Abstract: A surgical instrument for making femoral resections for seating a femoral implant on a distal femur, the instrument configured for orientation relative to an intramedullary rod. The instrument includes a medial distal cut guide having a cut guide portion, the cut guide portion having a cut slot therein for use in resecting a medial distal condyle of the femur. A medial distal cut paddle supports the medial distal cut guide. The medial distal cut paddle is configured to mount on the intramedullary rod to orient the medial distal cut slot substantially along an anterior-medial slope of the medial distal condyle when the medial distal cut paddle is mounted on the intramedullary rod to thereby define an anterior-medial approach for making a medial distal resection of the medial distal condyle.

Abstract: A surgical instrument for making femoral resections for seating a femoral implant on a distal femur, the instrument configured for orientation relative to an intramedullary rod. The instrument includes a medial distal cut guide having a cut guide portion, the cut guide portion having a cut slot therein for use in resecting a medial distal condyle of the femur. A medial distal cut paddle supports the medial distal cut guide. The medial distal cut paddle is configured to mount on the intramedullary rod to orient the medial distal cut slot substantially along an anterior-medial slope of the medial distal condyle when the medial distal cut paddle is mounted on the intramedullary rod to thereby define an anterior-medial approach for making a medial distal resection of the medial distal condyle.

Abstract: A surgical instrument for making femoral resections for seating a femoral implant on a distal femur, the instrument configured for orientation relative to an intramedullary rod. The instrument includes a medial distal cut guide having a cut guide portion, the cut guide portion having a cut slot therein for use in resecting a medial distal condyle of the femur. A medial distal cut paddle supports the medial distal cut guide. The medial distal cut paddle is configured to mount on the intramedullary rod to orient the medial distal cut slot substantially along an anterior-medial slope of the medial distal condyle when the medial distal cut paddle is mounted on the intramedullary rod to thereby define an anterior-medial approach for making a medial distal resection of the medial distal condyle.

Abstract: A patellar clamp and associated system and method for using the clamp are provided. A patellar clamp includes a pair of handles movably coupled together, a patella support portion connected to the pair of handles and configured to engage a first side of a patella, and a reamer guide configured to engage a second side of the patella. The patella support portion and the reamer guide each include a first pair of flanges configured to engage a first and second tendon associated with the patella. The reamer guide is configured to allow reaming and resurfacing the entire desired posterior articular surface of the patella in a single operation without readjusting the position of the reamer guide.

Abstract: An ankle prosthesis has a tibial component configured for attachment to a tibia of a person, and a talar component. The talar component has a first surface configured for facing the tibial component and a second surface configured for facing a talus of the person. The second surface has first and second arms attached to it, for pivoting or flexing outwardly in medial and lateral directions, respectively, to engage side surfaces of a previously formed slot in the talus.

Abstract: A patellar clamp and associated system and method for using the clamp are provided. A patellar clamp includes a pair of handles movably coupled together, a patella support portion connected to the pair of handles and configured to engage a first side of a patella, and a reamer guide configured to engage a second side of the patella. The patella support portion and the reamer guide each include a first pair of flanges configured to engage a first and second tendon associated with the patella. The reamer guide is configured to allow reaming and resurfacing the entire desired posterior articular surface of the patella in a single operation without readjusting the position of the reamer guide.

Abstract: A patellar clamp and associated system and method for using the clamp are provided. A patellar clamp includes a pair of handles movably coupled together, a patella support portion connected to the pair of handles and configured to engage a first side of a patella, and a reamer guide configured to engage a second side of the patella. The patella support portion and the reamer guide each include a first pair of flanges configured to engage a first and second tendon associated with the patella. The reamer guide is configured to allow reaming and resurfacing the entire desired posterior articular surface of the patella in a single operation without readjusting the position of the reamer guide.

Abstract: A network communication system includes a plurality of computer systems each of which may operate in accordance with at least one protocol stack assigned to a security level of a multilevel security model. The computer system may perform address discovery or registration for network-layer address(es) with a network for an exchange of data between hosts provided by protocol stacks at respective security levels of the multilevel security model. And the computer system may exchange data between the hosts, with the data being accessible or inaccessible by the hosts according to the respective security levels and mandatory access control information flow policy/policies consistent with the multilevel security model. The address discovery or registration, on the other hand, may be performed using a network management protocol that is trusted and accessible by the hosts without regard to the respective security levels and mandatory access control information flow policy/policies.

