scholarly journals Spinal fixation for lumbar spondylolysis using pedicle screw and hook

2008 ◽  
Vol 14 (1) ◽  
pp. 140-144
Author(s):  
Fumiaki OKADA
Keyword(s):  
Pedicle Screw ◽  
Spinal Fixation ◽  
Lumbar Spondylolysis

Direct Repair of Lumbar Spondylolysis by Segmental Pedicle Screw-Intralaminar Hook Construct

2011 ◽  
Vol 11 (10) ◽  
pp. S101
Author(s):  
Cagatay Ozturk ◽  
Ahmet Alanay ◽  
Azmi Hamzaoglu
Keyword(s):  
Pedicle Screw ◽  
Direct Repair ◽  
Lumbar Spondylolysis

scholarly journals Study on clinical effects of pedicle screw combined with immobilized implantation bone by wirerope and hallow compression screw immobilization in treating spondylolysis of lumbar vertebra of multiple segments of adults

2020 ◽  
Vol 6 (3) ◽  
pp. 19
Author(s):  
Dongdong Zhao ◽  
Feng Li ◽  
Yao Wu ◽  
Xiaoyan Zhang
Keyword(s):  
Pedicle Screw ◽  
Screw Fixation ◽  
Pedicle Screw Fixation ◽  
Control Group ◽  
Clinical Effects ◽  
Observation Group ◽  
Intraoperative Blood Loss ◽  
Compression Screw ◽  
Lumbar Spondylolysis ◽  
Duration Of Surgery

Objective: To observe clinical effects of pedicle screw fixation combined with cable wires and bone graft and cannulated compression screws on adult multi-segment lumbar spondylolysis.Methods: 70 cases of patients with multi-segment lumbar spondylolysis were selected in our hospital. According to different surgical schemes, these patients were divided into the observation group (35 cases) and the control group (35 cases). The observation group received pedicle screw fixation combined with cable wires and bone graft and the control group received cannulated compression screw fixation. Macnab criteria were adopted to implement a therapeutic evaluation of two groups of patients to make an observation and comparison of the excellent and good rate of surgery and a series of indicators including perioperative clinical effects, intraoperative blood loss, duration of surgery, hospital length of stay (HLOS), visual analogue scale (VAS), Oswestry disability index and Japanese Orthopaedic Association (JOA) score.Results: The excellent and good rate of the observation group was 97.14%, and that of the control group was 82.86%, the difference between two groups was statistically significant (χ2 = 6.248, p = .012). The differences in intraoperative blood loss, duration of surgery and HLOS between two groups were statistically significant (t = -4.55, t = -4.55, t = -4.55; p < .05). Oswestry index, VAS score and JOA score of the observation group were (2.4 ± 0.9), (28.5 ± 6.4) and (27.1 ± 3.1) respectively, and these of the control group were (3.5 ± 1.2), (37.1 ± 7.8) and (21.3 ± 2.7) respectively, the differences between two groups were statistically significant (t = 4.338, t = 5.043, t = 8.347, p < .05).Conclusions: Pedicle screw combined with immobilized implantation bone by wirerope has an excellent clinical effect on the treatment of adult multi-segment lumbar spondylolysis, and it has a series of advantages such as fast postoperative recovery, small surgical trauma and so on. In addition, this technique can also restore the stability of spinal segments and relieve pains to a greater degree.

Retrieval of retained Jamshidi needle fragments during minimally invasive surgery

2011 ◽  
Vol 14 (5) ◽  
pp. 681-684 ◽  
Author(s):  
Michael Y. Wang ◽  
Spencer Block
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Pedicle Screw ◽  
Invasive Surgery ◽  
Open Surgery ◽  
Intraoperative Complications ◽  
Surgical Techniques ◽  
Spinal Fixation ◽  
Anatomical Structures ◽  
Surrounding Bone

As surgical techniques evolve, new intraoperative complications are prone to occur. With percutaneous spinal fixation, the control of implants and instruments can be a challenge when compared with open surgery, particularly if unintended instruments are retained or difficult to retrieve. In this report, the authors describe a case in which Jamshidi needle fragments broke within the vertebral body. Extraction of the fragments was accomplished using a small pedicle screw tap to first engage the retained metal and then to loosen the surrounding bone to allow retrieval and preservation of the anatomical structures needed to complete the intended operation. This technique may prove useful for the retrieval of deformable, cannulated metal pieces in minimally invasive surgery.

scholarly journals Role of mechanical factors in the evaluation of pedicle screw type spinal fixation devices

2005 ◽  
Vol 53 (4) ◽  
pp. 399 ◽  
Author(s):  
VK Goel ◽  
NA Ebraheim ◽  
A Biyani ◽  
S Rengachary ◽  
A Faizan
Keyword(s):  
Pedicle Screw ◽  
Spinal Fixation ◽  
Fixation Devices ◽  
Mechanical Factors ◽  
Spinal Fixation Devices

scholarly journals Diffuse reflectance spectroscopy accurately identifies the pre-cortical zone to avoid impending pedicle screw breach in spinal fixation surgery

2019 ◽  
Vol 10 (11) ◽  
pp. 5905 ◽  
Author(s):  
Gustav Burström ◽  
Akash Swamy ◽  
Jarich W. Spliethoff ◽  
Christian Reich ◽  
Drazenko Babic ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Spinal Fixation ◽  
Cortical Zone

scholarly journals Patient-Specific Templates for Pedicle Screw Insertion in Spinal Fixation Surgery

