Stabilisation of a cranial cervical vertebral fracture using a <scp>3D</scp>‐printed patient‐specific drill guide

Oxley, Bill; Behr, Sébastien

doi:10.1111/jsap.12469

Cited by 37 publications

(52 citation statements)

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“…Vertebral fixation is achieved by implants, such as pins or screws, placed within the pedicles or vertebral bodies and polymethylmethacrylate, stainless, or titanium plates . These surgical instruments provide rigid and immediate intervertebral fixation and lead to satisfactory outcomes in most clinical cases but carry a potential risk of iatrogenic injury to vital structures, including the vasculature, nerve roots, and spinal cord . In man, free‐hand thoracic pedicle screw insertion has been associated with cortical perforation of the pedicles in 44.4%–63.8% of cases .…”

Section: Introductionmentioning

confidence: 99%

“…Drill guide templates, which have been developed as an inexpensive and accurate method to guide spinal fixation screws in the field of neurosurgery, may be an attractive alternative in veterinary medicine. The increasing availability of computed tomography (CT) in veterinary practice and the development of computer‐aided design and computer‐aided manufacturing technology prompted us to evaluate this technology for spinal fixation surgery in dogs …”

Section: Introductionmentioning

confidence: 99%

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A novel patient‐specific drill guide template for stabilization of thoracolumbar vertebrae of dogs: cadaveric study and clinical cases

et al. 2018

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Objective: To evaluate the accuracy and safety of a novel patient-specific drill guide template for stabilizing the thoracolumbar vertebrae of dogs. Study design: Cadaveric experimental study and prospective case series. Sample population: Cadaveric canine thoracolumbar vertebral specimens (n = 3) and clinical cases of thoracolumbar spinal instability (n = 4). Methods: Computed tomography data of the thoracolumbar spines were obtained before surgery, and images were imported into imaging software. Optimum screw trajectories were selected for each vertebra, and drill guide templates were designed and fabricated with a 3-dimensional printing system. Drill guide templates were applied to cadaveric spine and clinical cases. Computed tomography imaging was performed after surgery, and planned and postoperative trajectories were compared to estimate the accuracy and safety of the drill guide templates. Results: Twenty-two drill holes were made in cadaveric spinal specimens. All drill holes were completely located in the bone. The overall mean screw deviation was 0.88 AE 0.36 mm. In clinical cases, 29 screws were placed in thoracolumbar vertebrae. Most (89.6%) of these screws were placed without evidence of vertebral canal invasion. One (3.5%) screw perforated the bone structure. The overall mean screw deviation was 1.16 AE 0.56 mm. Conclusion: Drill guide templates were useful for accurate intraoperative screw navigation in thoracolumbar fixation in small dogs. Clinical significance: The use of drill guide templates can be considered as an aid to safety and accuracy of screw placement in canine thoracolumbar instabilities.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel patient‐specific drill guide template for stabilization of thoracolumbar vertebrae of dogs: cadaveric study and clinical cases

et al. 2018

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“…These guide systems are easier to use and less expensive than computer navigation systems, provide flexibility because of their custom‐design, reduce surgical time, and are significantly more accurate in terms of residual angulation and rotation compared with computer navigation systems or conventional freehand techniques . The use of patient‐specific 3D‐printed systems have also been reported in veterinary literature in the management of fractures and arthrodesis and have been shown to allow accurate placement of bicortical pedicle screws in the caudal canine cervical vertebrae …”

Section: Introductionmentioning

confidence: 99%

Accuracy of patient‐specific three‐dimensional‐printed osteotomy and reduction guides for distal femoral osteotomy in dogs with medial patella luxation

et al. 2018

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Objective: To compare precorrectional and postcorrectional femoral alignment following distal femoral osteotomy using patient-specific 3-dimensional (3D)-printed osteotomy and reduction guides in vivo and ex vivo. Study design: Prospective study. Sample population: Ten client-owned dogs and matching 3D-printed plastic bone models. Methods: Distal femoral osteotomy was performed via a standard approach using osteotomy and reduction guides developed with computer-aided design software prior to 3D-printing. Femoral osteotomy and reduction was also performed on 3Dprinted models of each femur with identical reprinted guides. Femoral varus angle (FVA) and femoral torsion angle (FTA) were measured on postoperative computed tomographic images by 3 observers. Results: In vivo, the mean difference between target and achieved postoperative was 2.29 (±2.29 , P = .0076) for the FVA, and 1.67 (±2.08 , P = .300) for the FTA. Ex vivo, the mean difference between target and achieved postoperative was 0.29 (±1.50 , P = .813) for the FVA, and −2.33 (±3.21 , P = .336) for the FTA. Intraobserver intraclass correlation coefficients (ICC; 0.736-0.998) and interobserver ICC (0.829 to 0.996) were consistent with an excellent agreement. Conclusion: Use of 3D-printed osteotomy and reduction guides allowed accurate correction of FTA in vivo and both FVA and FTA ex vivo. Clinical significance: Use of 3D-printed osteotomy and reduction guides may improve the accuracy of correction of femoral alignment but warrant further evaluation of surgical time, perioperative complications, and patient outcomes compared with conventional techniques.

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“…However, the ability of computer‐aided design (CAD) software to manipulate 3D structures offers the potential for virtual surgical planning and rehearsal as well as more complex processes such as the creation of 3D‐printable patient‐specific surgical guides and implants. Recent reports describe the use of a 3D‐printed patient‐specific drill guide for placement of bicortical pedicle screws in a canine cervical vertebra . Reports in the human literature detail the use of 3D‐printed patient‐specific osteotomy and reduction guides in the treatment of radial, tibial, and scaphoid fracture malunions .…”

Section: Introductionmentioning

confidence: 99%

A 3‐dimensional‐printed patient‐specific guide system for minimally invasive plate osteosynthesis of a comminuted mid‐diaphyseal humeral fracture in a cat

Oxley

2018

Veterinary Surgery

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Stabilisation of a cranial cervical vertebral fracture using a 3D‐printed patient‐specific drill guide

Cited by 37 publications

References 0 publications

A novel patient‐specific drill guide template for stabilization of thoracolumbar vertebrae of dogs: cadaveric study and clinical cases

A novel patient‐specific drill guide template for stabilization of thoracolumbar vertebrae of dogs: cadaveric study and clinical cases

Accuracy of patient‐specific three‐dimensional‐printed osteotomy and reduction guides for distal femoral osteotomy in dogs with medial patella luxation

A 3‐dimensional‐printed patient‐specific guide system for minimally invasive plate osteosynthesis of a comminuted mid‐diaphyseal humeral fracture in a cat

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