Abstract: An adjustable screwdriver for selectively driving an adjustable compression screw into a substrate. A distal tip of a adjustable head driver is configured to engage an adjustable head of an adjustable compression screw. A shaft driver is concentrically disposed in the adjustable head driver. A distal tip of the shaft driver is configured to engage the head of the screw shaft of the adjustable compression screw for use in rotating the screw shaft. The shaft driver is configured to selectively lock in an even driving position, in which the adjustable head driver and the shaft driver cooperatively drive the adjustable head and the screw shaft. The shaft driver is configured to selectively lock in a retracted driving position wherein the distal tip of the shaft driver is recessed in the adjustable head driver to thereby drive the adjustable head without the shaft driver driving the screw shaft.

Abstract: A patellar clamp and associated system and method for using the clamp are provided. A patellar clamp includes a pair of handles movably coupled together, a patella support portion connected to the pair of handles and configured to engage a first side of a patella, and a reamer guide configured to engage a second side of the patella. The patella support portion and the reamer guide each include a first pair of flanges configured to engage a first and second tendon associated with the patella. The reamer guide is configured to allow reaming and resurfacing the entire desired posterior articular surface of the patella in a single operation without readjusting the position of the reamer guide.

Abstract: A surgical instrument for making femoral resections for seating a femoral implant on a distal femur, the instrument configured for orientation relative to an intramedullary rod. The instrument includes a medial distal cut guide having a cut guide portion, the cut guide portion having a cut slot therein for use in resecting a medial distal condyle of the femur. A medial distal cut paddle supports the medial distal cut guide. The medial distal cut paddle is configured to mount on the intramedullary rod to orient the medial distal cut slot substantially along an anterior-medial slope of the medial distal condyle when the medial distal cut paddle is mounted on the intramedullary rod to thereby define an anterior-medial approach for making a medial distal resection of the medial distal condyle.

Abstract: A patellar clamp and associated system and method for using the clamp are provided. A patellar clamp includes a pair of handles movably coupled together, a patella support portion connected to the pair of handles and configured to engage a first side of a patella, and a reamer guide configured to engage a second side of the patella. The patella support portion and the reamer guide each include a first pair of flanges configured to engage a first and second tendon associated with the patella. The reamer guide is configured to allow reaming and resurfacing the entire desired posterior articular surface of the patella in a single operation without readjusting the position of the reamer guide.

Abstract: An instrument assembly for resecting a distal femur for receipt of a knee implant, comprising an intramedullary rod and resection instruments. A valgus portion of the intramedullary rod has series of engagement members positioned to provide a plurality of engagement positions for use in fixing the resection instruments on the valgus portion. The resection instruments are configured to selectively engage and selectively lock on the valgus rod at the engagement positions via the engagement members. The engagement members preferably comprise pairs of substantially vertical indents arranged in parallel along opposing sides of said valgus portions. The resection instruments preferably engages and locks to said engagement members via a sliding rod engagement member. The resection instruments preferably include a distal cut guide having a distal resection slot and a femoral resection block.

Abstract: An anti-backout stylus comprising a stylus and a locking stylus holder. The locking stylus holder engages the stylus at a series of discrete positions during insertion of the stylus into the holder. The locking stylus holder prevents inadvertent backing out of the stylus by preventing the stylus from being withdrawn to a previous one of the discrete positions. The locking stylus holder can preferably be selectively disengaged from the stylus to allow for selective withdrawal of the stylus. Each engagement of one of the discrete positions by the locking stylus holder preferably indicates a femoral size. The discrete positions are preferably defined by detents formed on the stylus and a stop member on the locking stylus holder. The locking stylus holder can be provided on an anterior rough cut guide, with the anterior rough cut guide preferably mountable on an intramedullary rod.

