Aim: This paper deals with the treatment of an atrophied toothless mandible with a fixing bridge carried by two nonstandard implant systems.
Methodology: Four bicortical screws were implanted into the frontal part of the mandible and one implant on each side was placed into the distal area of the mandible as a support for a fixing bridge.
Results: During the years 2002 - 2007 the authors placed a total of 256 bicortical screw and 84 blade implants. During this period only four bicortical screws and one blade implant failed. The primary and secondary surgical success rate was therefore above 98%, while the prosthetic success rate was 100%. (Bridges which had to be re-fabricated due to implant failure were not taken into account.)
Conclusion: This approach is recommended as a highly successful and affordable option for a wide range of patients.
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http://dx.doi.org/10.4248/IJOS10030 | DOI Listing |
J Am Podiatr Med Assoc
January 2025
‡Canakkale Onsekiz Mart University Medical Faculty, Department of Orthopedics and Traumatology, Çanakkale, Turkey.
Background: The aim of study was to biomechanically compare the fixation of Jones fracture using headless cannulated screw, tension band, and two Kirschner wires.
Methods: A total of 60 fourth-generation, fifth metatarsal synthetic bone models were divided into three groups according to the fixation techniques. A vertical load, oriented from plantar to dorsal and lateral to medial, was applied to the metatarsal specimen that were potted with molding material.
J Am Podiatr Med Assoc
January 2025
*Department of Orthopedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA.
Background: Ankle fractures continue to increase in incidence and severity in an older, more challenging geriatric population. Medial malleolus fixation with partially threaded cancellous 4.0-mm screws, a common fixation method, has been shown to fail due to pullout strength.
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.
J Orthop Surg Res
January 2025
Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg- Eppendorf, Martinistraße 52, 20246, Hamburg, Germany.
Background: In atlantoaxial instabilities, posterior C1/C2 fusion using lateral mass screws (LMS) or pedicle screws (PS) in a mono- or bicortical position in the atlas is a typical treatment. The bone microstructure and positioning of the screw trajectories appear to be of significant relevance for stability.
Purpose: The aim of this study was a comparative analysis of the mechanical durability of screw fixation concerning microstructural characteristics of the trajectories of LMS and PS in mono- and bicortical position.
J Clin Med
January 2025
Department of Orthopaedics, Phramongkutklao Hospital and College of Medicine, Bangkok 10400, Thailand.
Injuries involving the Atlas (C1) and Axis (C2) vertebrae of the cervical spine present significant clinical challenges due to their complex anatomy and potential for severe neurological impairment. Traditional imaging methods often lack the detailed visualization required for precise surgical planning. This study aimed to develop high-resolution 3D models of the C1 and C2 vertebrae to perform a comprehensive morphometric analysis, identify gender differences, and assess bilateral symmetry to enhance surgical accuracy.
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