24 results about "Distal tibia" patented technology

An ankle joint replacement prosthesis comprises a tibia prosthesis assembly and a talus prosthesis, the tibia prosthesis assembly comprises a tibia prosthesis body and a cushion block, the tibia prosthesis body and the cushion block are in an arc shape with the middle bent upwards on the sagittal plane, the cushion block is arranged at the bottom of the tibia prosthesis body in a sleeving mode, and the surface of the upper portion of the tibia prosthesis body is a tibia joint face. The surface of the lower portion of the cushion block is a first articular surface, the surface of the upper portion of the talus prosthesis is a second articular surface, the second articular surface is in an arc shape with the middle bent upwards on a sagittal plane, the surface of the lower portion of the talus prosthesis is a talus joint surface, and the first articular surface is matched with the second articular surface. When the prosthesis is implanted, only the articular cartilage and the subchondral bone need to be treated at the far end of the tibia, so that the bone at the far end of the tibia is reserved to the maximum extent, the anatomical integrity of the bone is guaranteed, the stability of the prosthesis is enhanced, the service life is prolonged, and the clinical operation effect is improved.

Provided herein are methods of performing knee surgery, which include comparing a lateral distal femoral angle (LDFA) of the knee with a medial proximal tibial angle (MPTA) of the knee and determining a pre-disease alignment of the knee therefrom. Additionally, prognostic and diagnostic methods for use in knee surgery as well as methods of determining an angle of resection for a distal femur and / or a proximal tibia during knee surgery are provided herein. Also provided is an apparatus for assisting a surgeon in performing surgery on a knee of a patient, the apparatus comprising a processor configured for performing the aforementioned methods. A computer-readable medium having stored thereon a computer program, which, when executed by a computer, causes the computer to perform the aforementioned methods is also provided.

TPLO plate includes first and second distal holes and a body with a proximal portion positioned over a proximal tibia segment and a distal portion extending along a longitudinal axis and positioned over a distal tibia segment. The first hole includes an elongated portion extending along the longitudinal axis and an offset portion extending distally from the elongated portion along an offset axis at an angle relative to the longitudinal axis. The second hole extends through the distal portion along the longitudinal axis in alignment with the elongated portion and includes a sloped compression surface along a distal portion. The first hole is such that, when a distal compression to osteotomy cut is applied via insertion of a bone fixation element into the distal portion, the element translates along the offset axis from a central axis to an intersection point to provide a cranial compression to the cut.

The present disclosure relates to an instrumentation system for implanting an ankle prosthesis. In various embodiments, the system includes a cutting assembly including a reaming tool for preparing a cavity within an intramedullary canal of a patient. In further embodiments, the system includes a guide block configured to fasten to a tibia of the patient and couple to the cutting assembly, the tibia having a proximal end and a distal end, wherein the guide block includes one or more alignment guides for guiding the cutting assembly to the intramedullary canal on the distal end for preparing the cavity without affecting a calcaneus or the proximal end of the tibia. In some embodiments, the system includes a distractor for separating the distal tibia from a talus to facilitate preparing the cavity and inserting an ankle prosthesis into the cavity.

Bone plates for engaging bone members are described herein. The bone plates can receive one or more screws to secure the bone plates to an underlying bone member. The one or more screws can be inserted into bone plate holes that can be considered locking or non-locking. The bone plates described herein can have particular combinations of locking and / or non-locking holes. Additional bone plate holes can be used to accept sutures, K-wire, or other instrumentation.

The utility model relates to medical equipment technical field, concretely relates to a kind of distal end front lateral tibia locking steel plate, including distal end steel plate section, connecting portion and proximal end steel plate section being sequentially connected, the connecting portion is from the distal end steel plate section to the proximal end steel plate section setting, uses, the locking position of extension locking steel plate can be adjusted by extension locking component, i.

Provided are a distal medial tibial hemi-epiphysiodesis blocking staple and supporting tools. The distal medial tibial hemi-epiphysiodesis blocking staple includes a tibia arm, an epiphyseal arm and a connecting section. The connecting section is connected with the tibial arm and the epiphyseal arm to form a similar U-shape. The tibial arm and the epiphyseal arm are arranged in parallel and in arc transition with the connecting section to limit a spacing between the distal tibia and the epiphysis. Inverted tooth portions for preventing the hemi-epiphysiodesis distal medial tibial staple from withdrawing are uniformly distributed on the tibial arm and the epiphyseal arm.

