Objectives:: The purpose of this study was to describe and compare the main imagenological features of mandibular ameloblastomas and odontogenic keratocyst (OKC) using panoramic radiograph (PR) and CT.
Methods:: The sample consisted of nine cases of ameloblastomas and nine cases of OKC. PR and CT images were analyzed according to shape, internal structure, borders, associated unerupted tooth, root resorption, expansion and perforation of cortical bones.
Results:: PR evaluation allowed the identification of the lesion's location, presence of sclerosis in the periphery, presence of associated non-erupted tooth and expansion of the mandible's lower border cortical bone. CT was more accurate than PR in the assessment of the lesion shape, presence of inner bone septa, root resorption, buccolingual expansion and rupture of cortical bone. Most cases of ameloblastoma and OKC presented buccolingual expansion and erosion of cortical bone. Only ameloblastomas showed tooth root resorption.
Conclusions:: Although PR is very helpful and widely used, CT provides more precise information on buccolingual expansion, calcification, bone septa, perforation of cortical bones and tooth resorption, features that are frequently underdescribed in the literature, particularly in OKC.
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http://dx.doi.org/10.1259/dmfr.20170288 | DOI Listing |
Chem Pharm Bull (Tokyo)
December 2024
Drug Discovery Research Department, Kyoto Pharmaceutical Industries, Ltd.
Osteoporosis is treated with oral and parenteral resorption inhibitors and parenteral osteogenic drugs. However, orally active small-molecule osteogenic drugs are not clinically available. Natural coumarin derivatives, such as osthole, exert osteoblastogenic effects.
View Article and Find Full Text PDFIn percutaneous pelvic trauma surgery, accurate placement of Kirschner wires (K-wires) is crucial to ensure effective fracture fixation and avoid complications due to breaching the cortical bone along an unsuitable trajectory. Surgical navigation via mixed reality (MR) can help achieve precise wire placement in a low-profile form factor. Current approaches in this domain are as yet unsuitable for real-world deployment because they fall short of guaranteeing accurate visual feedback due to uncontrolled bending of the wire.
View Article and Find Full Text PDFJBJS Essent Surg Tech
December 2024
Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, Connecticut.
Background: For complete disruption of the posterolateral corner (PLC) structures, operative treatment is most commonly advocated, as nonoperative treatment has higher rates of persistent lateral laxity and posttraumatic arthritis. Some studies have shown that acute direct repair results in revision rates upwards of 37% to 40% compared with 6% to 9% for initial reconstruction. In a recent study assessing the outcomes of acute repair of PLC avulsion injuries with 2 to 7 years of follow-up, patients with adequate tissue were shown to have a much lower failure rate than previously documented.
View Article and Find Full Text PDFChin J Traumatol
December 2024
Department of Orthopaedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China. Electronic address:
Purpose: The management of irreducible, sagittally unstable peritrochanteric fractures presents a significant challenge due to the inability to achieve closed reduction using conventional techniques. This study introduces a novel minimally invasive technique leveraging the mechanical advantage principle with long, angled hemostatic clamps.
Methods: A retrospective review was performed on 16 patients who sustained sagittally unstable peritrochanteric fractures and underwent a percutaneous hemostatic clamp leverage reduction procedure.
Cureus
November 2024
Orthopaedics, Virginia Commonwealth University School of Medicine, Richmond, USA.
Distal femoral anterior cortical perforation is a rare complication of intramedullary nailing for proximal femur fractures. Awareness and intraoperative preventive measures are key to minimizing the risk of this complication. We report a case of a patient who experienced an anterior cortical breach of the distal femur during routine antegrade nailing for an intertrochanteric fracture, which was attributed to a sclerotic lesion in the distal femur.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!