Abstract: A system and method is provided for estimating orientation and position of surgical instrumentation or tools relative to a patient's bone structure. The system and/or method may include registering an axis and/or plane associated with a patient's bone. The system and/or method may further include receiving, from magnetic and orientation sensors, information indicative of orientation and position of the surgical instrument or tool relative to the registered axis and/or plane.

Abstract: A rotary exercise system in one embodiment includes a chassis configured for mounting to stationary support members, a rotational support shaft rotatably coupled to chassis, and handle bar assembly coupled to the support shaft and manually rotatable therewith by a user. A variable resistance mechanism applies a user-adjustable rotational resistance force on the support shaft, which changes the force required to be applied by the user to rotate the handle bar assembly during an exercise routine. In some embodiments, the resistance mechanism may be a frictional resistance mechanism, such as a drum or disc brake assembly. A user-operated control actuator allows the user to readily change resistance settings to increase or decrease the rotational resistance imparted to the support shaft by the resistance mechanism. In some implementations, the chassis may be detachably mounted on vertical supports of a power rack and adjustable in height for performing different exercise routines.

Abstract: A knee balancing system for measuring performance parameters associated with an orthopedic articular joint comprises a force sensing module and one or more inertial measurement units. The force sensing module comprises a housing that includes an articular surface having a medial portion and a lateral portion, each of which is substantially mechanically isolated from the other. The force sensing module also includes first and second sets of sensors disposed within the housing. The first set of sensors is mechanically coupled to the medial portion of the articular surface and configured to detect information indicative of a first force incident upon the medial portion of the articular surface. The second set of sensors is mechanically coupled to the lateral portion of the articular surface and configured to detect information indicative of a second force incident upon a lateral portion of the articular surface.

Abstract: A joint monitoring system for measuring performance parameters associated with an orthopedic articular joint comprises a force sensing module and an inertial measurement units. The sensing module comprises a housing that engages with the joint articular surface having a medial portion and a lateral portion. The sensing module also includes a first and second set of sensors disposed within the housing. The first set of sensors are mechanically coupled to the medial portion of the particular surface and configured to detect information of a force incident upon the medial portion of the articular surface. The second set of sensors are mechanically coupled to the lateral portion of the articular surface and configured to detect information a force incident upon a lateral portion of the articular surface. The inertial measurement unit is configured to detect an orientation of at least one of a first and second bone of a knee joint.

Abstract: A knee balancing system for measuring performance parameters associated with an orthopedic articular joint comprises a force sensing module and one or more inertial measurement units. The force sensing module comprises a housing that includes an articular surface having a medial portion and a lateral portion, each of which is substantially mechanically isolated from the other. The force sensing module also includes first and second sets of sensors disposed within the housing. The first set of sensors is mechanically coupled to the medial portion of the articular surface and configured to detect information indicative of a first force incident upon the medial portion of the articular surface. The second set of sensors is mechanically coupled to the lateral portion of the articular surface and configured to detect information indicative of a second force incident upon a lateral portion of the articular surface.

Abstract: A force sensing module for measuring performance parameters associated with an orthopedic articular joint is disclosed. The force sensing module includes a housing having a substantially concave articular surface and an implant surface, the substantially concave articular surface and the implant surface defining a compartment therebetween. The force sensing module also includes a first set of sensors disposed within the compartment, which are mechanically coupled between the substantially concave articular surface and the implant surface. The first set of sensors is configured to detect information indicative of a first portion of a force present at a first area of the substantially concave articular surface. The force sensing module also includes a second set of sensors disposed within the compartment, which are mechanically coupled between the substantially concave articular surface and the implant surface.

Abstract: A force sensing module for measuring performance parameters associated with an orthopedic articular joint is disclosed. The force sensing module includes a housing having a substantially concave articular surface and an implant surface, the substantially concave articular surface and the implant surface defining a compartment therebetween. The force sensing module also includes a first set of sensors disposed within the compartment, which are mechanically coupled between the substantially concave articular surface and the implant surface. The first set of sensors is configured to detect information indicative of a first portion of a force present at a first area of the substantially concave articular surface. The force sensing module also includes a second set of sensors disposed within the compartment, which are mechanically coupled between the substantially concave articular surface and the implant surface.

Abstract: A knee balancing system for measuring performance parameters associated with an orthopedic articular joint comprises a force sensing module and one or more inertial measurement units. The force sensing module comprises a housing that includes an articular surface having a medial portion and a lateral portion, each of which is substantially mechanically isolated from the other. The force sensing module also includes first and second sets of sensors disposed within the housing. The first set of sensors is mechanically coupled to the medial portion of the articular surface and configured to detect information indicative of a first force incident upon the medial portion of the articular surface. The second set of sensors is mechanically coupled to the lateral portion of the articular surface and configured to detect information indicative of a second force incident upon a lateral portion of the articular surface.

Abstract: A force sensing module for measuring performance parameters associated with an orthopedic articular joint is disclosed. The force sensing module includes a housing having a substantially concave articular surface and an implant surface, the substantially concave articular surface and the implant surface defining a compartment therebetween. The force sensing module also includes a first set of sensors disposed within the compartment, which are mechanically coupled between the substantially concave articular surface and the implant surface. The first set of sensors is configured to detect information indicative of a first portion of a force present at a first area of the substantially concave articular surface. The force sensing module also includes a second set of sensors disposed within the compartment, which are mechanically coupled between the substantially concave articular surface and the implant surface.

