PediGuard®: for safer pedicle screw placement

Betz, Randal R.; Bolger, Ciarán; George, Keri

doi:10.1007/s12240-010-0035-x

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…10,11 Classic methodologies for verification of optimal placement of pedicle screws include a free-hand technique, 12 intraoperative fluoroscopy, triggered electromyography, 13 intraoperative image-based navigation, 14 and most recently, the use of a hand-held ECD. Betz et al 15 reported that screws placed with an ECD in degenerative patients showed greater efficacy. Betz et al 15 reported that screws placed with an ECD in degenerative patients showed greater efficacy.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the Pedicle Screws Placement Between Electronic Conductivity Device and Normal Pedicle Finder in Posterior Surgery of Scoliosis

Bai¹,

Niu²,

Chen³

et al. 2013

Journal of Spinal Disorders &Amp; Techniques

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Section: Discussionmentioning

confidence: 99%

Comparison of the Pedicle Screws Placement Between Electronic Conductivity Device and Normal Pedicle Finder in Posterior Surgery of Scoliosis

Bai¹,

Niu²,

Chen³

et al. 2013

Journal of Spinal Disorders &Amp; Techniques

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“…On the one hand, sensor integrated instruments like the Pedi Guard System can be used to help the surgeon to safely treat the bone, but without controlling a planned path . On the other hand, computer assisted freehand‐navigation systems enable the surgeon to operate minimally invasively and to manually transfer a surgical plan based on real time visual feedback of the relative poses of the instruments in the three dimensional‐room with respect to the human anatomy.…”

Section: Introductionmentioning

confidence: 99%

A new approach for safe planning transfer using semi‐automatically adjustable instrument guides

Jeromin

Vossel

Rauchholz

et al. 2018

Robotics Computer Surgery

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Accurate planning transfer is a prerequisite for successful operative care. For different applications, diverse computer-assisted systems have been developed and clinically evaluated. This paper presents the implementation and evaluation of a new modular concept. The approach is based on passive application specific kinematics that are semi-automatically adjusted using a universal hand-held computer controlled Smart Screw Driver. The system was realized for pedicle screw instrumentation and evaluated according to IEC 60601-1-6 (usability engineering). The accuracies of the drill holes achieved were comparable with robotic approaches, while operation time and radiation were reduced compared with conventional operation techniques. The adjustment procedure has proven high learnability and user satisfaction. The next step will be optimization of the kinematic structure and fixation to the patient in order to increase accuracies of planning transfer as well as evaluation of the overall system by medical staff in preclinical and clinical studies.

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“…To prevent these complications it is mandatory to apply the screws with the correct technique and in the direction of the pedicle. Several navigation systems, robots, and hand tools have been developed to enable correct cannulation of the pedicles [ 5 , 6 , 9 – 14 ]. Unfortunately these systems are not error-free.…”

Section: Introductionmentioning

confidence: 99%

The Mechanisms of Medial Pedicle Wall Violation: Insertion Method Is as Important as Correct Cannulation of the Pedicle

Işık

Köse

İnanmaz

et al. 2014

Advances in Orthopedics

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A cadaver study aims to determine the mechanisms of medial pedicle wall violation after a correct cannulation of the pedicle. The study presents finding out the effect of insertion angle and insertion force on medial wall violation. We used 100 lumbar pedicles of cadavers. Special wooden blocks were produced to simulate a fixed angle fault after a correct pedicle cannulation. Pedicles were divided into 4 groups: 10-degree free drive (group 10), 15-degree free drive (group 15), 10-degree push drive (group 10P), and 15-degree push drive (group 15P). After insertion of pedicle screws, laminectomies were done and the pedicles were evaluated from the inside. Pedicle complications were more in group 10P than group 10 (P = 0.009). Medial wall fracture (P = 0.002) and canal penetration were more in group 15P than group 15 (P = 0.001). Groups 10P and 15P were similar regarding medial wall fractures but canal penetration was significantly higher in group 15P (P = 0.001). Medial wall breaches can happen after correct cannulation of pedicles. Change in insertion angle is one factor but the most important factor is the use of a pushing force while inserting a screw. The pedicle seems to be extremely tolerant to insertion angulation mistakes up to 10 degrees and tends to lead the screw into the correct path spontaneously.

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PediGuard®: for safer pedicle screw placement

Cited by 3 publications

References 18 publications

Comparison of the Pedicle Screws Placement Between Electronic Conductivity Device and Normal Pedicle Finder in Posterior Surgery of Scoliosis

Comparison of the Pedicle Screws Placement Between Electronic Conductivity Device and Normal Pedicle Finder in Posterior Surgery of Scoliosis

A new approach for safe planning transfer using semi‐automatically adjustable instrument guides

The Mechanisms of Medial Pedicle Wall Violation: Insertion Method Is as Important as Correct Cannulation of the Pedicle

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