10.29007/kbf7 ◽  
2018 ◽  
Author(s):  
Mahmoud Hafez ◽  
Mohamed Fouda
Keyword(s):  
Pedicle Screw ◽  
3D Model ◽  
Pedicle Screws ◽  
Ct Scans ◽  
Patient Specific ◽  
Scoliosis Surgery ◽  
Spinal Fixation ◽  
Screw Insertion ◽  
Pedicle Screw Insertion ◽  
Surgery Patient

The increased use of pedicle screws in scoliosis creates a challenge for accurate and safe placement ofscrew within the pedicle during the scoliosis surgery. Patient-specific templates (PST) is a novelmethod to guide the surgeons for allocating and detecting the positions and trajectories of pediclescrews in scoliosis surgery. Based on CT-scans and according to certain protocol, this technique willallow the surgeon to construct a 3D model of spine and present the stage and vertebrae which containthe most deformed bone. With preplanned surgery on specific software, we can develop an accurateand safe position of pedicle screws and its trajectories. This method has the ability to customize theplacement and the size of each pedicle screw based on the unique morphology and landmarks of thevertebrae.

scholarly journals Multilevel Direct Repair Surgery for Three-Level Lumbar Spondylolysis

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Tetsu Arai ◽  
Koichi Sairyo ◽  
Isao Shibuya ◽  
Ko Kato ◽  
Akira Dezawa
Keyword(s):  
Computed Tomography ◽  
Low Back Pain ◽  
Back Pain ◽  
Pedicle Screw ◽  
Bony Union ◽  
Low Back ◽  
Screw Head ◽  
Direct Repair ◽  
Lumbar Spondylolysis ◽  
Rod System

A 45-year-old man presented to our clinic requesting evaluation for surgical treatment of chronic low back pain of more than 20 years duration. He was diagnosed with 3-level lumbar spondylolysis at L3–5. Direct repair using the pedicle screw and hook-rod system was conducted for all three levels. After the surgery, his low back pain completely disappeared. Six months later, he felt discomfort and heard a metallic sound as he twisted his trunk. Computed tomography and radiography indicated that the hook head for L3 and the screw head for L4 were interfering with each other, causing the sound. We confirmed bony union at L3 and removed the L3 system. Surgeons should be aware of such complications if direct repair using a pedicle screw and hook-rod system is conducted for multilevel spondylolysis.

Is Conventional Radiography Sufficient for Postoperative Analysis of Pedicle Screw Placement in Thoracic and Lumbosacral Spinal Fixation?

2014 ◽  
Vol 24 (4) ◽  
pp. 233-236
Author(s):  
Ali Haghnegahdar ◽  
Hadi Niknam ◽  
Abdolkarim Rahmanian ◽  
Mohammad-Hadi Bagheri ◽  
Ali Razmkon ◽  
...  
Keyword(s):  
Pedicle Screw ◽  
Conventional Radiography ◽  
Screw Placement ◽  
Spinal Fixation ◽  
Pedicle Screw Placement

scholarly journals Intraoperative cone beam computed tomography is as reliable as conventional computed tomography for identification of pedicle screw breach in thoracolumbar spine surgery

2020 ◽  
Author(s):  
Gustav Burström ◽  
Paulina Cewe ◽  
Anastasios Charalampidis ◽  
Rami Nachabe ◽  
Michael Söderman ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pedicle Screw ◽  
Negative Predictive Value ◽  
Spine Surgery ◽  
Cone Beam Computed Tomography ◽  
Predictive Value ◽  
Pedicle Screws ◽  
Ct Scans ◽  
Cone Beam ◽  
Spinal Fixation

Abstract Objectives To test the hypothesis that intraoperative cone beam computed tomography (CBCT) using the Allura augmented reality surgical navigation (ARSN) system in a dedicated hybrid operating room (OR) matches computed tomography (CT) for identification of pedicle screw breach during spine surgery. Methods Twenty patients treated with spinal fixation surgery (260 screws) underwent intraoperative CBCT as well as conventional postoperative CT scans (median 12 months after surgery) to identify and grade the degree of pedicle screw breach on both scan types, according to the Gertzbein grading scale. Blinded assessments were performed by three independent spine surgeons and the CT served as the standard of reference. Screws graded as Gertzbein 0 or 1 were considered clinically accurate while grades 2 or 3 were considered inaccurate. Sensitivity, specificity, and negative predictive value were the primary metrics of diagnostic performance. Results For this patient group, the negative predictive value of an intraoperative CBCT to rule out pedicle screw breach was 99.6% (CI 97.75–99.99%). Among 10 screws graded as inaccurate on CT, 9 were graded as such on the CBCT, giving a sensitivity of 90.0% (CI 55.5–99.75%). Among the 250 screws graded as accurate on CT, 244 were graded as such on the CBCT, giving a specificity of 97.6% (CI 94.85–99.11%). Conclusions CBCT, performed intraoperatively with the Allura ARSN system, is comparable and non-inferior to a conventional postoperative CT scan for ruling out misplaced pedicle screws in spinal deformity cases, eliminating the need for a postoperative CT. Key Points • Intraoperative cone beam computed tomography (CT) using the Allura ARSN is comparable with conventional CT for ruling out pedicle screw breaches after spinal fixation surgery. • Intraoperative cone beam computed tomography can be used to assess need for revisions of pedicle screws making routine postoperative CT scans unnecessary. • Using cone beam computed tomography, the specificity was 97.6% and the sensitivity was 90% for detecting pedicle screw breaches and the negative predictive value for ruling out a pedicle screw breach was 99.6%.

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