Neurosurg Focus 2021 May;50(5):E1
5Department of Oncology, Queen's University, Kingston, Ontario, Canada.
Eur J Appl Physiol 2021 May 6. Epub 2021 May 6.
Department of Chiropractic Medicine, Integrative Spinal Research ISR, Balgrist University Hospital, Balgrist Campus, Lengghalde 5, CH-8008, Zürich, Switzerland.
Background: The spine has a complex motor control. Its different stabilization mechanisms through passive, active, and neurological subsystems may result in spinal stiffness. To better understand lumbar spinal motor control, this study aimed to measure the effects of increasing the axial load on spinal stiffness. Read More
Vet Surg 2021 May 6. Epub 2021 May 6.
Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
Objective: To evaluate the change in ex vivo biomechanical properties of the canine cervical spine, due to an intervertebral cage, both as a stand-alone device and in combination with plates.Study Design: Experimental ex vivo study.Animals: Cervical spinal segments (C5-C7) from eight canine cadavers. Read More
Orthop Traumatol Surg Res 2021 May 2. Epub 2021 May 2.
Aix-Marseille Université, APHM, CNRS, ISM, CHU Timone, Unité de chirurgie rachidienne, 264 rue Saint-Pierre, 13005 Marseille, France. Electronic address:
Introduction Spinal malalignment can greatly impact a patient's quality of life. Various sagittal parameters are used as realignment goals; however, about 50% of patients end up being under-corrected postoperatively. To improve the correction, prebent rods are available with a radius of curvature corresponding to the patient's "ideal" sagittal alignment. Read More
Orthop Surg 2021 May 4. Epub 2021 May 4.
Department of Orthopedics, Chinese PLA General Hospital, Beijing, China.
Objective: To introduce a new robotic navigation system that assists pedicle screw implantation and verify the accuracy and stability of the system.Methods: Pedicle screw placements were performed on the thoracic vertebrae (T)9-Lumbar vertebrae (L)5 thoracolumbar vertebrae of cadavers using robotic guidance. The operative duration, puncture success, correction, and correction time were assessed. Read More
Department of Orthopaedic Surgery, Tianjin Medical University General Hospital, Tianjin, China.
Objective: To investigate the biomechanical effect of different intervertebral reconstructive heights on adjacent segments following C /C anterior cervical discectomy and fusion (ACDF) through finite element analysis.Methods: A finite element model of intact C -C segments was developed and validated for the present study. Five additional C -C postoperative models were constructed with 100%, 125%, 150%, 175%, and 200% of the benchmark height of C /C on the basis of the intact model. Read More