Brainlab Ag

Smith + Nephew

Smith & Nephew Orthopaedics Ag

Smith Nephew Asia Pacific Pte. Limited

Lars Dohmen

Mario Schubert

Anna Wiedenmann

Martin Haimerl

Melanie Wegner

Hubert Gotte

Sabine Gneiting

Robert Dick

Thomas Radl

Torsten Hain

Hubert GÖTTE

The present invention relates to a method for registering a first anatomical structure () which is articulately coupled to a second anatomical structure (), the method being constituted to be executed by a computer and comprising the steps of: The present invention further relates to a corresponding computer program and system.

Method for registering articulated anatomical structures

A data processing method performed by a computer for judging implant orientation data representing an orientation of a first implant part relative to a first bone, the first implant part being part of an implant pair which further comprises a second implant part for a second bone, the implant pair being envisaged to be implanted in a patient, comprising the steps of: &#x2014;acquiring the implant orientation data, -acquiring second implant orientation data representing the orientation of the second implant part relative to the second bone, -acquiring implant shape data representing the shapes of the first and second implant parts, &#x2014;acquiring activity data representing at least one desired activity of the patient to be possible after implanting the implant, wherein each desired activity has an associated range of motion between the first bone and the second bone, &#x2014;calculating a range of motion volume, which represents possible orientations between the first bone and the second bone over three rotational axes, from the implant orientation data, the second implant orientation data and the implant shape data, and &#x2014;judging the implant orientation data to be feasible if the ranges of motion of all desired activities lie within the range of motion volume.

Method and apparatus for judging implant orientation data

Tracking marker

Provided is a method for generating pose transformation data between first and second rigidly mounted digital cameras having non-coincident fields of view. The method includes obtaining a first plurality of images of a first calibration object, obtaining a second plurality of images of the first or a second calibration object, generating first and second object point data, generating first and second calibration data of the first and second digital cameras, determining first pose data between a first frame of reference of the first digital camera and the frame of reference of the first calibration object, determining second pose data between the frame of reference of the second digital camera and the frame of reference of the first or second calibration objects, and calculating the pose transformation data between the pose of the first digital camera and the pose of the second digital camera.

Multiple camera calibration

A data processing method performed by a computer for judging implant orientation data representing an orientation of a first implant part relative to a first bone, the first implant part being part of an implant pair which further comprises a second implant part for a second bone, the implant pair being envisaged to be implanted in a patient.

Implant orientation data representing a range of functional orientations of a first implant part relative to a first bone is determined. The first implant part is part of an implant pair to be implanted in an associated patient. The implant pair includes the first implant part and a second implant part. Second implant orientation data representing an orientation of the second implant part relative to a second bone is acquired. Implant shape data representing shapes of the first and the second implant parts is acquired. Activity data representing a desired activity of the associated patient is acquired. The desired activity has an associated original range of motion between the first bone and the second bone. The implant orientation data is determined based on the second implant orientation data, the implant shape data, and the activity data.

Determination of an implant orientation relative to a bone

A data processing method for determining six parameters, corresponding to six degrees of freedom, of a contact position of a joint which connects two bones, comprising the steps of acquiring a 3D model of each bone, acquiring four of the six parameters as a given parameters, selecting initial values for the two remaining parameters and varying the two remaining parameters virtually in order to achieve a virtual relative position between the two 3D models such that they are in contact with each other.

Method for determining contact position parameters of a joint connecting two bones

A data processing method for determining six parameters, corresponding to six degrees of freedom, of a contact position of a joint which connects two bones, comprising the steps of acquiring a 3D model of each bone, acquiring four of the six parameters as given parameters, selecting initial values for the two remaining parameters and varying the two remaining parameters virtually in order to achieve a virtual relative position between the two 3D models such that they are in contact with each other.

The present invention relates to a method for planning the positioning of a ball joint prosthesis, in particular a hip joint prosthesis, wherein the prosthesis includes a stem and a cup and the method comprises the following steps: &#x2014;determining the geometric shape of the joint socket, in particular the acetabulum, and the geometric shape of the cup which is to be placed; &#x2014;defining target areas where the cup has to abut the bony structure of the joint socket, in particular the acetabulum, in order for the cup to be sufficiently fixed; &#x2014;determining actual areas of the cup which will abut the bony structure of the joint socket, in particular the acetabulum, when the cup is placed; &#x2014;defining a requirement for the position and/or orientation of the cup on the basis of the position and/or size of the target areas and/or actual areas. The present invention also relates to a method for optimizing the positioning of a ball joint prosthesis, in particular a hip joint prosthesis, wherein the prosthesis includes a stem and a cup and the method comprises the following steps: &#x2014;defining at least one requirement for the position and/or orientation of the cup; &#x2014;calculating an optimum position and/or orientation of the cup on the basis of all the defined requirements being fulfilled.

Method for planning positioning of a ball joint prosthesis

The present invention relates to a method for planning the positioning of a ball joint prosthesis, in particular a hip joint prosthesis, wherein the prosthesis includes a stem and a cup and the method comprises the following steps: &#x2014;determining the position of at least one point lying on the rim of the joint socket, in particular the position of at least two points lying in an anterior region of the acetabulum; &#x2014;defining a requirement for the position and/or orientation of the cup on the basis of the determined positions of the at least one point. The present invention also relates to a method for optimizing the positioning of a ball joint prosthesis, in particular a hip joint prosthesis, wherein the prosthesis includes a stem and a cup and the method comprises the following steps: &#x2014;defining at least one requirement for the position and/or orientation of the cup; &#x2014;calculating an optimum position and/or orientation of the cup on the basis of all the defined requirements being fulfilled.

A method for determining an orientation of an artificial joint, in particular for planning an implantation of at least one artificial joint in a human or animal body, wherein a first part of the artificial joint and a second part of the artificial joint are designed to be able to form an artificial joint connection with each other, wherein the first part is provided for implantation in a first body structure of the human or animal body, and the second part is provided for implantation in a second body structure of the human or animal body, in order to replace an anatomical joint which connects or connected the first body structure to the second body structure, wherein the method comprises the following steps:

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Munich, Germany

Lars Dohmen