An in vitro study was done to test the accuracy and functionality of computer-assisted surgery in pelvic orthopaedic surgery. The study was done on two fresh hips from one cadaver. In each hip, 10 titanium marker screws were inserted through standard pelvic osteotomy incisions. After a computed tomography scan was obtained the data were introduced into the navigation system. For the accuracy measurements the location of the center of the spherical heads of the marker screws was determined relative to a reference base attached to the pelvis using a special pointer that corresponded to the spherical head of the screws. A randomized trial was done with two surgeons to test the accuracy of two different anatomy-based registration protocols. The deviation between the virtual position of the marker screws in the pelvis, calculated by the computer after each anatomy based registration, and the real position were compared for each registration. Accuracy is not only related to the distance of the computed tomography slices and the necessary computed tomography field of view but also depends on the location of the point on the pelvis.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Objective: Aim: To investigate the peculiarities of deviations of preoperative values of biochemical markers of inflammation in the blood serum of patients with degenerative diseases of the lumbar spine after transpedicular fixation, with a complicated postoperative course to predict the development of various postoperative complications.
Patients And Methods: Materials and Methods: The content of glycoproteins (GP), sialic acids (SA), C-reactive protein (CRP), seroglicoids (SG), haptoglobin (HG), Veltman`s test (VT) were investigated. The results are comparable by the Student-Fisher method.
Clinical and Radiological Outcomes of Extreme Lateral Interbody Fusion (XLIF) in the Treatment of Lumbar Spondylodiscitis: A Multi-center Study.
Cureus
December 2024
Orthopedics, Hospital Putrajaya, Putrajaya, MYS.
Introduction Lumbar pyogenic spondylodiscitis is a challenging and rare spinal infection with high morbidity, particularly in patients with comorbidities. While the extreme lateral interbody fusion (XLIF) technique is established in treating degenerative spinal conditions, its efficacy in managing spondylodiscitis is less well-studied. This study aims to evaluate the clinical and radiographic outcomes of the XLIF approach combined with posterior instrumentation in patients with lumbar spondylodiscitis.
View Article and Find Full Text PDFspondylitis in a non-tropical immunocompetent patient: a case report and review of the literature.
Front Med (Lausanne)
January 2025
Department of Spine Surgery, Wuhan Fourth Hospital, Wuhan, China.
Background: Tropical Candida spondylitis is an uncommon cause of lower back pain in patients, especially in non-tropical areas or in patients not at risk of immunocompromise.
Case Presentation: A 65-year-old woman presented with a six-month history of poorly managed low back pain, now accompanied by numbness and pain in both lower extremities. Her medical history was significant for tertiary hypertension.
Demographic and historical processes influencing Cochliomyia hominivorax (Diptera: Calliphoridae) population structure across South America.
Parasit Vectors
January 2025
Department of Genetics and Evolutionary Biology. Institute of Biosciences, University of São Paulo, Rua Do Matão, 277, São Paulo, SP, 05508-090, Brazil.
Background: In this study, we investigated the genetic variability and population structure of the New World screwworm fly Cochliomyia hominivorax. We tested the hypothesis that the species exhibits a center-periphery distribution of genetic variability, with higher genetic diversity in central populations (e.g.
View Article and Find Full Text PDFFreehand Placement of a Transiliac-Transsacral Screw for Fixation of Posterior Pelvic Ring Injuries.
Orthop Surg
December 2024
Department of Orthopaedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing, China.
Objective: There are many advantages to stabilize the posterior pelvic ring injuries with a transiliac-transsacral (TITS) screw percutaneously. To identify the correct entry point and insert a guidewire accurately for a TITS screw, we propose a method of specifying the optimal entry point, and introduce a technique of enabling freehand placement of a guidewire with fluoroscopic guidance.
Methods: In this retrospective study, 116 patients who underwent pelvic CT scans and pelvic lateral radiographs at our institution from January 2020 to April 2022 were enrolled.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!