A Hybrid 3D-2D Image Registration Framework for Pedicle Screw Trajectory Registration between Intraoperative X-ray Image and Preoperative CT Image.

Pedicle screw insertion is considered a complex surgery among Orthopaedics surgeons. Exclusively to prevent postoperative complications associated with pedicle screw insertion, various types of image intensity registration-based navigation systems have been developed. These systems are computation-intensive, have a small capture range and have local maxima issues.

Realistic C-arm to pCT registration for vertebral localization in spine surgery : A hybrid 3D-2D registration framework for intraoperative vertebral pose estimation.

Spine surgeries are vulnerable to wrong-level surgeries and postoperative complications because of their complex structure. Unavailability of the 3D intraoperative imaging device, low-contrast intraoperative X-ray images, variable clinical and patient conditions, manual analyses, lack of skilled technicians, and human errors increase the chances of wrong-site or wrong-level surgeries. State of the art work refers 3D-2D image registration systems and other medical image processing techniques to address the complications associated with spine surgeries.

Cryptococcal spondylodiscitis in a non-HIV patient with CD4 lymphocytopenia.

Infections that affect the intervertebral discs and vertebrae are known as spondylodiscitis. Such infections are commonly caused by pyogenic organisms, particularly and hematogenous spread is the most common route. Non-pyogenic infections include and Brucellosis.

Operation theatre protocol for COVID-19 cases requiring orthopaedic surgery: A workflow without altering the existing infrastructure.

Introduction: The surge in the number of trauma cases following relaxation of lockdowns in the backdrop of COVID-19 pandemic, has strained the existing infrastructure to cater to these patients and also prevent the spread of infection. Moreover, with the rise of newer strains, the period ahead has to be tread carefully to prevent resurgence of infections. There have been recommendations regarding the ideal setup to operate orthopaedic cases in this pandemic scenario.

Accuracy and reliability of spinal navigation: An analysis of over 1000 pedicle screws.

Purpose: To estimate the rate of pedicle screw malpositioning associated with placing pedicle screws using intraoperative computed tomography (CT)-guided spinal navigation.

Methods: We analysed the records of 219 patients who underwent pedicle screw fixation using O-arm-based navigation. Screw placement accuracy was evaluated on intraoperative CT scans acquired after pedicle screw insertion.