A device, having a housing; a power source configured to supply electrical power to a conductive percutaneous implant in a circuit including the conductive percutaneous implant and tissue of a patient adjacent to the conductive percutaneous implant; an electrical sensor configured to generate a signal indicative of at least one electrical parameter of the circuit; and at least one data processing system having one or more processors configured to receive the signal and analyze the signal to determine at least one of a presence or change of infection of the tissue, and pass a control signal to the power source to vary the electrical power responsive to determining at least one of the presence or change of infection of the tissue.

A device, having a housing; a power source configured to supply electrical power to a conductive percutaneous implant in a circuit including the conductive percutaneous implant and tissue of a patient adjacent to the conductive percutaneous implant; an electrical sensor configured to generate a signal indicative of at least one electrical parameter of the circuit; and at least one data processing system having one or more processors configured to receive the signal and analyze the signal to determine at least one of a presence or change of infection of the tissue, and pass a control signal to the power source to vary the electrical power responsive to determining at least one of the presence or change of infection of the tissue.

A radiography aid and method of using the same comprising: attaching a radiographic reference device to the external fixation device, the radiographic reference device comprises at least two surfaces; positioning the first surface of the radiographic reference device on an imager surface to capture a first radiographic image of the external fixation device and the one or more objects; repositioning the external fixation device to position the second surface of the radiographic reference device on the imager surface to capture a second radiographic image of the external fixation device and the one or more objects that differs in position from the first radiographic image by the first angle; and calculating the position of the one or more objects in three dimensions.

A polyaxial bone anchoring device includes a receiving part with a rod receiving portion defining a recess for receiving a rod, and a head receiving portion with a wall that defines an accommodation space for accommodating a head of an anchoring element, and a locking member positionable at least partially around the head receiving portion and movable from a first position where the head can pivot in the accommodation space to a second position where an angular position of the head is locked. The wall of the head receiving portion further defines at least one cavity in communication with the accommodation space that reduces a radial thickness of at least part of the wall located between the accommodation space and the locking member, and at least part of the cavity is separated radially from the accommodation space by a portion of the wall.

An external orthopedic fixation device. The external orthopedic device includes a radius fixing member, a metacarpus fixing member, and a coupling member. The radius fixing member is configured to be secured to a radius bone of a patient. The metacarpus fixing member is configured to be secured to a metacarpus bone of the patient. The coupling member is disposed between the radius fixing member and the metacarpus fixing member. The coupling member is configured to connect the radius fixing member and the metacarpus fixing member.

A dynamic foot plate assembly structured for therapeutic use adjacent the ankle area of the body comprising a base element, at least one side element extending along the ankle area, and at least one joint movably and adjustably connecting the base element to the side element for variable displacement of the base element and side element into different operative orientations. The dynamic foot plate assembly may also comprise a plurality of strut members disposed in an interconnecting relationship between either a support member and a side element, or the support member and the base element. The strut members, if present, facilitate the variable relative displacement of the base element, side element and support member into different operative orientations.

The present application provides external bone fixation systems. The systems include one or more pairs of bone fixation platforms in the form of rings or partial rings. The platforms may be coupled to corresponding bone segments. The pair of platforms are configured to accept a plurality of struts extending therebetween. The struts are configured to attach to the platforms via joints that provide three degrees of rotation. The struts are also configured such that their longitudinal length extending between the joints/platforms can be incrementally adjusted while attached to the platforms. The struts are further configured such that their total range of length adjustment can be increased by coupling at least one add-on component to the struts in situ. The lengths of each of the plurality of struts may be adjusted to arrange the platforms, and thereby the bone segment coupled thereto, in particular relative positions and orientations.

A method of performing a bunion surgery may involve positioning a first portion of a bone positioning device over a first cuneiform and positioning a second portion of the bone positioning device over a first metatarsal with the bone positioning device extending across a joint separating the two bones. The second portion of the bone positioning device can be adjusted relative to the first portion about a first axis and about a second axis. The method may involve moving the second portion of the bone positioning device relative to the first portion of the bone positioning device about the first axis and the second axis, thereby moving the first metatarsal relative to the first cuneiform in a first plane and a second plane. The method may also involve fixing a position of the first metatarsal relative to the first cuneiform with a bone connector.

A joint of an external retaining device for fragments of a bone (external fixator) with circular ribs and grooves having a V-shaped cross-section, the flanks of which form frustum-shaped friction surfaces, which enable a high friction force to prevent rotation of the joint, and thereby prevent inadvertent displacement of the retaining device, and enable adjustment of the retaining device using an adjustable friction force for aligning the fragments of the bone.

A device, having a housing; a power source configured to supply electrical power to a conductive percutaneous implant in a circuit including the conductive percutaneous implant and tissue of a patient adjacent to the conductive percutaneous implant; an electrical sensor configured to generate a signal indicative of at least one electrical parameter of the circuit; and at least one data processing system having one or more processors configured to receive the signal and analyze the signal to determine at least one of a presence or change of infection of the tissue, and pass a control signal to the power source to vary the electrical power responsive to determining at least one of the presence or change of infection of the tissue.