Concept

Screw axis

Related publications (39)

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Muscle Moment-Arms: A Key Element in Muscle-Force Estimation

Alexandre Terrier, Alain Farron, Philippe Müllhaupt, Christoph Anselm Engelhardt, David Ingram

A clear and rigorous definition of muscle moment-arms in the context of musculoskeletal systems modelling is presented, using classical mechanics and screw theory. The definition provides an alternative to the tendon excursion method, which can lead to inc ...

Taylor & Francis2015

Variability of the pullout strength of cancellous bone screws with cement augmentation

Dominique Pioletti

Background: orthopaedic surgeons often face clinical situations where improved screw holding power in cancellous bone is needed. Injectable calcium phosphate cements are one option to enhance fixation. Methods: paired screw pullout tests were undertaken in ...

Elsevier2015

The antiferromagnetically ordered state of the monoclinic quasi-one-dimensional S = 1/2 Heisenberg antiferromagnet CuSb2O6 was studied combining torque magnetometry with a phenomenological approach to magnetic anisotropy. This system is known to have a num ...

Amer Physical Soc2015

Learning to integrate contradictory multisensory self-motion cue pairings

Olaf Blanke, Mariia Kaliuzhna, Steven Gale, Sunho Lee

Humans integrate multisensory information to reduce perceptual uncertainty when perceiving the world and self. Integration fails, however, if a common causality is not attributed to the sensory signals, as would occur in conditions of spatiotemporal discre ...

Association for Research in Vision and Ophthalmology2015

Bloch theorem provides a useful tool to analyze wave propagation in periodic systems. It has been widely used in physics to obtain the energy bands of various translationally-periodic cristals and with the advent of nanosciences like nanotubes, it has been ...

Int Center Numerical Methods Engineering2014

Magnetoelectric effect in a hydrogen molecule

Jean-Philippe Ansermet, Sylvain Bréchet, François Reuse, Klaus Maschke

The symmetry breaking due to a magnetic field applied on a hydrogen molecule H2 generates an electric polarization. This magnetoelectric effect occurs for electrons in a triplet state provided the magnetic induction field is not aligned with the symmetry a ...

World Scientific Publishing2014

A Natural Helical Crystal Lattice Model for Carbon Nanotubes

Nicola Marzari

We propose a novel helical crystal lattice model for chiral and achiral carbon nanotubes (CNTs) where the unit cell and the helical crystal vector are defined in a unique and systematic manner for arbitrary CNTs. The small unit cell of this helical crystal ...

Amer Chemical Soc2013

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

Rotational Motion in LiBH4/LiI Solid Solutions

Pascal Martelli

We investigated the localized rotational diffusion of the (BH 4)- anions in LiBH4/LiI solid solutions by means of quasielastic and inelastic neutron scattering. The (BH 4)- motions are thermally activated and characterized by activation energies in the ord ...

2011

Optimal positioning of the stabilizing compression screws in reversed shoulder prostheses

Valérie Hélène Emilie Malfroy Camine

Reversed shoulder prostheses are used for the treatment for glenohumeral arthritis associated to rotator cuff muscle deficiency. The glenoid component is fixed with peripheral screws, which provide the primary stability that is crucial for the long-term os ...

2011