Abstract: Implantable medical devices are provided. In one embodiment, a device includes a body having an external surface defining an outer profile of the device. The body includes a porous matrix including a series of interconnected macropores defined by a plurality of interconnected struts each including a hollow interior. A filler material substantially fills at least a portion of the series of interconnected macropores. The external surface of the body includes a plurality of openings communicating with the hollow interior of at least a portion of the plurality of interconnected struts. In a further aspect of this embodiment, the external surface includes exposed areas of the filler material and porous matrix in addition to the exposed openings. In another aspect, the porous matrix is formed from a bioresorbable ceramic and the filler material is a biologically stable polymeric material. Still, other aspects related to this and other embodiments are also disclosed.

Abstract: An osseointegratable prosthetic device suitable for implantation via a one-step surgical process includes a threaded insertion end, an externally accessible tool interface end, and an intermediately arranged scaffold portion defining recesses that permit ingrowth of skeletal tissue. Such recesses may include multiple longitudinal fins as well as transverse ribs, which may embody or be coated with porous material to promote bone ingrowth. A split flange portion includes discontinuous portions and may permit pretensioning of the device. The device may be fabricated as a unitary body structure from thermoplastic materials using techniques such as fused filament fabrication (a form of 3D printing). The osseointegratable prosthetic device enables one-step surgical implantation without requiring separately implantable fixture/sleeve and abutment portions according to conventional osseointegratable prosthetics. Methods for fabricating an osseointegratable prosthetic device are further provided.

Abstract: Acetabular prosthesis comprising an acetabular cup, an acetabular insert, able to be stably coupled inside the acetabular cup and configured to receive an articulation head and a centering unit configured to guide and center the insertion and stable positioning of the acetabular insert in the acetabular cup. The centering unit comprises a centering hole provided in the acetabular cup and a centering pin provided on the acetabular insert and which develops along a centering axis, configured to be inserted in the centering hole. The centering pin is provided with an external lateral surface that has an undulating development along the centering axis.

Abstract: The invention relates to a femoral component (1) of a knee replacement assembly. The knee replacement assembly is arranged to articulate about an articulation axis (X). The femoral component comprises an outer surface (100), wherein the outer surface is arranged to define a replacement condyle; and an inner surface (200), opposed to the outer surface, wherein the inner surface is adapted for attachment to a prepared distal femur. The inner surface comprises portions (210, 220, 230, 240) provided with mutually-parallel ridges (201) and grooves (202). The ridges and grooves are arranged to provide an increased or reduced stiffness of the femoral component when cantilevered about the articulation axis compared with a stiffness of the femoral component when cantilevered about a transverse axis.

Abstract: Various embodiments of the present invention generally relate to prosthetic partial finger designs that can mimic the last two joints of the finger. Some embodiments include a proximal phalange, a distal phalange coupled to the proximal phalange, and a knuckle track (e.g., formed in an arc). The knuckle track can be moveably coupled to the proximal phalange an may include multiple teeth formed on which the proximal phalange slides along. A ratcheting mechanism can contact the multiple teeth to allow sliding in only a first direction while the ratcheting mechanism is engaged. Some embodiments include a release mechanism (e.g., a button) configured to disengage the ratcheting mechanism from the multiple teeth to allow the distal phalange to slide in a second direction. In some embodiments, the device may include a spring-back capability that automatically extends the finger after reaching full finger flexion, enabling one-handed use.

Abstract: Embodiments of an implant assembly for reverse shoulder arthroplasty is disclosed. In one embodiment, the implant assembly comprises a humeral component and an adaptor coupled to the humeral component. The humeral component comprises a stem portion and a neck portion. The stem portion is configured for fixation to a humerus, and the neck portion is angularly oriented relative to the stem portion. The adaptor comprises a first bearing surface and a second bearing surface opposite the first bearing surface. The first bearing surface interfaces with an articulating surface of the neck portion to allow the adaptor to rotate relative to the humeral component in a plane that is generally parallel to the articulating of the neck portion. The second bearing surface is configured to interface with a glenosphere component to allow the glenosphere component to articulate relative to the adaptor.

Abstract: A surgical shoulder articulation replacement method is provided. The method can include providing a humeral implant having a hollow stem. The hollow stem can be provided with a sharp distal edge. The method can include impacting the humeral implant in a cancellous bone of a humeral head of a patient, with the sharp distal edge cutting the cancellous bone in the process.

Abstract: The present inventions relate to devices and methods that improve the positioning and fit of orthopedic reconstructive joint replacement stem implants relative to existing methods. For example, an embodiment of the device provides a stem component comprising proximal and distal body portions that can be configured to mimic a geometric shape of a central cavity region created in a bone of a joint for improving conformance and fixation of the stem component thereto. Further, another embodiment provides a system of stem implants that each have a unique medial offset for facilitating the matching of an implant to the geometry of a central cavity region of a bone. Additionally, an inclination angle of a resection surface of each of the implants in the system can remain constant or vary as a function of the medial offset.

