Article
Health Care Sciences & Services
Pedram Rajabifard, John Edward Cunningham, Michael A. A. Johnson, Henrik Constantin Baecker, Peter Turner
Summary: This study compares the blood loss between cannulated and solid pedicle screws in patients undergoing posterior spinal fusion. The results show no significant difference in intraoperative blood loss, decrease in haemoglobin levels, and total estimated blood loss between the two groups. Preoperative thrombocytopenia is the strongest predictor for transfusion requirement.
JOURNAL OF PERSONALIZED MEDICINE
(2023)
Article
Clinical Neurology
Florian Wanivenhaus, David Ephraim Bauer, Christoph Laux, Christoph Stern, Frederic Cornaz, Oliver Wetzel, Jose Miguel Spring, Michael Betz, Mazda Farshad
Summary: This study aimed to identify preoperative parameters associated with postoperative L5 pedicle fracture after L4/5 posterior instrumented spinal fusion. The results showed that risk factors included female gender, higher pelvic incidence, sacral slope, L5 slope, L5 incidence, and lumbar lordosis postoperatively. These findings are important for surgical planning and fusion level decisions.
Review
Clinical Neurology
Min Cheol Chang, Yoo Jin Choo, Gun Woo Lee
Summary: Comparing traditional pedicle screws with cortical bone trajectory-pedicle screws in posterior lumbar fusion surgery, it was found that the cortical screw group had less blood loss and shorter operative time, with a lower total complication rate. However, these findings were based on limited, bias-prone retrospective studies.
Article
Clinical Neurology
Andrew B. Harris, Floreana N. Kebaish, Varun Puvanesarajah, Micheal Raad, Matthew W. Wilkening, Amit Jain, David B. Cohen, Brian J. Neuman, Khaled M. Kebaish
Summary: The study found that in patients with ASD, a UIV-PVA >3 degrees was associated with an increased risk for developing PJK and PJF, while UIV-RVA was not significantly associated with PJK or PJF.
Article
Medicine, General & Internal
Peng Zou, Rui Zhang, Jun-Song Yang, Er-Liang Li, Qian Zhang, Yuan-Ting Zhao
Summary: This study compared the clinical and radiological outcomes of anterior and posterior surgery for 4-level degenerative cervical myelopathy. The results showed that both approaches significantly improved the patients' quality of life, but posterior surgery had a longer operative time and higher invasiveness.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Clinical Neurology
James M. Mok, Ye Lin, Julio Castillo Tafur, Roberto Leonardo Diaz, Farid Amirouche
Summary: This study compared the stability of stand-alone LLIF with bilateral pedicle screw and rod fixation. The results showed that bilateral pedicle screws and rods had less range of motion in all three planes compared to stand-alone LLIF. In 4-level fusion, stand-alone LLIF was not equivalent to pedicle screws and rods.
Article
Clinical Neurology
Matthew J. Hagan, Sohail Syed, Owen P. Leary, Elijah M. Persad-Paisley, Yang Lin, Bryan Zheng, Belinda Shao, Hael Abdulrazeq, James Y. H. Yu, Albert E. Telfeian, Ziya L. Gokaslan, Jared S. Fridley, Adetokunbo A. Oyelese
Summary: The study suggests that the use of iCT-Nav in spinal instrumentation surgery enables high-accuracy placement of pedicle screws and reduces the need for postoperative revisions. Male patients are less likely to experience high-grade pedicle breach, while lateral or anterior breach locations are predictive of high-grade breach.
WORLD NEUROSURGERY
(2022)
Article
Medicine, General & Internal
Subum Lee, Junseok W. Hur, Jang-Bo Lee, Jin Hoon Park, Daewon Park, Sang-Jin Park, Kyoung-Tae Kim, Dae-Chul Cho
Summary: The criteria for atlantoaxial fusion were identified through comparing follow-up radiographs and CT images. Screw halos did not affect the final bone fusion, while the difference in C1-2 angles could predict bone fusion.
