Omnilife Science, Inc.

Perception Raisonnement Action En Medecine

A2 Surgical

Depuy Ireland Unlimited Co.

A² Surgical

Jonathan Schers

Stephane Lavallee

Christopher Plaskos

Stéphane Lavallee

Daniel Girardeau-Montaut

Jocelyne Troccaz

Laurence Chabanas

Matthieu Nesme

A computerized bone motion tracking system according to one exemplary embodiment is configured to: provide a non-invasive means for accurate measurement and tracking of the motion of a bone using a volumetric ultrasound transducer and a three dimensional position measurement system; provide relative measurements of one bone relative to another bone of a joint; decompose relative joint motion into specific components; and measure joint instability and range of motion.

Ultrasonic bone motion tracking system

The invention relates to an automated method for precise determination of the head center and radius and the neck axis of an articulated bone from acquired 3D medical image of an articulation, comprising the following steps: i) determining, from a 3D image of the bone, an approximate sphere (SFO) of the head of the bone that substantially fits the spherical portion of the head of the bone; ii) constructing from the 3D image and the approximate sphere (SFO), a 3D surface model (S) of the bone; iii) determining, from the 3D surface model (S) and from the approximate sphere (SFO), an approximate neck axis (AXO) of the neck of the bone; iv) determining, from the 3D surface model (S) and the approximate sphere (SFO), a precise sphere (SF); v) determining, from the 3D surface model (S), the precise sphere (SF) and the approximate neck axis (AXO), a precise neck axis (AX).

Method and system of automatic determination of geometric elements from a 3D medical image of a bone

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Grenoble, France

Jonathan Schers