The invention relates to an alignment device (1) for a tibial resection guide, comprising: a clamping device (2) which has at least two clamping elements (4, 4a) acting against one another for clamping the distal end of a tibia (3) of a patient; a contact device (6) for contacting the proximal end of the tibia (3), which device comprises a tool guiding device (8) for guiding a tool during the resection of the tibia (3); and a telescopic device (10) which is separably connected to the contact device (6) and adjustably connected to the clamping device (2) and is designed to align the devices (2, 6) with respect to the tibia (3), the telescopic device (10) also having, in its proximal region (52), a decoupling device (12) which is designed to separate the contact device (6) from the telescopic device (10) when activated; and the clamping elements (4) of the clamping device (2) are designed such that the telescopic device (10) can be removed from the tibia (3) with one hand after the decoupling device (12) is activated.

The utility model discloses a metal 3D printing porous bone induction structure tibial prosthesis, which comprises a diaphysis prosthesis, a bone fracture plate and an intramedullary nail, the diaphysis prosthesis is designed according to the anatomical form of the focus part of a patient, the diaphysis prosthesis comprises a solid framework and a porous structure, and a cavity is arranged in the diaphysis prosthesis; the at least two bone fracture plates are connected to the two ends of the diaphysis prosthesis in the tibia direction respectively, and the at least two bone fracture plates are connected with the tibia near end and the tibia far end through screws respectively. The tibia near end comprises a first medullary cavity, the tibia far end comprises a second medullary cavity, the intramedullary nail penetrates through the first medullary cavity, the cavity and the second medullary cavity, and the two ends of the intramedullary nail are connected with the tibia near end and the tibia far end through screws respectively. The utility model can solve the problems of incapability of realizing rapid healing, poor initial stability and poor long-term stability in the existing bone defect reconstruction.

A system and method fare provided for preparing the distal tibia in an ankle replacement via an extra-medullary jig. An extra-medullary jig or C-bracket is positioned on the tibia with a registration reference and positioned with respect to a resection in the distal tibia via an anterior mounting block which is independent of the surface of the tibia. The mounting block allows the adjustment of the stem cartridge with respect to the registration reference such that the stem cartridge is properly aligned within the resection. The C-bracket is further attached to the tibia via an adjustable proximal alignment arm which attaches to a pin embedded in the proximal tibia. The C-bracket aligns the tibia, foot and ankle and the trajectory of the reamer, and is universal with respect to the left and right ankle.

1. Name of the product in this design: Distal Tibial Bone Plate. 2. Purpose of this design: A fixation plate for bone setting. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

An alignment device for a tibial resection guide includes a clamping device having at least two clamping elements acting against one another for clamping the distal end of a tibia of a patient. A contact device for contacting the proximal end of the tibia includes a tool guiding device for guiding a tool during the resection of the tibia. A telescopic device is separably connected to the contact device and adjustably connected to the clamping device. The telescopic device is designed to align the contact device and clamping device with respect to the tibia. The telescopic device has a decoupling device configured to separate the contact device from the telescopic device when activated. The clamping elements are designed such that the telescopic device can be removed from the tibia with one hand after the decoupling device is activated.

A position adjustment device having a tool holder is locked to at least two pins projecting from respective anterior facing locations near a distal end of a tibia of a patient. The position adjustment device is adjusted. The position adjustment device is locked with the tool holder at first coordinates in the proximal-distal and medial-lateral directions. The distal end of the tibia is resectioned with a tool positioned on the tool holder, while the tool holder is in the first coordinates in the proximal-distal and medial-lateral directions. The tool is removed from the tool holder. A tibia trial is placed on the resectioned tibia using the tool holder, while the tool holder is in the first coordinates in the proximal-distal and medial-lateral directions. The tibia trial has a size and shape of a tibial tray of an ankle replacement system.

The present invention provides an ankle joint prosthesis, which includes a tibial stem, a distal tibial prosthesis, and a tibial connector. The tibial stem is configured to be disposed in the medullary cavity of the human tibia; the tibial connector is disposed between the tibial stem and the distal tibial prosthesis so that the tibial stem and the distal tibial prosthesis are connected through the tibial connector. Among them, the tibial connector has a first connecting portion and a second connecting portion. The second connecting portion is used to connect with the tibial stem, and the first connecting portion is used to connect with the distal tibial prosthesis. The first central axis of the first connecting portion and the second central axis of the second connecting portion are arranged in parallel, so as to adjust the position of the second central axis relative to the central axis of the distal tibial prosthesis by rotating the tibial connector relative to the distal tibial prosthesis, and further adjust the position of the tibial stem relative to the distal tibial prosthesis, so that the tibial stem can better adapt to different medullary cavity shapes.

