Background: Although O-arm-based navigation (ON) has been considered a better choice than the conventional freehand (FH) technique for spine surgery, clinical evidence showing the accuracy of ON compared with the FH technique is limited. The purpose of this study was to evaluate the accuracy of pedicle screw insertion under ON compared with the FH technique.
Methods: The Cochrane Library, Ovid, Web of Science, PubMed, Embase, and CNKI online databases were searched up to January 2020. Because only a few randomized controlled trials were anticipated, prospective and retrospective comparative studies were also evaluated to compare the accuracy of pedicle screw insertion between ON and FH. Statistical analysis was performed using Stata 16.0. The primary outcomes extracted from articles that met the selection criteria were expressed as odds ratios for dichotomous outcomes with a 95% confidence interval. A χ test and I statistics were used to evaluate heterogeneity.
Results: A total of 20 reviews were included in this meta-analysis without identifying additional studies from the references of published articles. These reviews included 1422 patients and 9982 screws. ON was used to insert 4797 pedicle screws and 5185 pedicle screws were inserted using the conventional FH technique with C-arm assistance. The meta-analysis showed that ON is significantly more accurate than FH pedicle screw insertion (odds ratio, 2.46; 95% confidence interval, 1.92-3.16; I = 43.4%; P = 0.021). I indicates that the studies have a moderate statistical heterogeneity; subgroup analysis decreased heterogeneity significantly.
Conclusions: Compared with conventional methods, navigation provides greater accuracy in the placement of pedicle screws, accelerates the insertion, and reduces the complications associated with screw insertion. However, it may increase exposure time to radiation, which may harm the patient's or surgeon's health.
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http://dx.doi.org/10.1016/j.wneu.2020.07.205 | DOI Listing |
J Foot Ankle Surg
January 2025
Enovis Foot & Ankle, Atlanta, GA; Georgia Institute of Technology, Atlanta, GA. Electronic address:
Orthopedic screws are widely used to achieve bone reduction, compression, and construct stability. However, the relationship between insertion torque, interfragmentary compression, and fixation strength, especially when comparing standard screws with NiTiNOL/sustained dynamic compression (SDC), has not been thoroughly investigated. This study measured insertion torque, interfragmentary compression, and fixation strength for two types of headed orthopedic devices-standard and SDC-using solid foam bone replicates and cadaver validation.
View Article and Find Full Text PDFChin J Traumatol
January 2025
Department of Emergency Surgery and Orthopaedic Surgery, Qilu Hospital of Shandong University, Jinan, 250012, China. Electronic address:
Purpose: The fixation method commonly employed worldwide for treating unstable fractures of the posterior pelvic ring is the percutaneous iliosacral screw technique. However, prolonged operation time and frequent fluoroscopies result in surgical risks. This study aimed to investigate whether a new triangulation method could reduce operative and fluoroscopy times and increase the accuracy of screw placement.
View Article and Find Full Text PDFInjury
January 2025
Department of Orthopaedic Surgery, Cedars - Sinai Medical Center, Los Angeles, CA, USA. Electronic address:
Objectives: The purpose of this study is to determine what demographic and anatomical variables affect successful placement of a superior medullary ramus screw, and how they affect the maximal diameter of that screw.
Methods: Design: Prognostic Level IV SETTING: Level I Trauma Center Patients/Participants: Two hundred consecutive patients underwent computed tomography (CT) of the pelvis. We included those patients aged 18 and older without osseous injury or abnormalities precluding measurement.
Vet Sci
January 2025
Department of Veterinary Medicine, Graduate School of Konkuk University, Seoul 05029, Republic of Korea.
This study compares the compression force of cortical screws used in lag fashion with partially threaded cannulated screws and fully threaded headless cannulated screws as fixation methods for humeral condylar fractures in dogs. Cadavers of eleven dogs weighing an average of 10.99 ± 2.
View Article and Find Full Text PDFBioengineering (Basel)
January 2025
Department of Medical, Oral and Biotechnological Sciences, "G. D'Annunzio" University of Chieti-Pescara, 66100 Chieti, Italy.
This study aimed to evaluate the biomechanical performance of two truncated cone implant designs in maxillary sinus lift (MSL) procedures using polyurethane laminas. A total of 128 implants were used. Polyurethane laminas were divided into two groups based on thickness (1 and 3 mm) and two subgroups based on density (20 and 30 pounds per cubic foot, PCF).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!