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28 papers found.
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Calibration with or without phantom for fracture risk prediction in cancer patients with femoral bone metastases using CT-based finite element models

: Florieke Eggermont, Nico Verdonschot, Yvette van der Linden, Esther Data curation: Florieke Eggermont. Formal analysis: Florieke Eggermont. Methodology: Florieke Eggermont, Nico Verdonschot, Yvette van der ... Linden, Esther Tanck. Supervision: Nico Verdonschot, Yvette van der Linden, Esther Tanck. Visualization: Florieke Eggermont. Writing ? original draft: Florieke Eggermont. Writing ? review & editing

Symmetry and spatial distribution of muscle glucose uptake in the lower limbs during walking measured using FDG-PET

Contributions Data curation: Edzo Klawer. Conceptualization: Sjoerd Kolk, Eric Visser, Nico Verdonschot, Vivian Weerdesteyn. Formal analysis: Sjoerd Kolk, Edzo Klawer, Eric Visser, Daphne Lobeek, Jan Schepers ... , Nico Verdonschot, Vivian Weerdesteyn. Funding acquisition: Nico Verdonschot, Vivian Weerdesteyn. Investigation: Sjoerd Kolk, Edzo Klawer, Eric Visser, Daphne Lobeek, Jan Schepers, Nico Verdonschot

Automated segmentation of trabecular and cortical bone from proton density weighted MRI of the knee

Patient-specific implant design and pre- and intra-operative planning is becoming increasingly important in the orthopaedic field. For clinical feasibility of these techniques, fast and accurate segmentation of bone structures from MRI is essential. However, manual segmentation is time intensive and subject to inter- and intra-observer variation. The challenge in developing...

Feasibility of A-mode ultrasound based intraoperative registration in computer-aided orthopedic surgery: A simulation and experimental study

Orthopedic Research Lab, Radboud university medical center, Netherlands. Author Contributions Conceptualization: Jasper Homminga, Andre? Sprengers, Nico Verdonschot. Data curation: Kenan Niu, Victor I ... . Sluiter. Formal analysis: Kenan Niu, Jasper Homminga, Andre? Sprengers. Funding acquisition: Nico Verdonschot. Investigation: Kenan Niu, Victor I. Sluiter. Methodology: Kenan Niu, Jasper Homminga, Andre

The peripheral soft tissues should not be ignored in the finite element models of the human knee joint

In finite element models of the either implanted or intact human knee joint, soft tissue structures like tendons and ligaments are being incorporated, but usually skin, peripheral knee soft tissues, and the posterior capsule are ignored and assumed to be of minor influence on knee joint biomechanics. It is, however, unknown how these peripheral structures influence the...

Gait symmetry and hip strength in women with developmental dysplasia following hip arthroplasty compared to healthy subjects: A cross-sectional study

. Leijendekkers, Marco A. Marra, Vivian Weerdesteyn, Nico Resources: Nico Verdonschot. Supervision: Vivian Weerdesteyn, Nico Verdonschot. Visualization: Ruud A. Leijendekkers, Marco A. Marra. Writing ± original ... draft: Ruud A. Leijendekkers, Nico Verdonschot. Writing ± review & editing: Marco A. Marra, Sjoerd Kolk, Geert van Bon, B. Wim Schreurs, Vivian Weerdesteyn. 16 / 18 17 / 18 biomechanical systems. Comput

Trochleoplasty procedures show complication rates similar to other patellar-stabilizing procedures

Purpose Trochleoplasty aims to restore patellar stability. Various techniques have been described and almost all authors report successful results. However, the procedure has a significant risk of complications. Purpose of this study was to perform a systematic review and meta-analysis of the available literature to assess the rate of complications after the various techniques...

Flexing and downsizing the femoral component is not detrimental to patellofemoral biomechanics in posterior-referencing cruciate-retaining total knee arthroplasty

original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Affiliations Petra J. C. Heesterbeek Dennis Janssen Nico Verdonschot Ate B. Wymenga 1

The ability of external immobilizers to restrict movement of the cervical spine: a systematic review

PurposeTo review the ability of various types of external immobilizers to restrict cervical spine movement.MethodsWith a systematical review of original scientific articles, data on range of motion, type of used external immobilization device and risk of bias were extracted. The described external immobilization devices were grouped and the mean restriction percentage and...

