Three-Dimensional Computed Tomography Assessment and Planning for Severe Lower Limb Deformities: A Case Report of Bilateral Fibular Hemimelia

Abstract

To correct a lower limb deformity, orthopedic surgeons must have an exact understanding of the deformity. In general, preoperative planning is carried out using anterior-posterior (AP) and lateral radiographs. However, for severe cases with a combination of angular and rotational deformities of the lower limb, obtaining true AP and lateral radiographs is difficult and accurate calculation of the rotational deformity from radiographs is impossible. In this report, we propose to focus on preoperative assessment using three-dimensional (3D) reconstruction images of computed tomography (CT) scans for severe lower limb deformity in a patient with bilateral fibular hemimelia type II according to the Achterman-Kalamchi classification. She underwent bifocal deformity corrections of the bilateral tibiae using Taylor spatial frames in combination with the Ilizarov external fixator. Complete bony union was achieved, without angular deformity or limb length discrepancy.

Individualized reconstruction for severe periprosthetic fractures around the tumor prosthesis of knee under assistance of 3D printing technology

“…From preoperative design to operative simulation, from individual customization of operative guide plate to the customization of the individual implant, all of these applications have been reported to enhance the accuracy and individuation of orthopedic surgeries. [ 4 – 9 ] The biggest advantage of this technology is to provide a platform for both doctors and engineers to communicate thoroughly as well as to represent the types and relations of fracture positions accurately. [ 10 , 11 ] In this study, we have explored a novel method for design of the femur part in a patient with complex knee tumor PFF, which has not been reported by others.…”

Technical Requirements for Na18F PET Bone Imaging of Patients Being Treated Using a Taylor Spatial Frame

“…However, CT (Fig 1B) is the preferred method for imaging compound fractures (2). Assessment using CT greatly improves visualization of the fracture site and bone remodeling (3). Na 18 F is a well-known bone tracer and has been Food and Drug Administration-approved since 1972.…”