many years. Different advantages were described in the literature, among these the most important are an improvement in accuracy of implant positioning and a reduction of ionising radiation [1]. However, most published works describe the use of such systems in spine and pelvis surgery. Its use in general orthopaedic surgery and...
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ورودعنوان ژورنال:
- Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine
دوره 221 7 شماره
صفحات -
تاریخ انتشار 2007