Assessment of asymmetric leg loading before and after total hip arthroplasty using instrumented shoes

Background Total hip arthroplasty is a successful surgical treatment in patients with osteoarthritis of the hip. Different questionnaires are used by the clinicians to assess functional capacity and the patient's pain, despite these questionnaires are known to be subjective. Furthermore, many studies agree that kinematic and kinetic parameters are crucial to evaluate and to...

Assessment of asymmetric leg loading before and after total hip arthroplasty using instrumented shoes

Total hip arthroplasty is a successful surgical treatment in patients with osteoarthritis of the hip. Different questionnaires are used by the clinicians to assess functional capacity and the patient's pain, despite these questionnaires are known to be subjective. Furthermore, many studies agree that kinematic and kinetic parameters are crucial to evaluate and to provide useful...

Pre-operative ambulatory measurement of asymmetric lower limb loading during walking in total hip arthroplasty patients

Background Total hip arthroplasty is a successful surgical procedure to treat hip osteoarthritis. Clinicians use different questionnaires to assess the patient’s pain and functional capacity. Furthermore, they assess the quality of gait in a very global way.This clinical evaluation usually shows significant improvement after total hip arthroplasty, however, does not provide...

Differences in the stress distribution in the distal femur between patellofemoral joint replacement and total knee replacement: a finite element study

Hans-Peter W van Jonbergen 0 Bernardo Innocenti Gian Luca Gervasi Luc Labey Nico Verdonschot 0 Department of Orthopedic Surgery, Deventer Hospital , PO Box 5001, 7400 GC, Deventer , The Netherlands

Interface micromechanics of transverse sections from retrieved cemented hip reconstructions: an experimental and finite element comparison

In finite element analysis (FEA) models of cemented hip reconstructions, it is crucial to include the cement–bone interface mechanics. Recently, a micromechanical cohesive model was generated which reproduces the behavior of the cement–bone interface. The goal was to investigate whether this cohesive model was directly applicable on a macro level. From transverse sections of...

Frictional and bone ingrowth properties of engineered surface topographies produced by electron beam technology

Background Electron beam melting (E-beam) is a new technology to produce 3-dimensional surface topographies for cementless orthopedic implants. Methods The friction coefficients of two newly developed E-beam produced surface topographies were in vitro compared with sandblasted E-beam and titanium plasma sprayed controls. Bone ingrowth (direct bone–implant contact) was determined...

Differences in the stress distribution in the distal femur between patellofemoral joint replacement and total knee replacement: a finite element study

Patellofemoral joint replacement is a successful treatment option for isolated patellofemoral osteoarthritis. However, results of later conversion to total knee replacement may be compromised by periprosthetic bone loss. Previous clinical studies have demonstrated a decrease in distal femoral bone mineral density after patellofemoral joint replacement. It is unclear whether this...

Can Orthopedic Oncologists Predict Functional Outcome in Patients with Sarcoma after Limb Salvage Surgery in the Lower Limb? A Nationwide Study

Gerjon Hannink 1 Jos Bramer 3 Sander Dijkstra 4 Paul Jutte 5 Joris Ploegmakers 5 Michiel van de Sande 4 Hendrik Schreuder 6 Nico Verdonschot 1 7 Ingrid van der Geest 6 Peter C. Ferguson 0 Department of

Can Orthopedic Oncologists Predict Functional Outcome in Patients with Sarcoma after Limb Salvage Surgery in the Lower Limb? A Nationwide Study

Hannink,2 Jos Bramer,4 Sander Dijkstra,5 Paul Jutte,6 Joris Ploegmakers,6 Michiel van de Sande,5 Hendrik Schreuder,7 Nico Verdonschot,2,8 and Ingrid van der Geest7 1Department of Rehabilitation, Radboud

Can Orthopedic Oncologists Predict Functional Outcome in Patients with Sarcoma after Limb Salvage Surgery in the Lower Limb? A Nationwide Study

Hannink,2 Jos Bramer,4 Sander Dijkstra,5 Paul Jutte,6 Joris Ploegmakers,6 Michiel van de Sande,5 Hendrik Schreuder,7 Nico Verdonschot,2,8 and Ingrid van der Geest7 1Department of Rehabilitation, Radboud