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Article
Open Access“It’s Time to see What I Can Do”: A Mixed-Methods Investigation into Trajectories of Resilience in Adolescents during the COVID-19 Pandemic
There is a concern that adolescent mental well-being and resilience has been adversely affected by the COVID-19 pandemic. Consequently, the aim of the current investigation was to track adolescents’ resilience...
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Article
The influence of osteophyte depiction in CT for patient-specific guided hip resurfacing procedures
An accurate fit of a patient-specific instrument guide during an intervention is one of the critical factors affecting accuracy of the surgical procedure. In this study, we investigated how well osteophytes, w...
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Article
Analyzing shoulder translation with navigation technology
Asymmetric stress imposed on the shoulder can lead to anterior shoulder instability in young athletes who perform repetitive overhead motions. A common treatment, surgical anterior capsule tightening, assumes ...
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Article
Microvascularity, blood flow and tissue structure at the subchondral plate using an X-ray fluorescence technique
The measurement of blood flow and blood in bone and cartilaginous tissues is crucial to understanding of the development of various diseases, but it presents a formidable technical challenge. We have therefore...
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Chapter and Conference Paper
Computer–Assisted Deformity Correction Using the Ilizarov Method
The Taylor spatial frame is a fixation device used to implement the Ilizarov method of bone deformity correction to gradually distract an osteotomized bone at regular intervals, according to a prescribed sched...
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Chapter and Conference Paper
Hardware-Assisted 2D/3D Intensity-Based Registration for Assessing Patellar Tracking
The problem in 2D/3D intensity-based registration of computed tomography (CT) images is to find a pose such that a digitally reconstructed radiograph (DRR) of the 3D image matches a given 2D image. Generating ...
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Chapter and Conference Paper
Wrist Kinematics from Computed Tomography Data
Three-dimensional (3-d) surface models of human carpal bones obtained from Computed Tomography (CT) were used to investigate their kinematic behavior throughout the entire physiological range of motion of the ...
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Chapter and Conference Paper
Two Bone Fragment Manipulation in Computer-Assisted Preoperative Planning: Restoration of the Radial Bow
Distal radius fractures are the most common fracture seen in hospital emergency departments. While most patients have a good outcome, a small percentage of fractures heal in a displaced position (malunion), wh...
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Chapter and Conference Paper
Computer Assisted Alignment of the Oxford Unicompartmental Knee Arthroplasty: The Kingston Experience with Three Techniques
Accuracy and precision of inserting joint implants is essential for successful long-term prosthetic function. Clinical and radiographic assessment of Oxford unicompartmental knee arthroplasty using 3 computer-...
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Chapter and Conference Paper
Accuracy of a Fluoroscopy Technique for Assessing Patellar Tracking
Accuracy of a novel fluoroscopy-based method of assessing patellar tracking was determined by comparing the pattern of patellar motion with respect to orientation (flexion, internal rotation, and lateral tilt)...
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Chapter and Conference Paper
Computer-Assisted Correction of Bone Deformities Using a 6-DOF Parallel Spatial Mechanism
The Ilizarov method is used to correct bone deformities by using an adjustable frame to simultaneously perform alignment and distraction of an open-wedge osteotomy. We have adapted the idea of fixation-based s...
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Chapter and Conference Paper
Affine Transformations and Atlases: Assessing a New Navigation Tool for Knee Arthroplasty
We propose a new guidance paradigm for computer-assisted orthopadic surgery, based on nonrigid registration of a patient to a standard atlas model. Such a method would save costs and time compared to CT-based ...
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Chapter and Conference Paper
Minimally Invasive Excision of Deep Bone Tumors
An osteoid osteoma is a small, benign, active, painful osteoblastic bone lesion. To effect a cure the entire nidus must be removed, because residual nidus is associated with recurrence of the osteoid osteoma [...
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Chapter and Conference Paper
From Scans to Sutures: Robotics Methods for Computer-Enhanced Surgery
This paper is a brief review of robotics methods that have been clinically tested in systems which aid orthopedic surgeons in planning and performing surgical procedures. These systems have provided surgeons w...
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Chapter and Conference Paper
A Strain-Energy Model of Passive Knee Kinematics for the Study of Surgical Implantation Strategies
A mathematical model for studying the passive kinematics of condylar-type total knee prostheses can be useful in planning and performing total joint replacement. If the insertion location and neutral length of...
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Chapter and Conference Paper
Fixation-Based Surgery: A New Technique for Distal Radius Osteotomy
Fixation-based surgery is a new technique for achieving difficult corrections in some orthopedic procedures. The method is premised on using a fixation device, such as a fracture-fixation plate, during the ali...
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Chapter and Conference Paper
Fiducial Registration from a Single X-Ray Image: A New Technique for Fluoroscopic Guidance and Radiotherapy
Fiducial registration is useful both in applications where other registration techniques have poor performance and for validation of new registration techniques. Registration of 3D CT or MR images to 2D X-ray ...
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Chapter and Conference Paper
Spotlights: A Robust Method for Surface-Based Registration in Orthopedic Surgery
Fast, simple and effective registration methods are needed in a wide variety of computer-assisted surgical procedures in which readily locatable anatomical landmarks are not available. Surface-based least-squa...
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Chapter and Conference Paper
Interactive visual and force rendering of human-knee dynamics
The kinematics and force/displacement relationships of elements of biological joints are notoriously difficult to understand. In particular, the human knee has bearing surfaces of complex geometry that are con...
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Chapter and Conference Paper
A surgical planning and guidance system for high tibial osteotomies
A three-dimensional pre-surgical planner and image-guided surgery system for high tibial osteotomy has been developed. The planning software permits a surgeon to establish the tibial axes, plan the corrective ...