Abstract: Methods and apparatus for performing joint laxity measurement are disclosed. A retractor includes a plurality of spacers, such as plates, that are capable of being moved from a central portion of the retractor by a carriage mechanism. In some cases, the carriage mechanism may press against ramps connected to internal sides of the plates, thereby causing the plates to be displaced outwardly. In other cases, the carriage mechanism may include blades that rotate and press against the internal sides of the plates, thereby causing the plates to be displaced outwardly. The retractor is mounted on a surgical device configured to actuate the carriage mechanism. When the retractor is placed in a joint and the carriage mechanism is actuated, a measurement of the joint laxity may be determined based upon characteristics of the retractor and/or the surgical device.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. For example, a system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system also includes an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.

Abstract: A cutting assembly (200) is configured for use with an electromagnetic tracking system (1). The cutting assembly comprises a bur assembly (10) and a sheath assembly (100). The sheath assembly comprises a sensor (135) configured to measure an electrical field around the cutting assembly, a wire (130) configured to operably connect the sensor and an external computing device (6), and a sensor mount (110) affixed to at least a portion of the sheath assembly, the sensor mount configured to house the sensor and at least a portion of the wire. The sheath assembly is configured to receive at least a portion of the bur assembly such that any impact from magnetic interference caused by, for example, a cutting device (40) within the bur assembly on the sensor is minimized when the cutting device is cutting a patient's bone.

Abstract: Disclosed herein are various systems and methods for an improved minimally invasive surgical tracking system. As disclosed herein, a computer assisted surgical system (CASS) may include an internal tracking device that obtains relative locational data of one or more surgical tools not trackable via a global tracking system. The internal tracking device having an external portion that is trackable global tracking system. Based on the known characteristics and location of the internal tracking device the CASS determines the location of the one or more surgical tools relative to the patient and other objects in the operating room.

Abstract: Systems and methods for generating a surgical plan for altering an abnormal bone using a generic normal bone model are discussed. For example, a system for planning a surgery on an abnormal bone can include a model receiver module configured to receive a generic normal bone model. The generic normal bone model, such as a parametric model derived from statistical shape data, can include a data set representing a normal bone having an anatomical origin comparable to the abnormal bone. An input interface can be configured to receive an abnormal bone representation including a data set representing the abnormal bone. A surgical planning module can include a registration module configured to register the generic normal bone model to the abnormal bone representation by creating a registered generic model. A surgical plan formation module can be configured to identify one or more abnormal regions of the abnormal bone using the registered generic model.

Abstract: A system and method for tracking position and orientation of a surgical tool during a surgical procedure and providing feedback to a user are described. For example the system includes a surgical tool configured to perform at least a portion of the surgical procedure, a tracking system configured to monitor and record position information related to the surgical tool, a processing system, and a display. The processing system can be configured to receive the position information, determine optimal position information for the surgical tool during the surgical procedure, compare the received position information against the optimal position information to determine a conformance level for the user, and generate a user performance record. The display can be configured to receive and display the user performance record.

Abstract: Examples of an orthopedic surgical device for use in operating on a target bone and methods for operating a system for use in orthopedic surgery on a bone are generally described herein. An orthopedic surgical device can include an primary positioning block, and a secondary positioning component removably coupled to the primary positioning block. The secondary positioning component can be configured to: engage a prepared engagement feature machined into the target bone, and guide the primary positioning block to a predetermined position on a target bone. The orthopedic surgical device can include a first cutting block configured to: removably couple to the primary positioning block, and guide a cutting tool to cut the target bone.

Abstract: A system for tracking resection planes during a surgical procedure includes a cutting block and a position tracker. The cutting block is configured to be mounted on an anterior surface of a bone during the surgical procedure. The cutting block comprises at least one slot configured to position a resection tool during the surgical procedure. The position tracker is configured to be directly attached to the cutting block after the cutting block is mounted on the anterior surface to allow positional tracking of the cutting block by a tracking device during the surgical procedure.

