Systems, methods and a sensor alignment mechanism are disclosed for medical navigational guidance systems. In one example, a system to make sterile a non-sterile optical sensor for use in navigational guidance during surgery includes a sterile drape having an optically transparent window to drape the optical sensor in a sterile barrier and a sensor alignment mechanism. The alignment mechanism secures the sensor through the drape in alignment with the window without breaching the sterile barrier and facilitates adjustment of the orientation of the optical sensor. The optical sensor may be aligned to view a surgical site when the alignment mechanism, assembled with the sterile drape and optical sensor, is attached to a bone. The alignment mechanism may be a lockable ball joint and facilitate orientation of the sensor in at least two degrees of freedom. A quick connect mechanism may couple the alignment mechanism to the bone.

Disclosed herein is a joint replacement system and a method of performing surgery. The joint replacement system may include a first implant having a marker, a second implant having a reader to detect the marker, and a processor in communication with the second implant. The processor may include different algorithms based on the first and second implants. The method may comprise the steps of receiving first information related to a first implant, receiving second information related to a second implant, selecting an algorithm based on the first and second information; and receiving data from the first and second implants utilizing the algorithm.

Disclosed herein are joint implants with sensors and methods for manufacturing joint implants with sensors. A knee joint implant according to the present disclosure may include a femoral implant, a tibial implant and a tibial insert disposed therebetween. The tibial implant may include a medial side with a medial central region defined around a medial center, a lateral side with a lateral central region defined around a lateral center and a central region disposed between the medial central region and the lateral central region. At least one sensor and a battery may be disposed within the tibial insert. The medial central region and the lateral central region may be defined by solid volumes extending from a proximal surface to a distal surface of the tibial insert.

Disclosed herein are implants with sensors and methods for powering implants with sensors. A joint implant according to the present disclosure can include a first implant and a second implant in contact with the first implant. The first implant can be coupled to a first bone of a joint. The first implant can include an energy generator coupled to a transducer. The second implant can include at least one sensor, a battery coupled to the at least one sensor, and a receiver coupled to the battery. The receiver can be disposed within the second implant adjacent the transducer. Energy from the energy generator can be transmitted from the transducer of the first implant to the receiver of the second implant.

Disclosed herein are joint implants and methods for intra-operatively detecting joint implant gap. A method for detecting a joint implant gap may include coupling a first implant to a first bone of a joint, coupling a second implant to a second bone of the joint, measuring an amplitude of a magnetic flux density using a magnetic sensor to determine a gap between the first and second implants. The first implant may include at least one magnetic marker. The second implant may be configured to contact the first implant. The second implant may include at least one magnetic sensor to detect the magnetic flux density of the magnetic marker. The gap between the first and second implant may be intra-operatively determined using the measured amplitude of the magnetic flux density.

Disclosed herein are joint implants and methods for tracking joint implant performance. A joint implant according to the present disclosure can include a first implant on a first bone and a second implant on a second bone of a joint. The first implant can include medial and lateral markers. The second implant can include a medial marker reader to identify the medial markers and a lateral marker reader to identify the lateral markers to provide positional data of the first implant with respect to the second implant. The second implant can include a medial load sensor to measure medial load data and a lateral load sensor to measure lateral load data. A processor coupled to the medial marker reader, the lateral marker reader, the medial load sensor, and the lateral load sensor can transmit the positional data, the medial and lateral load data to an external source.

Disclosed is a wearable physical therapy data collection system. The system includes a wearable support having a waistband and at least one motion detector assembly. The motion detector assembly includes a femoral strut extending between a superior end and an inferior end; a polyaxial connection between the superior end and the waistband; and hip sensors in motion sensing communication with the polyaxial connection, configured to capture data reflecting movement of the femur with respect to the hip in the medial—lateral direction, anterior—posterior direction and rotation of the femur. A tibial strut may extend between the inferior end and a polyaxial connection to a foot attachment. Sensors may be provided to capture data reflecting tibial rotation, and flexion, extension, rotation and pronation of the foot. Separate left and right motion detectors enable collection of bilateral data, to identify bilateral imbalances and monitor rehabilitation progress.

A measuring adapter for a measuring instrument for use in connection with hip prosthesis surgery comprises a measuring head and a connector. The measuring head comprises a front end, a rear end and convex upper surface and is divided into at least two separate sections. The measuring head comprises an axially extending central through-going bore adapted to receive an actuating rod . The measuring head is expandable from a relaxed state to an expanded state by axially displacing the actuating rod in the central through-going bore. The connector is hollow and divided at one end in axial direction of the measuring head into a number of legs corresponding to the number of separate sections of the measuring head; each leg being connected to one of the sections of the measuring head. At least a part of the upper surface of the measuring head is adapted, when in the expanded state, to adopt the shape of a spherical cap or a convex shape comprising at least a spherical segment.

A musculoskeletal stabilization system adapted to stabilize spine and SI joint structures. The musculoskeletal stabilization system includes a spine structure stabilization sub-system and a pelvic structure stabilization sub-system. The pelvic structure stabilization sub-system comprising two multi-function prostheses that are adapted to be delivered to and inserted into SI joints of a subject via a posterior trajectory. The multi-function joint prostheses are further adapted to stabilize respective SI joints and cooperate with the spine stabilization sub-system to also stabilize the subject's spine jointly.

A measuring adapter (1) for a measuring instrument for use in connection with hip prosthesis surgery is provided. The measuring adapter (1) comprises a measuring head (2) and a connector (3); the measuring head (2) comprises a front end (2a), a rear end (2b) and an upper surface (4a). The upper surface (4a) is convex. The measuring head (2), along an axial direction of the measuring adapter (1), further comprises a central through-going bore (5) adapted to receive an actuating rod (8). The measuring head (2) is adapted to expand from a relaxed state to an expanded state when the actuating rod (8) is axially displaced in the central through-going bore (5); and the measuring head (2) is divided into at least two separate sections (6). The connector (3) is hollow and slotted at one end in axial direction of the measuring head (2) into a number of legs (7), the number of legs (7) corresponding to the number of the at least two separate sections (6) of the measuring head (2). The legs (7) of the connector (3) are each connected to one of the at least two separate sections (6) of the measuring head (2) on the rear end (2b) of the measuring head (2). A securing arrangement (18) is provided at the opposite end of the connector (3) relative to the connection to the measuring head (2), and at least a part of the upper surface (4a) of the measuring head (2) is adapted to, in one expanded state, adopt the shape of a spherical cap or a convex shape comprising at least a spherical segment. A measuring adapter (1) is also provided that comprises windows or through-going holes (10) or windows.