Concept

External fixation

Related publications (23)

Adjustable fixation system for neurosurgical devices

Jean-Philippe Thiran, Rémi Charrier, David Haag

The system comprises at least a support (5) to be attached to a patient by fixing means (4), said support having an outer thread (7), a first nut (9) with an inner thread (11 ) cooperating with said outer thread (7) and an anchor having a spherical bottom ...

2012

Ventricle Equilibrium Position in Healthy and Normal Pressure Hydrocephalus Brains Using an Analytical Model

Jean-Marie Drezet, Bryn Andrew Martin, Kamal Shahim

The driving force that causes enlargement of the ventricles remains unclear in case of normal pressure hydrocephalus (NPH). Both healthy and NPH brain conditions are characterized by a low transparenchymal pressure drop, typically 1 mm Hg. The present pape ...

2012

Robotic system for cervical spine surgery

Charles Baur

Background In contemporary surgical clinical practice, spinal instability is often treated with mechanical stabilization techniques in order to protect the spinal cord and nerve roots. These techniques involve placing screws in defined regions of the verte ...

2012

Accurate Internal-External Rotation Measurement in Total Knee Prostheses: a magnetic solution

Kamiar Aminian, Jenifer Cléa Miehlbradt, Arash Arami

In this work we tackled the problem of accurate measurement of internal–external (IE) rotations in the prosthetic knee. We presented a magnetic measurement system to be implanted in the knee prostheses in order to measure IE without soft tissue artifacts. ...

Elsevier2012

In vivo assessment of local effects after application of bone screws delivering bisphosphonates into a compromised cancellous bone site

Dominique Pioletti, Alireza Roshan Ghias

Background: The primary stability of cancellous screw is difficult to obtain in bone of compromised quality and failure of screw fixation is common. To overcome this problem, it is proposed to locally deliver bisphosphonate from the screw An in vivo valida ...

Elsevier2011

Intermediate temperature embrittlement of copper alloys

Andreas Mortensen, Vincent Laporte

Copper and its alloys generally display a severe reduction in ductility between roughly 300 and 600 degrees C, a phenomenon variously called 'intermediate temperature embrittlement' or 'ductility trough behaviour'. This review of the phenomenon begins by p ...

2009

Finite element analysis of strain distribution in a bone scaffold used with revision knee prosthesis

Line Aschwanden

The goal of this study is to analyze mechanical behavior of a new scaffold composed of PLA/bTCP in revision knee arhtroplasty (RKA). For this purpose, finite element models of RKA was developed to study the importance of the geometry of bones, the fixation ...

2008

Local delivery of bisphosphonate from coated orthopedic implants increases implants mechanical stability in osteoporotic rats

Dominique Pioletti, Randoald Müller, Bastian Peter

Patients with osteoporosis and joint disabilities represent a constant growing and challenging population to be treated in the musculoskeletal clinical field. Especially in the case of total hip arthroplasty, new solutions should be developed to compensate ...

2006

Calcium phosphate drug delivery system: influence of local zoledronate release on bone implant osteointegration

Dominique Pioletti, Bastian Peter

Despite total hip replacement (THR) gives generally satisfactory results, the quality of outcome in young patients is markedly decreased compared to the average THR outcome. For this population, pharmacological treatment with bisphosphonate would be benefi ...

2005

Radial elasticity of multiwalled carbon nanotubes

Harald Brune, Stephan Fedrigo, Ismaël Palaci

We report an experimental and a theoretical study of the radial elasticity of multiwalled carbon nanotubes as a function of external radius. We use atomic force microscopy and apply small indentation amplitudes in order to stay in the linear elasticity reg ...

2005

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