Abstract: An anti-backout stylus comprising a stylus and a locking stylus holder. The locking stylus holder engages the stylus at a series of discrete positions during insertion of the stylus into the holder. The locking stylus holder prevents inadvertent backing out of the stylus by preventing the stylus from being withdrawn to a previous one of the discrete positions. The locking stylus holder can preferably be selectively disengaged from the stylus to allow for selective withdrawal of the stylus. Each engagement of one of the discrete positions by the locking stylus holder preferably indicates a femoral size. The discrete positions are preferably defined by detents formed on the stylus and a stop member on the locking stylus holder. The locking stylus holder can be provided on an anterior rough cut guide, with the anterior rough cut guide preferably mountable on an intramedullary rod.

Abstract: An anti-backout stylus comprising a stylus and a locking stylus holder. The locking stylus holder engages the stylus at a series of discrete positions during insertion of the stylus into the holder. The locking stylus holder prevents inadvertent backing out of the stylus by preventing the stylus from being withdrawn to a previous one of the discrete positions. The locking stylus holder can preferably be selectively disengaged from the stylus to allow for selective withdrawal of the stylus. Each engagement of one of the discrete positions by the locking stylus holder preferably indicates a femoral size. The discrete positions are preferably defined by detents formed on the stylus and a stop member on the locking stylus holder. The locking stylus holder can be provided on an anterior rough cut guide, with the anterior rough cut guide preferably mountable on an intramedullary rod.

Abstract: An instrument assembly for resecting a distal femur for receipt of a knee implant, comprising an intramedullary rod and resection instruments. A valgus portion of the intramedullary rod has series of engagement members positioned to provide a plurality of engagement positions for use in fixing the resection instruments on the valgus portion. The resection instruments are configured to selectively engage and selectively lock on the valgus rod at the engagement positions via the engagement members. The engagement members preferably comprise pairs of substantially vertical indents arranged in parallel along opposing sides of said valgus portions. The resection instruments preferably engages and locks to said engagement members via a sliding rod engagement member. The resection instruments preferably include a distal cut guide having a distal resection slot and a femoral resection block.

Abstract: An anti-backout stylus comprising a stylus and a locking stylus holder. The locking stylus holder engages the stylus at a series of discrete positions during insertion of the stylus into the holder. The locking stylus holder prevents inadvertent backing out of the stylus by preventing the stylus from being withdrawn to a previous one of the discrete positions. The locking stylus holder can preferably be selectively disengaged from the stylus to allow for selective withdrawal of the stylus. Each engagement of one of the discrete positions by the locking stylus holder preferably indicates a femoral size. The discrete positions are preferably defined by detents formed on the stylus and a stop member on the locking stylus holder. The locking stylus holder can be provided on an anterior rough cut guide, with the anterior rough cut guide preferably mountable on an intramedullary rod.

Abstract: An anti-backout stylus comprising a stylus and a locking stylus holder. The locking stylus holder engages the stylus at a series of discrete positions during insertion of the stylus into the holder. The locking stylus holder prevents inadvertent backing out of the stylus by preventing the stylus from being withdrawn to a previous one of the discrete positions. The locking stylus holder can preferably be selectively disengaged from the stylus to allow for selective withdrawal of the stylus. Each engagement of one of the discrete positions by the locking stylus holder preferably indicates a femoral size. The discrete positions are preferably defined by detents formed on the stylus and a stop member on the locking stylus holder. The locking stylus holder can be provided on an anterior rough cut guide, with the anterior rough cut guide preferably mountable on an intramedullary rod.

Abstract: An instrument assembly for resecting a distal femur for receipt of a knee implant, comprising an intramedullary rod and resection instruments. A valgus portion of the intramedullary rod has series of engagement members positioned to provide a plurality of engagement positions for use in fixing the resection instruments on the valgus portion. The resection instruments are configured to selectively engage and selectively lock on the valgus rod at the engagement positions via the engagement members. The engagement members preferably comprise pairs of substantially vertical indents arranged in parallel along opposing sides of said valgus portions. The resection instruments preferably engages and locks to said engagement members via a sliding rod engagement member. The resection instruments preferably include a distal cut guide having a distal resection slot and a femoral resection block.