An anatomically customized plantar bone plate and system for an angularly stable fixation for the arthrodesis of the tarsometatarsal I joint. The bone plate has a distal plate portion which extends in the longitudinal direction and in which a distal bore is formed for receiving a bone screw at a stable angle, a proximal plate portion which extends transverse to the longitudinal direction, and a central plate portion which extends between the distal and the proximal plate portions and which is made with a curved plate portion with at least one bending zone for the purpose of anatomical customization. A plantar bore for receiving a bone screw to be fixed to the sole of the foot at a stable angle and a bore that is medially inclined for receiving a bone screw to be fixed in a medially inclined manner at a stable angle are arranged in the proximal plate portion adjacently to each other transverse to the longitudinal direction.

At least one bone fixation device comprising a stem having a maximum outer diameter is inserted into the sacroiliac joint through a minimally invasive incision path sized approximately at or about the maximum outer diameter of the stem in soft tissue, into the iliac bone, across the sacroiliac joint and into the sacrum. The stem is inserted through the incision path to a position within the sacroiliac joint between the iliac bone and the sacrum, to fuse the sacroiliac joint, without invasive joint preparation, removal of cartilage, or scraping at or near the sacroiliac joint. Desirably, at least a portion of the stem includes a surface permitting bony in-growth.

The sacral-iliac joint between an iliac and a sacrum is fused either by the creation of a lateral insertion path laterally through the ilium, through the sacral-iliac joint, and into the sacrum, or by the creation of a postero-lateral insertion path entering from a posterior iliac spine of an ilium, angling through the sacral-iliac joint, and terminating in the sacral alae. A bone fixation implant is inserted through the insertion path and anchored in the interior region of the sacrum or sacral alae to fixate the sacral-iliac joint.

Orthopedic implants having a bone interface member and a water swellable IPN or semi-IPN with a stiffness, hydration, and/or compositional gradient from one side to the other and physically attached to the bone interface member. The invention also includes an orthopedic implant system including an implant that may conform to a bone surface and a joint capsule. The invention also includes orthopedic implants with water swellable IPN or semi-IPNs including a hydrophobic thermoset or thermoplastic polymer first network and an ionic polymer second network, joint capsules, labral components, and bone interface members. The invention also includes a method of inserting an orthopedic implant having a metal portion and a flexible polymer portion into a joint, including inserting the implant in a joint in a first shape and changing the implant from a first shape to a second shape to conform to a shape of a bone.

Various bone fixation/fusion devices are sized and configured to be placed across fracture fragments or between bones that are to be fused.

A method for applying compression to a joint includes providing an intramedullary fixation assembly having a proximal screw member positioned at a proximal end of the intramedullary fixation assembly and a lag screw member positioned at a distal end of the intramedullary fixation assembly. Medullary canals are drilled in a first and second bone and the medullary canals are reamed. The proximal screw member is inserted into the first bone and a drill is used create a dorsal hole in the first bone. The lag screw member is slideably coupled to the dorsal hole and to the proximal screw member and into the second medullary canal. A torque is applied to the lag screw member to apply compression to the joint.

A fusion plate (1, 20) to assist fusion of a first bone (2) and second bone (3) comprising a rigid elongated plate configured to span the joint between the first and second bones having a C-shaped profile along its length, a thickness of 0.5 to 1.5 mm, and a plurality of holes (11) to receive bone-fixing screws (12) to fix the plate to the first and second bones, wherein the plurality of holes include at least one proximal hole disposed on each side (9, 10) of a proximal end (7) of the plate configured to receive proximal bone fixing screws (12) in an orthogonal fixing screw configuration and at least one hole disposed on each side (9, 10) of a distal end (8) of the plate configured to receive distal bone fixing screws in an orthogonal fixing screw configuration. The plate may be configured for dorso-medial attachment and fusion of a meta-tarsal joint selected from a MetaTarsoPhalangeal joint (MTPJ) and a TarsoMetaTarsal Joint (TMTJ) of the big toe.

Devices and methods are disclosed for joint replacement.

A joint between two bone segments is fused by passing an elongated, rectilinear bone fusion device over a guide pin across the joint and into tight engagement within bores formed in the bone segments, to thereby restrict movement of the elongated bone fusion device across the joint. The elongated, rectilinear bone fusion device also provides bony in-growth within the bores along the exterior surface of the bone fusion device.

Bone fusion system, plate system, guide, implant, kit and methods for using the bone fusion system, plate system, guide and implant are disclosed. The bone fusion system includes an alignment guide, an implant, and at least one fastener inserted through the implant. The alignment guide includes a body portion, a first lobe positioned at a first end of the body portion, a second lobe positioned at a second end of the body portion, and an extension member extending away from a first side of the body portion. The implant includes a body portion, a first arm extending away from the body portion in a first direction, a second arm extending away from the body portion in a second direction, and a third arm extending away from the body portion laterally between first and second arms. Finally, methods for using the bone fusion system, plate system, guide and implant are disclosed.