Disclosed is a method of preparing a tibial intramedullary canal for receiving a tibial implant such as a stem component of a total ankle replacement prosthesis where an extended cavity is prepared in the tibial intramedullary canal by pulling a tibial reamer bit in the proximal direction from the distal end of a tibia into the tibial intramedullary canal by using a flexible neck tooling introduced through the tibial intramedullary canal from a position proximal to the distal end of the tibia.

The invention provides a partitioned porous structure ankle joint tibia prosthesis, and relates to the technical field of artificial joint prostheses, the partitioned porous structure ankle joint tibia prosthesis comprises a tibia prosthesis, the upper end face of the tibia prosthesis is of a porous structure, and the lower end face of the tibia prosthesis is of a porous structure. And the pore diameter of the porous structure of the first outer area is different from that of the porous structure of the first inner area. The upper end face of the tibia prosthesis of the ankle joint tibia prosthesis with the partitioned porous structure is provided with the porous structure, the porous structure is divided into the first outer area and the first inner area, the first outer area and the first inner area are different in aperture, and then the first outer area and the first inner area can be matched with a bone trabecula structure at the far end of a tibia in a regional non-uniform distribution characteristic; a porous structure partition of a first outer area and a porous structure partition of a first inner area are arranged on an osseointegration interface in a targeted mode, and therefore bone resorption and secondary prosthesis looseness caused by postoperative stress shielding are reduced.

A calcaneal prosthesis system includes a body having a dorsal surface, a plantar surface, an anterior surface, and a posterior end. The posterior end has a tuberosity. The anterior surface has at least a concavity or convexity shaped for receiving a cuboid bone or mid-foot bone. The dorsal surface includes a convex or concave surface for engaging a talus bone or distal tibia. An integrally formed intramedullary (IM) nail extends from the dorsal surface.

The present invention belongs to the technical field of medical devices, and particularly relates to a closed supra-ankle osteotomy guide for ankle arthritis of the tibia and fibula. It includes a rotation angle adjustment component, a distal tibia and fibula osteotomy component, and a proximal tibia and fibula osteotomy component; the rotation angle adjustment component includes an orbital ring and a height adjustment rod, the orbital ring is provided with scales, the height adjustment rod is slidably connected to the orbital ring, and the height adjustment rod is used to adjust the height; the distal tibia and fibula osteotomy component includes a distal cutting plate, a fixing bolt and a distal osteotomy bracket, and the distal osteotomy bracket includes a nut rod and a distal connecting rod; the proximal tibia and fibula osteotomy component includes a proximal cutting plate, a proximal connecting rod, a sliding sleeve and a cross jacking rod, and one end of the two proximal connecting rods is connected to the proximal cutting plate. The present invention significantly improves the accuracy of supra-ankle closed osteotomy, greatly increases the treatment effect of the operation, avoids the occurrence of medical technical accidents, and is suitable for popularization in clinical medicine.

A calcaneal prosthesis system includes a body having a dorsal surface, a plantar surface, an anterior surface, and a posterior end. The posterior end has a tuberosity. The anterior surface has at least a concavity or convexity shaped for receiving a cuboid bone or mid-foot bone. The dorsal surface includes a convex or concave surface for engaging a talus bone or distal tibia. An integrally formed intramedullary (IM) nail extends from the dorsal surface.

The utility model relates to a locking device aiming at anterior Pilon fracture, which is applied to tibia distal end intra-articular fracture and comprises a locking steel plate, the locking steel plate is used for being attached to the tibia distal end anterior side and comprises a first locking part and a second locking part, a plurality of proximal end common holes are sequentially formed in the first locking part in the length direction, and a plurality of proximal end common holes are formed in the second locking part in the length direction. The second locking part is provided with a far-end directional locking hole and a plurality of far-end universal locking holes, the far-end directional locking hole and the far-end universal locking holes are sequentially formed in the length direction of the second locking part, and the angles of the far-end universal locking holes can be adjusted from the center point to the periphery in the direction, away from the malleolus medialis, of the second locking part. By arranging the angle-adjustable far-end universal locking hole, the positioning accuracy of the locking steel plate in the operation process is improved, the operation time is shortened, injuries in the operation process are reduced, the risk of infection of complications in the later period is reduced, the rehabilitation speed of a patient is increased, and the treatment effect of the patient is improved.