Abstract: Prosthetic implant devices and related methods are provided. The prosthetic implant devices include an internal component and an external component. The internal component has an implant portion associated with one or more rare earth magnets. The internal component being of a size and shape suitable for surgical implantation into the residual limb of the amputee. The one or more rare earth magnets generate at least one magnetic field. The external component having a prosthetic piston associated with a plurality of magnetic elements and a prosthetic cup associated with a magnetic array. The magnet elements of the prosthetic piston being in adaptable magnetic association with the at least one magnetic field generated by the one or more rare earth magnets.

Abstract: A modular transdermal assembly configured to couple an external prosthetic device to a bone stump. The assembly includes a modular transdermal portion and a bone fixator. The modular transdermal portion includes an interface portion configured to couple with the external prosthetic device. The bone fixator is configured to be secured to the bone stump and couple with the modular transdermal portion to retain the modular transdermal portion relative to the bone stump.

Abstract: A handheld device includes a base comprising a handgrip for receiving a vibration movement, a gripping element linked to the base for releasably connecting the handheld device to an object, at least one inertia sensor for detecting an acceleration of the vibration movement to generate an acceleration signal, a processing unit for determining to generate a cancellation decision according to the acceleration signal, and at least one actuator for controlling movement of the gripping element according to the cancellation decision, such that the acceleration is counteracted.

Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.

Abstract: The present technology relates generally to devices and methods for arthroplasty procedures. In some embodiments, for example, a device is disclosed for use during an arthroplasty procedure of a joint of a patient, the joint extending between a first joint end of a first bone and an abutting second joint end of a second bone of the patient. The device includes an end plate configured and arranged for disposing over the first joint end of the first bone, a longitudinal plate extending from the end plate and configured and arranged for disposing along a medial, longitudinal surface of the first bone, and a stem extending from the end plate and suitable for extending along an intra-medullary canal of the first bone. When installed, at least one fastener extends at least partially through the first bone and couples the longitudinal plate to the first bone.

Abstract: A liner with at least three substantially equally spaced attachment areas arranged longitudinally from the proximal to the distal end of the liner so as to permit relief areas between attachment areas and increase the radial thickness of the liner in the area of the liner inherently or through the addition of shims or other materials at the attachment areas. The liner and shims can be selected from a kit of different shaped liners and shims. Methods for making such a liner or liners for a kit. A method for iteratively attaching shims to the liner to prevent substantial movement of a limb's skeletal structure when the liner is worn with a socket.

Abstract: The strength of bone implant attached to a bone is improved by using hybrid inserts which have stems and wings having bone ingrowth surface features and caps having outer surfaces of cured polymethyl methacrylate (PMMA). The stems and wings of the hybrid inserts are inserted into living bone and the bone implant is attached to the hybrid inserts with PMMA cement. Over time, the bone grows into the bone ingrowth surface features. The bone ingrowth strengthens the bonding of the hybrid inserts and the bone implant with the bone over time. The hybrid inserts increase the shear, tensile and torque strength of the bone implants. Bone inserts that do not have ingrowth surface features loosen over time.

Abstract: Bone joint implants are described herein. The bone joint implants may comprise a metallic proximal platform configured for translational motion on the trapezium bone; a distal stem configured for intramedullary engagement with an end of the first metacarpal bone; an articulating coupling between the proximal platform and distal stem; and a proximal non-metallic wear surface and a distal non-metallic wear surface.

Abstract: A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.

Abstract: The present disclosure provides methods and systems for receiving, with processing circuitry of an implant device, an electrical signal from a free tissue graft attached to a portion of a nerve (e.g., a nerve branch or fascicle) through an electrical conductor in electrical communication with the free tissue graft (e.g., muscle graft), the nerve having reinnervated the free tissue graft. The electrical signal from the free tissue graft has a voltage amplitude of greater than or equal to about 150 microvolts. The processing circuitry stores signal data corresponding to the electrical signal from the free tissue graft in a memory accessible to the processing circuitry.

Abstract: A prosthetic foot is provided with a forefoot spring, a heel spring and a base spring. The base spring is connected to the heel spring and to the forefoot spring. The base spring has receiving means for the forefoot spring and the heel spring, into which receiving means the heel spring and the forefoot spring can be inserted. The heel spring is connected to the forefoot spring via a coupling element, and the coupling element extends forwards along the forefoot spring at least via one portion thereof.

Abstract: Catapult ankles and related methods are disclosed. An example ankle prosthesis for operation in a swing phase and in a stance phase includes a motor, wherein the motor is configured to store energy with a first spring during the swing phase and plantarflex the ankle prosthesis during a push off portion of the stance phase.