Abstract: A system, method, and device for drilling holes (420, 422) in a target bone (414) are described. For example, the system includes a cutting tool (330), a navigation system (310) configured to track a position of the cutting tool, and a computer-assisted surgical (CAS) system (340) operably connected to the cutting tool and the navigation system. The CAS system can be configured to determine an implant component (100) to be implanted on the target bone (414), determine a cutting block position for preparing the target bone to receive the implant component, determine a plurality of pin locations (420, 422) for securing the cutting block (416) based upon the determined cutting block position, and selectively provide instructions to the cutting tool to cut a hole when the cutting tool is in a position adjacent to at least one of the determined plurality of pin locations.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. For example, a system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system also includes an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.

Abstract: Examples of an orthopedic surgical device for use in operating on a target bone and methods for operating a system for use in orthopedic surgery on a bone are generally described herein. An orthopedic surgical device can include an primary positioning block, and a secondary positioning component removably coupled to the primary positioning block. The secondary positioning component can be configured to: engage a prepared engagement feature machined into the target bone, and guide the primary positioning block to a predetermined position on a target bone. The orthopedic surgical device can include a first cutting block configured to: removably couple to the primary positioning block, and guide a cutting tool to cut the target bone.

Abstract: Methods and apparatus for performing joint laxity measurement are disclosed. A retractor includes a plurality of spacers, such as plates, that are capable of being moved from a central portion of the retractor by a carriage mechanism. In some cases, the carriage mechanism may press against ramps connected to internal sides of the plates, thereby causing the plates to be displaced outwardly. In other cases, the carriage mechanism may include blades that rotate and press against the internal sides of the plates, thereby causing the plates to be displaced outwardly. The retractor is mounted on a surgical device configured to actuate the carriage mechanism. When the retractor is placed in a joint and the carriage mechanism is actuated, a measurement of the joint laxity may be determined based upon characteristics of the retractor and/or the surgical device.

Abstract: A computer-controlled remote power module is disclosed. The remote power module may include an enclosure containing a power converter, a voltage controller, an antenna and a microprocessor. The voltage controller may be in electrical communication with the power converter. The microprocessor may be in electrical communication with the power converter, the voltage controller, and the antenna. The antenna may be configured to receive wireless transmissions from a remote computer control system, and provide a signal to the microprocessor based on the received transmissions. The microprocessor may receive the signal, and, based on the signal, selectively cause the voltage controller to provide power. The remote power module may be configured to selectively provide power from a battery to a tool, such as a surgical tool.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. For example, a system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system also includes an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.

Abstract: A system and device (110) for determining bone laxity. For example, the system includes a tracked probe (300) comprising at least one probe marker (310) and a computer assisted surgical (CAS) system (100). The CAS system includes a navigation system (130) and a processing device (110) operably connected to the navigation system and a computer readable medium configured to store one or more instructions that, when executed, cause the processing device to receive location information from the navigation system, generate (820) a surgical plan comprising a post-operative laxity assumption (720), collect (850) first motion information related to movement of the joint through a first range of motion, collect (860) second motion information related to movement of the joint through a second range of motion, determine (870) a post-operative laxity (710), and compare the post-operative laxity and the post-operative laxity assumption to determine laxity results.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. For example, a system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system also includes an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. For example, a system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system also includes an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.

Abstract: Examples of an orthopedic surgical device for use in operating on a target bone and methods for operating a system for use in orthopedic surgery on a bone are generally described herein. An orthopedic surgical device can include an primary positioning block, and a secondary positioning component removably coupled to the primary positioning block. The secondary positioning component can be configured to: engage a prepared engagement feature machined into the target bone, and guide the primary positioning block to a predetermined position on a target bone. The orthopedic surgical device can include a first cutting block configured to: removably couple to the primary positioning block, and guide a cutting tool to cut the target bone.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. For example, a system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system also includes an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. For example, a system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system also includes an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.