An assembly for guiding resection of a femur and tibia of a knee joint in preparation for installing a femoral and tibial knee components. For example, the assembly can include tibial and femoral IM rods to which are connected through a tensioning bolt that allows controlled adjustment of the distraction of the tibia and femur during cut positioning in a range of flexion angles. Also, the assembly is usable with relatively small, noninvasive approaches to the knee joint by way of relatively narrow, low profile components that attach to tibial and femoral IM rods. Further, the assembly includes several quick-release components to allow fast assembly and disassembly in a surgical setting. Each of these aspects, along with the ability of the assembly to accurately guide initial reference cuts to the tibia and femur, promotes an improved outcome for the patient.

Provided is an intramedullary (IM) rod for bone fixation. The IM rod is configured to be placed in an intramedullary cavity of a center portion of a part of a fractured bone which is required to be fixed to another part of the fractured bone, and lengthily extends in a direction of the part of the fractured bone, wherein the IM rod includes a plurality of guide holes configured to guide fasteners which are inserted through the part of the fractured bone and fastened to the other part of the fractured bone, and the plurality of guide holes include a main hole and a pair of sub-holes provided at positions forming vertices of a triangle together with the main hole.

A stent is disclosed that has an elongated body having a proximal end, a distal end, at least one open spiral channel formed on the exterior surface of the body to provide fluid communication between the proximal end and the distal end. The stent also has a central lumen open at the proximal and distal ends of the stent for the passage of a guide wire. A method for using the stent and a kit containing the stent are also disclosed.

The invention relates to a longitudinal bone implant with a substantially circular cross-sectional profile, comprising a front section having a front end and a shaft section having a rear end, wherein the front section comprises at least three longitudinal groove-like cut-outs extending in the axial direction of the front section and opening towards the front end of the implant, circumferentially alternating with at least three longitudinal, radially protruding ribs extending in an axial direction, wherein the ribs have an increased cross-sectional width in the section radially more distant to the central longitudinal axis of the implant as compared to the width in a section radially closer to the central longitudinal axis of the implant. Furthermore, the invention relates to uses of the implant and methods that employ the implant.

An implantable compensating sleeve is applied between an oblong implant section of a first implant, and a second implant that encloses the oblong implant section of said first implant. The compensating sleeve has a sheath having a sheath body and a passage, running from the proximal to the distal end of the sheath body, for receiving said oblong implant section of the first implant. The sheath body is divided, by slits which cut into the sheath body in the longitudinal direction and originate alternately from the distal and from the proximal edge of the sheath body, into meander-like segments each comprising two longitudinal arms. The sheath body is radially expandable in at least one subsection. On the inner surface of the sheath body facing the passage, at least one bulge extends in the longitudinal direction of a meander-like segment, forming an inner profile that protrudes into the passage.

In one embodiment, an intramedullary nail has a body that includes proximal and distal ends and an inner surface that defines at least one locking hole that extends into an outer surface of the body so as to receive a bone anchor to lock the nail in a medullary canal of a bone. The body has a first biocompatible material that defines at least a portion of the outer surface. The nail has a second material that is different from, and at least partially encapsulated in, the first material. The second material can produce at least one of an electrical current and a magnetic field, and is supported by the nail body such that a position of the at least one bone-anchor locking hole can be detected based on the at least one of the electrical current and the magnetic field.

Intramedullary nails are provided for the fixation of epiphyseal fragments in a long bone of a patient in need thereof. The intramedullary nails have a cap portion that allows for fixation of the epiphyseal bone fragments thereto, and an intramedullary shaft for insertion into the medullary canal of the long bone. The intramedullary nails can provide for fixation of comminuted fractures that are difficult to treat with conventional methods. In some aspects, the patient is a human patient and the fracture is a Mason type II radial head fracture or a Mason type III radial head fracture. Methods of fixation of epiphyseal fractures using the intramedullary nails of the present disclosure are also described.

Provided herein are bone anchor devices including embodiments using adaptive materials, including shape memory materials such as shape memory alloys. Embodiments using shape memory alloys may use super-elastic properties of shape memory alloys to provide forces and deflections that actuate bone anchoring element(s) within bones. Embodiments of bone anchoring elements may be created that actuate with respect to one or more pivot point(s), with the bone anchoring elements on an opposite side of the pivot point from the actuating member composed of, for example, shape memory material. The pivot point(s) of a bone anchor device may be positioned in a central portion of the bone anchor device. The central portion of the bone anchor device may span between two pieces of bone or two separate bones (e.g., two bones of a joint) into which bone anchoring elements may be embedded and fixed.

Intramedullary nails, systems, and methods. The intramedullary nail may include a generally elongate body extending from a first, distal end to a second, proximal end. The distal end may include one or more openings configured to receive one or more bone anchors that extend transversely through the distal end intramedullary nail, and thereby configured to secure the distal end of the nail. The proximal end may also include one or more openings configured to receive one or more bone anchors that extend transversely through the proximal end of the intramedullary nail, and thereby configured to secure the proximal end of the nail. In some embodiments, the proximal end may further include a cross-locking feature, which includes a second bone anchor that interlocks with a first bone anchor, for example, for enhanced bone purchase and bony fixation.

A stent is disclosed that has an elongated body composed of a bioabsorbable polymer having a proximal end, a distal end, two open spiral channels formed on the exterior surface of the body to provide fluid communication between the proximal end and the distal end. The stent also has a central lumen open at the proximal and distal ends of the stent for the passage of a guide wire. A method for using the stent and a kit containing the stent are also disclosed.