Abstract: A knee balancing system for measuring performance parameters associated with an orthopedic articular joint comprises a force sensing module and one or more inertial measurement units. The force sensing module comprises a housing that includes an articular surface having a medial portion and a lateral portion, each of which is substantially mechanically isolated from the other. The force sensing module also includes first and second sets of sensors disposed within the housing. The first set of sensors is mechanically coupled to the medial portion of the articular surface and configured to detect information indicative of a first force incident upon the medial portion of the articular surface. The second set of sensors is mechanically coupled to the lateral portion of the articular surface and configured to detect information indicative of a second force incident upon a lateral portion of the articular surface.

Abstract: A nonpenetrated barrier system includes: one or more elements and a component having properties configured to reliably respond to impetus downhole of the one or more elements of the barrier system in a way that is measurable uphole of the one or more of the one or more elements of the barrier system. The system further includes one or more sensors positioned in operable communication with the component uphole of the one or more elements.

Abstract: A knee balancing system for measuring performance parameters associated with an orthopedic articular joint comprises a force sensing module and one or more inertial measurement units. The force sensing module comprises a housing that includes an articular surface having a medial portion and a lateral portion, each of which is substantially mechanically isolated from the other. The force sensing module also includes first and second sets of sensors disposed within the housing. The first set of sensors is mechanically coupled to the medial portion of the articular surface and configured to detect information indicative of a first force incident upon the medial portion of the articular surface. The second set of sensors is mechanically coupled to the lateral portion of the articular surface and configured to detect information indicative of a second force incident upon a lateral portion of the articular surface.

Abstract: A force sensing module for measuring performance parameters associated with an orthopedic articular joint is disclosed. The force sensing module includes a housing having a substantially concave articular surface and an implant surface, the substantially concave articular surface and the implant surface defining a compartment therebetween. The force sensing module also includes a first set of sensors disposed within the compartment, which are mechanically coupled between the substantially concave articular surface and the implant surface. The first set of sensors is configured to detect information indicative of a first portion of a force present at a first area of the substantially concave articular surface. The force sensing module also includes a second set of sensors disposed within the compartment, which are mechanically coupled between the substantially concave articular surface and the implant surface.

Abstract: A method and system of enabling communication between peers in a peer-to-peer (P2P) network in the presence of network address translators (NAT). The method includes: assigning a unique peer identifier to each one of the plurality of peers in the P2P network; establishing an overlay topology connecting each peer to a subset of the plurality of peers in a structured connection pattern based on the unique peer identifier of each peer, each one of the plurality of peers having more connections to close peers and fewer connections to distant peers; and routing messages between peers through the established overlay topology.

Abstract: A method for more effectively distributing the I/O workload in a data replication system is disclosed herein. In selected embodiments, such a method may include generating an I/O request and identifying a storage resource group associated with the I/O request. In the event the I/O request is associated with a first storage resource group, the I/O request may be directed to a first storage device and a copy of the I/O request may be mirrored from the first storage device to a second storage device. Alternatively, in the event the I/O request is associated with a second storage resource group, the I/O request may be directed to a second storage device and a copy of the I/O request may be mirrored from the second storage device to the first storage device.

Abstract: A method for managing extents in a data storage system includes monitoring usage statistics for an extent residing on one or more powered-up storage devices. In the event the extent has not been accessed for specified period of time (as determined from the usage statistics), the method automatically compresses the extent and migrates the extent to an intermediate repository. Once the amount of data in the intermediate repository reaches a specified level, the method migrates the extent from the intermediate repository to one or more normally powered-down storage devices. If I/O is received for the extent while it resides in the normally powered-down storage devices or the intermediate repository, the method automatically migrates the extent from the normally powered-down storage devices or the intermediate repository to the normally powered-up storage devices. A corresponding apparatus and computer program product are also disclosed.

Abstract: A method for more effectively distributing the I/O workload in a data replication system is disclosed herein. In selected embodiments, such a method may include generating an I/O request and identifying a storage resource group associated with the I/O request. In the event the I/O request is associated with a first storage resource group, the I/O request may be directed to a first storage device and a copy of the I/O request may be mirrored from the first storage device to a second storage device. Alternatively, in the event the I/O request is associated with a second storage resource group, the I/O request may be directed to a second storage device and a copy of the I/O request may be mirrored from the second storage device to the first storage device.

Abstract: A method is disclosed for reliably updating a data group in a read-before-write data replication environment. The method reliably updates the data group by receiving an updated data group sent from a first storage medium to a second storage medium, comparing the updated data group with a previous data group previously existing on the second storage medium and writing the updated data group to the second storage medium. The read-before-write and differencing method disclosed maintain reliability by storing multiple copies of changes made to the second storage medium during and after the write process.

Abstract: A method for managing extents in a data storage system includes monitoring usage statistics for an extent residing on one or more powered-up storage devices. In the event the extent has not been accessed for specified period of time (as determined from the usage statistics), the method automatically compresses the extent and migrates the extent to an intermediate repository. Once the amount of data in the intermediate repository reaches a specified level, the method migrates the extent from the intermediate repository to one or more normally powered-down storage devices. If I/O is received for the extent while it resides in the normally powered-down storage devices or the intermediate repository, the method automatically migrates the extent from the normally powered-down storage devices or the intermediate repository to the normally powered-up storage devices. A corresponding apparatus and computer program product are also disclosed.

Abstract: A method for more effectively distributing the I/O workload in a data replication system is disclosed herein. In selected embodiments, such a method may include generating an I/O request and identifying a storage resource group associated with the I/O request. In the event the I/O request is associated with a first storage resource group, the I/O request may be directed to a first storage device and a copy of the I/O request may be mirrored from the first storage device to a second storage device. Alternatively, in the event the I/O request is associated with a second storage resource group, the I/O request may be directed to a second storage device and a copy of the I/O request may be mirrored from the second storage device to the first storage device. A corresponding system, apparatus, and computer program product are also disclosed and claimed herein.