The present invention provides, in certain embodiments, a device for determining the tibial mechanical axis and the femoral mechanical axis. The present invention also provides a surgical orientation device, a reference device, and/or a module configured to track the mechanical axes during movement to facilitate limb alignment. The present invention further provides the surgical orientation device, the reference device, and/or the module configured to determine a gap measurement.

A surgical navigation system for providing computer-aided surgery. The surgical navigation system includes a handheld surgical tool with computer-aided navigation, a graphical user interface module, and optionally an imaging device. The handheld surgical tool includes a handle that may comprise at least one sensor for detecting orientation of the. A computing device and at least one display device are associated with the handheld surgical tool and configured to display a target trajectory of the handheld surgical tool for the surgical procedure.

Certain embodiments described herein relate to systems and methods for determining implant configuration or design of implants by taking into account soft tissues and utilizing patient-specific simulations of activities of daily living.

A data processing method, performed by a computer, for determining implant positions of two implant components relative to two bones, wherein each of the implant components is to be attached to one of the bones such that the implant components form a joint between the bones, and wherein an implant position is a relative position between the implant component and the corresponding bone, said method comprising the steps of: a) acquiring a set of target poses, wherein a target pose represents a relative position to be achieved between the two bones; b) calculating a set of virtual poses for a pair of virtual test implant positions, wherein the set of virtual poses comprises one virtual pose for each of the target poses and wherein a virtual pose represents a relative position between the two bones if the virtual test implant positions were applied as the implant positions; c) calculating a pose deviation value for each of the target poses, wherein a pose deviation value represents the difference between a target pose and the corresponding virtual pose; d) calculating an overall pose deviation value from all the individual pose deviation values; e) repeating steps b) to d) for different pairs of virtual test implant positions until the overall pose deviation value fulfils a minimisation criterion; and f) using the pair of virtual test implant positions for which the minimisation criterion is fulfilled as the implant positions.

The subject matter includes systems, methods, and prosthetic devices for joint reconstruction surgery. A computer-assisted intraoperating planning method can include accessing a first medical image providing a first view of a joint within a surgical site as well as receiving selection of a first component of a modular prosthetic device implanted in the first bone of the joint. The method continues by displaying a graphical representation of the first component of the modular prosthetic device overlaid on the first medical image, and updating a graphical representation of the first component based on receiving positioning inputs representative of an implant location of the first component relative to landmarks on the first bone visible within the first medical image. The method concludes by presenting a selection interface enabling visualization of additional components of the modular prosthetic device virtually connected to the first component and overlaid on the first medical image.

This disclosure relates to planning systems, methods and instrumentation. The planning systems, methods and instrumentation disclosed herein may be utilized for planning orthopaedic procedures to restore functionality to a joint, may include determining an amount of bone loss along or otherwise adjacent to an articular surface of a bone. Instrumentation may be formed based on one or more dimensions associated with the bone loss. The articular surface may be repaired, which may include utilizing the instrumentation and planning systems to position and secure a bone graft along a position of the bone associated with the bone loss.

Systems and methods for ascertaining a position of an orthopedic element in space comprising: capturing a first and second images of an orthopedic element in different reference frames using a radiographic imaging technique, detecting spatial data defining anatomical landmarks on or in the orthopedic element using a deep learning network, applying a mask to the orthopedic element defined by an anatomical landmark, projecting the spatial data from the first image and the second image to define volume data, applying the deep learning network to the volume data to generate a reconstructed three-dimensional model of the orthopedic element; and mapping the three-dimensional model of the orthopedic element to the spatial data to determine the position of the three-dimensional model of the orthopedic element in three-dimensional space.

A method of evaluating soft tissue of a human joint which includes two or more bones and ligaments, wherein the ligaments are under anatomical tension to connect the bones together, creating a load-bearing articulating joint, the method includes: inserting into the joint a tensioner-balancer that includes a means of controlling a distraction force; providing an electronic receiving device; moving the joint through at least a portion of its range of motion; while moving the joint, controlling the distraction force, and collecting displacement and distraction load data of the bones; processing the collected data to produce a digital geometric model of the joint, wherein the model includes: ligament displacement data along a range of flexion angles and ligament load data along a range of flexion angles; and storing the digital geometric model for further use.

A method and apparatus for planning an orthopedic procedure is disclosed. The method comprises retrieving medical imaging data, identifying a plurality of landmarks including at least a first landmark at a portion of the first bone and at least a second landmark at a portion of the second bone comprised in the medical imaging data. The portion of the first bone and the portion of the second bone may be segmented such that the portion of the first bone is moveable relative the portion of the second bone. At least one of a first implant component and a second implant component can be selected from among a plurality of implant components in a database based on information obtained from the first landmark and the second landmark The first implant component and/or the second implant component can be fitted in a space at least partially defined by the first landmark and the second landmark

The invention relates to a surgical system for cutting an anatomical structure (F, T) of a patient according to at least one target plane defined in a coordinate system of the anatomical structure, comprising: i) a robotic device (100) comprising: —a cutting tool, —an actuation unit (4) comprising from three to five motorized degrees of freedom, said actuation unit comprising at least one portion having a parallel architecture comprising a base (40) and a platform (41) selectively orientable relative to the base (40) according to at least two of said motorized degrees of freedom, —a planar mechanism (24) connecting a terminal part of the actuation unit (4) to the cutting tool (2), ii) a passive articulated lockable holding arm (51) supporting the actuation unit, iii) a tracking unit (200) configured to determine in real time the pose of the cutting plane with respect to the coordinate system of the anatomical structure, iv) a control unit (300) configured to determine the pose of the cutting plane with respect to the target plane, to detect whether the cutting plane can be aligned with one target plane without changing the pose of the actuation unit, the control unit being further configured to, if the cutting plane cannot be aligned with the target plane, compute indication to a user to reposition the actuation unit with respect to the anatomical structure and, if the cutting plane can be aligned with the target plane, control the actuation unit (4) so as to bring the cutting plane into alignment with the target plane, v) a user interface coupled to the control unit, configured to indicate directions to a user to position the actuation unit with respect to the anatomical structure according to a pose allowing aligning the cutting plane with the target plane.