Publications by authors named "A A Nassr"
Objective: The purpose of this study was to evaluate the risk factors for loss of intraoperative correction, as measured by lumbar lordosis (LL), with an emphasis on rod characteristics.
Methods: A retrospective study identified patients at least 50 years of age who underwent instrumented fusion with an upper instrumented vertebrae (UIV) in the upper thoracic spine (T1-T6) or thoracolumbar junction (T10-L2) to the pelvis. Inclusion criteria included intraoperative x-rays that allowed for LL measurement, postop standing x-rays, and a minimum follow up of 24 months with the original rods still in place.
Background: The purpose of this study was to report on 2-year results of vertebral body tethering (VBT), performed under a Food and Drug Administration protocol, to obtain insight into outcomes and complications.
Methods: Forty prospectively enrolled patients with adolescent idiopathic scoliosis (AIS) who had a Sanders score of ≤4 or a Risser score of ≤2 underwent VBT for curves between 40° and 70°. Surgical, radiographic, and patient-reported outcomes were reviewed at a minimum 2-year follow-up.
Objective: Hounsfield units (HUs) may better predict biomechanical complications of instrumented fusion than conventional bone quality measures. Typically, noncontrast axial slices are used. This study aims to address the influence of reconstruction plane and contrast administration on measured HUs in patients undergoing lumbar spine imaging.
View Article and Find Full Text PDFThe Impact of Unilateral Transfemoral Amputation on Lumbar Bone and Muscle Quality.
Am J Phys Med Rehabil
November 2024
Objective: To examine the long-term perioperative changes in lumbar bone density, muscle size and fatty atrophy, and facet degeneration after transfemoral amputation (TFA).
Design: All patients who underwent TFA at an academic center between 2002-2022 were retrospectively identified. Patients were required to have preoperative and postoperative CT (>1 year) and regularly utilize a prosthesis.
Article Synopsis
- - Identifying bacteria in native vertebral osteomyelitis is difficult due to slow culture methods and varying accuracy of molecular diagnostics like 16S PCR and metagenomic sequencing, creating uncertainty in their clinical effectiveness.
- - A study conducted in 2023 reviewed data from January 1970 to June 2023 to evaluate the sensitivity, specificity, and diagnostic odds ratios of these molecular methods in adults suspected of having this condition, excluding certain types of osteomyelitis.
- - Out of 3403 studies reviewed, 10 were selected for analysis based on strict criteria, ultimately involving 391 patients, revealing moderate risk of bias but good applicability for diagnosing native vertebral osteomyelitis.