The utility model discloses a pressing, stretching and traction therapeutic apparatus for gonitis. The middle part of a fixed bottom plate is provided with a guide part which is arranged along the length direction of the fixed bottom plate; the reset assembly comprises a sliding plate, the bottom of the sliding plate is in sliding connection fit with the guide part, four traction rods arranged in a rectangular shape are arranged on the upper surface of the sliding plate, each traction rod comprises a telescopic rod, universal shaft joints are fixed to the two ends of each telescopic rod, and one end of each traction rod is fixed to the sliding plate. The reduction plates can be fixed on the left side and the right side of a reduction plate knee joint of a patient in a wrapping manner; the traction assembly comprises a traction seat used for tightly holding the far end of the tibia, the bottom of the traction seat is matched with the guide part in a sliding connection mode, and a power component driving the traction seat to move towards the far end is connected to the traction seat. During treatment, a patient lies on the fixing bottom plate, the knee joint is fixed through the reset assembly, the knee joint can be turned outwards to be reset and pressed downwards through deformation of the four traction rods, and bone displacement is corrected. In addition, the traction assembly performs traction at the far end of the affected limb, so that the knee joint ligament is continuously stretched and recovered.

The present invention provides a 3D printed ankle joint system prosthesis, which includes a titanium alloy talar prosthesis, a cobalt-chromium-molybdenum talar prosthesis, a polyethylene pad, and a distal tibial prosthesis. A matching structure is provided on the top of the titanium alloy talar prosthesis; a bone screw hole is also provided on the titanium alloy talar prosthesis, and a calcaneal fixing hole is provided on the rear end convex part of the titanium alloy talar prosthesis; a microporous structure is provided at the bottom of the titanium alloy talar prosthesis; a fixing structure is provided at the bottom of the cobalt-chromium-molybdenum talar prosthesis; the top of the cobalt-chromium-molybdenum talar prosthesis has an installation opening, and the bottom of the installation opening is provided with a joint sliding surface; the bottom of the polyethylene pad is limited in the installation opening, and the bottom surface of the polyethylene pad is a joint surface; the distal tibial prosthesis is connected to the polyethylene pad, and a locking nail bone plate and an intramedullary nail are provided on the top of the distal tibial prosthesis; and a microporous structure is provided on the distal tibial prosthesis. The present invention can not only achieve the replacement of large-segment bone defects in the ankle joint and restore the range of motion of the ankle joint, but also achieve bone ingrowth and achieve long-term stability of the prosthesis.

A position adjustment device having a tool holder is locked to at least two pins projecting from respective anterior facing locations near a distal end of a tibia of a patient. The position adjustment device is adjusted. The position adjustment device is locked with the tool holder at first coordinates in the proximal-distal and medial-lateral directions. The distal end of the tibia is resectioned with a tool positioned on the tool holder, while the tool holder is in the first coordinates in the proximal-distal and medial-lateral directions. The tool is removed from the tool holder. A tibia trial is placed on the resectioned tibia using the tool holder, while the tool holder is in the first coordinates in the proximal-distal and medial-lateral directions. The tibia trial has a size and shape of a tibial tray of an ankle replacement system.

The utility model belongs to the technical field of bone setting, and discloses a tibia far-end rear side dissection locking plate which comprises a bone setting plate head and a bone setting plate rod, the near end of the bone setting plate rod and the bone setting plate head are integrally formed, the shape of the bone setting plate head is matched with that of a bone on the tibia far-end rear side, and the bone setting plate head is attached to the bone on the tibia far-end rear side. The near end of the bone fracture plate rod part is circumferentially twisted along the length direction of the bone fracture plate rod part from the far end of the bone fracture plate rod part, so that the bone fracture plate rod part is matched with the shape of a tibia backbone. The tibia far-end rear side dissection locking plate is lengthened, the bone fracture plate head is attached to the bone on the tibia far-end rear side, the near end of the bone fracture plate rod is attached to the inner bone face on the rear side of the tibia backbone, and the far end of the bone fracture plate rod is close to the outer side of the tibia to be attached due to torsion of the bone fracture plate rod. The tibia far-end rear side fracture is admitted from the far-end rear outer side, and the tibia backbone fracture is admitted from the weak position of the rear inner side muscle soft tissue, so that the tibia far-end rear side fracture and the tibia backbone are fixed at the same time.