Review
Oncology
Andrea Perna, Amarildo Smakaj, Raffaele Vitiello, Calogero Velluto, Luca Proietti, Francesco Ciro Tamburrelli, Giulio Maccauro
Summary: This systematic review and meta-analysis compared PPSF versus OPIF in patients with SM, showing that PPSF treatment is associated with fewer complications, lower infection rates, reduced blood loss, and shorter hospital stays compared to OPIF treatment.
FRONTIERS IN ONCOLOGY
(2022)
Article
Medicine, General & Internal
Sang-Ho Kim, Ji-hyeon Kim, Ji-Won Kwon, Hak-Sun Kim, Seong-Hwan Moon, Kyung-Soo Suk, Byung-Ho Lee
Summary: This study compared the biomechanical advantages of pedicle-screw fixation and lateral-mass-screw fixation in combined anterior-posterior cervical surgeries. The results showed that the pedicle-screw fixation group had fewer patients with C2-C7 cervical lordosis less than 20 degrees at 1 year postoperatively. The pedicle-screw fixation group also had less vertical-length change and greater vertebral-body-width change compared to the lateral-mass-screw fixation group during 3 months to 1 year postsurgery. Therefore, pedicle-screw fixation provides better maintenance of cervical lordosis and protection against subsidence in combined anterior-posterior cervical surgeries, as well as promoting bone remodeling.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Clinical Neurology
Gerrard Gan, Arun-Kumar Kaliya-Perumal, Chun Sing Yu, Colum Patrick Nolan, Jacob Yoong-Leong Oh
Summary: This retrospective cohort study evaluated the accuracy and safety of cervical pedicle screw insertion under O-arm-based 3D navigation guidance. The study found that navigation technology can improve the accuracy of CPS insertion, with no incidence of neurovascular injury reported.
GLOBAL SPINE JOURNAL
(2021)
Article
Clinical Neurology
Seiichi Odate, Shunsuke Fujibayashi, Bungo Otsuki, Jitsuhiko Shikata, Naoya Tsubouchi, Ryosuke Tsutsumi, Masato Ota, Kanba Yusuke, Hiroaki Kimura, Eijiro Onishi, Shimei Tanida, Hideo Ito, Tatsuya Ishibe, Shuichi Matsuda
Summary: This study retrospectively analyzed the reoperation of misplaced pedicle screws after posterior spinal fusion, finding that neurological symptoms were the major reason for reoperation. Medial-caudal breaches and larger pedicle breaches were associated with incomplete resolution of neurological symptoms.
Article
Clinical Neurology
Maximilian Lenz, Arne Harland, Philipp Egenolf, Akanksha Perera, Lenhard Pennig, Jan Bredow, Peer Eysel, Max Joseph Scheyerer
Summary: The objective of this study was to introduce a bilateral safe zone for C1 pedicle screws, aiming to provide safety during surgery and prevent screw perforation. Results showed that measurements of female patients were generally smaller with significant differences from male patients, highlighting the importance of detailed knowledge of individual C1 anatomy and preoperative measurement in operative planning.
EUROPEAN SPINE JOURNAL
(2021)
Article
Clinical Neurology
Yoji Ogura, Steven D. Glassman, Daniel Sucato, M. Timothy Hresko, Leah Y. Carreon
Summary: The study aimed to evaluate the impact of instrumentation type on the incidence of proximal junctional kyphosis (PJK) following posterior spinal fusion for adolescent idiopathic scoliosis. Results showed that PJK was significantly more common in all-pedicle screw constructs, with higher thoracic kyphosis before surgery. Using hooks at the upper instrumented vertebrae might be a potential treatment strategy to limit the occurrence of PJK.
GLOBAL SPINE JOURNAL
(2021)
Article
Orthopedics
Robert K. Eastlack, Pierce D. Nunley, Kornelis A. Poelstra, Alexander R. Vaccaro, Marcus Stone, Larry E. Miller, Pierre Legay, Julien Clin, Aakash Agarwal
Summary: This study used finite element analysis to compare the biomechanical properties of a novel posterior fixation device with a conventional pedicle screw system in lumbar fusion surgery. The results showed that the new device can effectively reduce the range of motion of the spine and provide comparable stability to the traditional screw system when used with different interbody devices.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2023)