A tendon stretching mechanism which engages the torn tendon using sutures. A second end of the sutures is exposed through the skin. Using a tensioning mechanism, a selectively pull is applied to the second end of the sutures to gradually stretch the tendon. This stretching of the tendon may take a week or more or until the tendon has been sufficiently elongated for reattachment to the bone. The tensioning mechanism is either manually operated or is automatic.

A spinal implant which is configured to be deployed between adjacent vertebral bodies. The implant has at least one fixation element with a retracted configuration to facilitate deployment of the implant and an extended configuration so as to engage a surface of an adjacent vertebral body and secure the implant between two vertebral bodies. Preferably, the implant is expandable and has a minimal dimension in its unexpanded state that is smaller than the dimensions of the neuroforamen through which it must pass to be deployed within the intervertebral space. Once within the space between vertebral bodies, the implant can be expanded so as to engage the endplates of the adjacent vertebrae to effectively distract the anterior disc space, stabilize the motion segments and eliminate pathologic spine motion. Angular deformities can be corrected, and natural curvatures restored and maintained.

A system and method for improving installation of a prosthesis, particularly an acetabular cup. The system and method may include implementation of a constant velocity relative motion between a prosthesis and an installation site. For example, an installation system may be fixed relative to the installation site, with the prosthesis fixed into an initial position. The prosthesis is moved at constant speed (i.e., with minimal if any acceleration or applied impulses) relative to the installation site. That is, one or both of the prosthesis or the installation site may be in motion. Resistive forces to installation of a prosthesis may thus be reduced by maintaining the prosthesis constantly in motion relative to the installation site. Securing a processing/implanting tool directly to the installation site may offer advantages.

A device including a first plate configured to interface with a first bone structure of a joint; a second plate configured to interface with a second bone structure of the joint opposite the first bone structure; and at least one mechanical actuation mechanism disposed between the first plate and the second plate and configured to apply a distraction force along an axis between the first plate and the second plate so as to urge the first plate and the second plate away from one another, wherein the device is configured so as to have a range of motion ranging from a minimum distance between the first plate and the second plate to a maximum distance between the first plate and the second plate, and wherein the mechanical actuation mechanism is configured such that the distraction force is substantially constant distraction force across the range of motion.

An orthopaedic surgical system includes a sensor module for determining the joint force of a patient's knee joint and an adaptor for coupling various tibial trialing components to the sensor module. The sensor module includes a tibial paddle to which the adaptor is configured to couple. The adaptor and tibial paddle include structures that control the orientation at which the adaptor is attachable to the tibial paddle. Some tibial trialing components may be positioned over the adaptor in a mobile orientation that facilities rotation of the tibial trialing component relative to the tibial paddle or a fixed orientation that restricts the rotation of the tibial trialing component.

A joint balancing insert with sensors and an actuated mechanism is disclosed. The joint balancing insert is used to balance a joint during arthroplasty surgery, as the sensors provide force, position and angular data relating to the movement of the joint, while the actuated mechanism allows for highly accurate and dynamic adjustments of the joint based on the data from the sensors. Various configurations of actuated mechanisms and sensors may be implemented in the insert to provide for manual or real time control of the insert, and customized interfaces are provided for visualized feedback of adjustments. Sensor data may also be collected and compared with expected or preferred data sets to provide adjustment recommendations and achieve better outcomes based on historical data.

Provided is a spacer device for assisting a surgeon during knee surgery on a patient, the spacer device having a housing, a support portion and an electronic force sensor. The housing includes a lateral member having an outer surface and an inner surface and a pair of side members that comprise respective, internal, opposed side walls. The support portion includes a first end portion disposed between the side walls of the housing and including a first pair of lateral projections and a second end portion. The support portion is further adapted for axial slidable movement relative to the housing so as to define a first space and a second space between a first pair of lateral projections and respective side members for receiving one or more spacer elements therein. A surgical system including the spacer device as well as methods of using same are also provided.

A device including a first plate configured to interface with a first bone structure of a joint; a second plate configured to interface with a second bone structure of the joint opposite the first bone structure; and at least one mechanical actuation mechanism disposed between the first plate and the second plate and configured to apply a distraction force along an axis between the first plate and the second plate so as to urge the first plate and the second plate away from one another, wherein the device is configured so as to have a range of motion ranging from a minimum distance between the first plate and the second plate to a maximum distance between the first plate and the second plate, and wherein the mechanical actuation mechanism is configured such that the distraction force is substantially constant distraction force across the range of motion.

Devices, systems and methods are provided for facilitating knee balancing during a knee replacement surgery. A system can include a force sensor, a main body, a moveable sensor platform, and an adjustment mechanism. The force sensor can sense one or more forces applied within a knee joint, including forces applied on a medial side and a lateral side. The movable sensor platform can be coupled between the force sensor and the main body. The adjustment mechanism can adjust the moveable sensor platform, relative to the main body, thereby adjusting a collective height of the system. A method can include inserting portions of a knee balancing system into a gap formed between a cut distal end of a femur and a cut proximal end of a tibia, adjusting an adjustable mechanism of the system to increase or decrease a collective system height, and sensing and displaying the medial and lateral forces.

The disclosure relates to devices and methods for implantation of an orthopedic device between skeletal segments using limited surgical dissection. The implanted devices are used to adjust and maintain the spatial relationship(s) of adjacent bones. Depending on the implant design, the motion between the skeletal segments may be increased, limited, modified, or completely immobilized.