A semi-condylar artificial knee joint includes a femoral prosthesis and a tibial prosthesis, and the cross-section of said tibial prosthesis is of a kidney-like type. The tibial prosthesis is disposed at one side of the tibial plateau intercondylar eminence and is located below the femoral prosthesis. The artificial knee joint further includes a locating pin for fixing the tibial prosthesis. The bottom surface of said tibial prosthesis is provided with a prosthetic notch, and below said tibial prosthesis is provided with a tibial notch. Said prosthetic notch corresponds to said tibial notch, and together forming a limiting hole for accommodating the locating pin. The cooperation between the locating pin and the limiting hole can ensure relative position stability and balance between the tibial prosthesis and the tibial plateau intercondylar eminence.

A patellar implant includes a body and at least one oblique anchoring pin. The body includes a bone-facing surface that is substantially planar and has a lateral end and a medial end. The body also includes an articulating surface opposite the bone-facing surface. The at least one oblique anchoring pin extends from the bone-facing surface at an acute angle toward the lateral end of the bone-facing surface. The at least one oblique anchoring pin includes a first end attached to the bone-facing surface and a second end spaced from the first end. A longitudinal axis extends from the first end to the second end. The longitudinal axis defines the acute angle with respect to the bone-facing surface. The at least one oblique anchoring pin extends into a surgically-prepared patella when the patellar implant is such that the surgically-prepared patella abuts the bone-facing surface.

An orthopaedic prosthesis includes a femoral component configured to be attached to a distal end of a patient's femur. A tibial tray is configured to be attached to a proximal end of a patient's tibia. A tibial insert is configured to rotate relative to the tibial tray. A modular insert is received in a cavity defined in the tibial insert. The femoral component is rotatably coupled to the body of the modular insert.

A system and method for improving limb function through the use of percutaneous mechanical and neural interfaces. The system generally uses a hollow long bone axial rod that is inserted into the long bone medullary cavity. A transfer rod with a central channel is mounted to the long bone axial rod. An exterior body attachment is connected to the transfer rod and attachment rings attach muscle groups, fascia layers and dermal layers to the transfer rod. Additionally, the system is configured to collect and transmit nerve signaling data to an external processor and additionally configured to transmit data from the external processor to the plurality of nerves.

A system and method for improving limb function through the use of percutaneous mechanical and neural interfaces. The system generally uses a hollow long bone axial rod that is inserted into the long bone medullary cavity. A transfer rod with a central channel is mounted to the long bone axial rod. An exterior body attachment is connected to the transfer rod and attachment rings attach muscle groups, fascia layers and dermal layers to the transfer rod. Additionally, the system is configured to collect and transmit nerve signaling data to an external processor and additionally configured to transmit data from the external processor to the plurality of nerves.

A patellar implant includes a body and at least one oblique anchoring pin. The body includes a bone-facing surface that is substantially planar and has a lateral end and a medial end. The body also includes an articulating surface opposite the bone-facing surface. The at least one oblique anchoring pin extends from the bone-facing surface at an acute angle toward the lateral end of the bone-facing surface. The at least one oblique anchoring pin includes a first end attached to the bone-facing surface and a second end spaced from the first end. A longitudinal axis extends from the first end to the second end. The longitudinal axis defines the acute angle with respect to the bone-facing surface. The at least one oblique anchoring pin extends into a surgically-prepared patella when the patellar implant is such that the surgically-prepared patella abuts the bone-facing surface.

Disclosed herein are a surgical system for patella tracking and a method for selecting a properly-sized patellar implant utilizing the same. The surgical system may include first and second trackers and a patellar tracking system. The first tracker may be configured to contact an unresected or a resected patella, and the second tracker may be configured to contact a bone. The patellar tracking system may be configured to track the first and second trackers during patellar flexion and extension to generate patellar range of motion and patellar trial range of motion. A method for selecting a patellar implant may utilize the first and second trackers and the patellar tracking system.

A femoral component (101) for a knee prosthesis, the femoral component (101) comprising: a body portion (103) having: a lateral portion (109) and a medial portion (111) when in an implanted configuration, wherein a parasagittal plane is located at the intersection between the lateral portion (109) and the medial portion (111); and a patella track (105) extending anterior-posteriorly around the body portion (103), wherein the patella track (105) comprises a first patella track portion (105a) that is directed laterally away from the parasagittal plane as it extends towards a posterior end of the patella track (105).

Disclosed herein are patellar implants and methods to prepare bone for receiving the same. The patellar implant may include an articulating surface and an anterior surface with a non-planar surface to engage with a resected patella. The non-planar surface may include a conically shaped portion to receive the resected patellar bone. A method for resurfacing a patella to implant a patellar implant having a recessed anterior surface may include the steps of determining the minimum implant and resection depth, medial and lateral patellar slope angles to select and resect with a symmetrical reamer.

Disclosed herein are a surgical system for patella tracking and a method for selecting a properly-sized patellar implant utilizing the same. The surgical system may include first and second trackers and a patellar tracking system. The first tracker may be configured to contact an unresected or a resected patella, and the second tracker may be configured to contact a bone. The patellar tracking system may be configured to track the first and second trackers during patellar flexion and extension to generate patellar range of motion and patellar trial range of motion. A method for selecting a patellar implant may utilize the first and second trackers and the patellar tracking system.