A system, method and/or reamer driver device is provided having a domed external surface and a domed internal surface being concentric to the domed external surface thereby defining a hollow dome or section thereof. At least one cutting tooth is disposed on the hollow dome or section thereof. The cross-sectional thickness T measured substantially perpendicular to the crest of the at least one tooth is greater than the radial distance t between the external and internal domed surfaces. The hollow dome or section thereof is made using an injection molding process or a 3D printing process.

A method of calculating leg length discrepancy of a patient including: receiving patient bone data associated with a lower body of the patient; identifying anatomical landmarks in the patient bone data; orienting a first proximal landmark and a second proximal landmark relative to each other and an origin in a coordinate system; aligning a first axis associated with a first femur and a second axis associated with a second femur with a longitudinal axis extending in a distal-proximal direction, wherein the first and second distal landmarks are adjusted according to the alignment of the first and second axes; calculating a distance between the first and second distal landmarks in the distal-proximal direction along the longitudinal axis; and displaying at least one of the distance or a portion of the patient bone data on a display screen.

A proposed treatment of arthrosis/osteoarthritis in a joint of a mammal or human patient involves deposing a liquid material on at least one damaged surface of the joint. To accomplish this, a reservoir (110) is provided, which holds a volume of a biocompatible material in liquid form outside of a body containing the joint (J) to be treated. A proximal end (P) of a tube-shaped instrument (120) is connected to the reservoir (110), and a distal end (D) of the instrument (120) is inserted into the joint (J). The liquid material is fed through the instrument (120) to the distal end (D) for deposition on the at least one damaged joint surface. The material is configured to assume a solid form under predefined conditions (e.g. when cooling off, or being exposed to a specific type of radiation). When the material has the solid form, it has a resistance to wear adapted to replace a worn out joint surface.

An implantable position detecting system is configured to detect a position of an implantable device with respect to a body structure. The system includes at least one proximity measuring transducer configured to be implanted on the body structure a distance from the implantable device, the at least one proximity measuring transducer being configured to receive energy from an external electromagnetic field generated by an external sensing interface, wherein the at least one proximity sensor is configured to emit an emitted signal responsive to the electromagnetic energy and to receive distance information comprising a sensing signal that is responsive to the distance from the implantable device.

Aspects of the invention relate to systems, devices and methods for performing a surgical step or surgical procedure with visual guidance using an optical head mounted display.

A method to guide in preparation of a bone relies on an instrument having a shaft with a working end and a stop member. The shaft is free to translate along an axis. Surgical planning data is registered to the bone to determine intra-operative coordinates of the desired axis and depth. The instrument holder is positioned by the bone so the stop member contacts the instrument holder to prevent translating beyond the desired depth. Alternatively, an arm is manipulated to align the instrument with the desired axis. The working end rests on the bone to define a linear separation to the desired depth. By proximally translating the instrument holder to contact the stop member and distally translating the instrument holder along the shaft, the stop member physically stops translating beyond the desired depth. A surgical system for performing the methods is provided; a reamer or impactor are also disclosed.

A replaceable battery unit for a surgical power tool and a method of operating a surgical power tool including the replaceable battery unit. The replaceable battery unit includes a housing containing one or more battery cells, a motion sensor unit, and a controller. The controller is operable to determine, from an output of the motion sensor unit, a sudden movement of the replaceable battery unit indicative of a kickback event of the surgical power tool. The controller is also operable, in response to the determination, to disconnect power from the replaceable battery unit to the surgical power tool.

A method includes obtaining a surgical plan comprising a first planned position of an implant and a second planned position of an augment relative to a bone. The augment is planned to provide support between the bone and the implant. The method also includes preparing the bone to receive both the implant in the first planned position and the augment in the second planned position by controlling a robotic device based on the first planned position of the implant and the second planned position of the augment.

An orthopedic milling machine includes an orthopedic guide pin including a bone engaging end and a burr including a hub, the burr being configured for rotation about an axis of the hub, the hub including a bore adapted to receive the orthopedic guide pin, and the burr can be moved laterally toward the guide pin at any location along the length of the guide pin until the guide pin is positioned in the bore.

A system, method and/or reamer driver device provides a driver which has a mean for remotely connect or disconnect (release) the reamer without having to manipulate a release sleeve located close to the surgical tool connector. The surgical reamer driver has a transmission drive train, a housing assembly enclosing the transmission drive train and a locking surgical tool connector. The driver further includes a device for remotely inducing relative movement of the transmission drive assembly with respect to at least a portion of the housing assembly to activate locking and unlocking of the locking surgical tool connector.