33 results about "Proximal tibia" patented technology

Bone plates are disclosed for veterinary uses. For example, the bone plates could be utilized for repairing medial patellar luxation in animals, such as canines, felines, or equines, for example. The bone plates may include various features for better accommodating the anatomy and native tissue structure of the proximal tibia of the animal.

The application discloses a mechanical locking type tibial platform, a tibial prosthesis and a knee joint prosthesis. The mechanical locking type tibial platform comprises a platform holder used for being attached to the proximal end of a tibia, a middle column extending downward along the center of the platform holder and used for being inserted into the marrow cavity of the tibia, an axial hole being arranged in the center of the middle column, a sleeve arranged in the axial hole of the middle column, a limiting structure being arranged on the outer wall of the sleeve, the limiting structure being configured to cooperate with the middle column to enable the sleeve to slide only in the axial direction of the axial hole, a fastener connected to the sleeve and protruding from the outer side wall of the middle column and used for being inserted into the cortical bone of the tibia, and a stand column, one end of the stand column being provided with a limiting block used for abutting against the top surface of the platform holder, and the other end of the stand column being provided with a threaded segment which is threadedly connected to the inner wall of the sleeve. The cooperation of the stand column, the sleeve and the fastener can lock the platform holder to the proximal end of the tibia and ensure the initial stability of the tibial platform.

The utility model belongs to the field of medical instruments, and provides a tibia osteotomy guide plate which comprises a tibia osteotomy guide part, a tibia first attaching part and a tibia second attaching part, and the tibia osteotomy guide part is provided with a tibia osteotomy groove; the tibia first attaching part is connected with the tibia osteotomy guide part, and the tibia first attaching part is provided with a tibia first attaching face used for being attached to a tibia articular face; the second tibia attaching part is connected with the tibia osteotomy guiding part, the second tibia attaching part is provided with a second tibia attaching face used for being attached to the side face of the near end of the tibia, and the second tibia attaching part is provided with a tibia positioning hole; wherein a tibia side anti-skid structure is formed on the tibia first binding surface and / or the tibia second binding surface. The tibia osteotomy guide plate can be stably and accurately attached to the proximal end of the tibia.

According to one example, a bearing component for a knee arthroplasty is disclosed. The bearing component can optionally comprise any one or combination of: a medial compartment having an medial articular surface with a medial articular track and having a first thickness as measured at the medial articular track between the medial articular surface a medial distal surface; and a lateral compartment having a lateral articular surface with a lateral articular track and having a second thickness as measured at the lateral articular track between the lateral articular surface a lateral distal surface; wherein the medial articular surface at the medial articular track and the lateral articular surface at the lateral articular track each have an inclination so as to form an acute angle with respect to a resected proximal surface of a tibia.

Disclosed herein are systems and methods for planning a knee arthroplasty procedure. In one example, a surgical method includes intraoperative measurement of patient anatomical information of the knee and / or movement of the knee of a patient resulting from electrical stimulation of nerves or muscles to cause articulation of the knee. An electrical stimulation system may be attached to a patient to cause contraction / relaxing of muscles operative to cause articulation of the knee. Tracking elements may be associated with relevant knee anatomical structures, such as the proximal tibia, the distal femur, and / or the patella to track the movement of the knee components resulting from the electrical stimulation. Implant components may be selected, positioned, and / or orientated using the tracking information resulting from the electrical stimulation, thereby allowing for determination of a surgical plan based on intraoperative muscle-activated knee articulation, configured to emulate natural patient anatomy and kinematics.

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 method for treating an articular fracture of a tibia using a tibia plate with an extension arm, including: making an incision to expose the tibia; reducing the articular fracture of the tibia; contouring the tibia plate to fit the tibia; preliminarily fixing the tibia plate to the tibia; placing a screw partially into the tibia through a lateral elongated hole in the tibia plate; applying compression between a plate screw hole in the extension arm and an anterior surface of the tibia; and placing additional plate screws in the tibia through additional screw holes in the tibia plate.

The invention provides a proximal tibia telescopic integral bone taking and grafting device, and belongs to the technical field of medical instruments. Comprising a handle, a conveying pipe is slidably connected into the handle, a funnel is fixedly connected to the outer wall of the conveying pipe, and a first annular sliding groove is formed in the inner wall of the end, close to the handle, of the conveying pipe; and the bone grafting assembly is used for assisting medical staff to perform bone grafting on the collapsed tibial plateau of the patient, and the bone grafting assembly is connected with the handle, the conveying pipe and the first annular sliding groove. By arranging the bone grafting assembly, the jacking area of a tibial plateau can be increased by matching deformation of a first connecting rod and a second connecting rod with a jacking piece, and meanwhile, a gap generated by deformation of the first connecting rod and the second connecting rod is matched with a discharging groove, so that a bone tunnel can be filled with filler conveyed by an auger from multiple directions; the jacked tibial plateau is preliminarily fixed, and it is avoided that when a subsequent bone grafting device is separated from a bone tunnel, the tibial plateau sinks and collapses, and resetting of the tibial plateau is affected.

The invention relates to the field of medical instruments, in particular to a differentiated tibial plateau prosthesis system which comprises a plateau base, an inner side gasket, an outer side gasket and a central stand column. The platform base is provided with an inner side platform, a stand column platform and an outer side platform, and the stand column platform is located between the inner side platform and the outer side platform; the inner gasket is connected to the inner platform, the outer gasket is connected to the outer platform, and the central stand column is connected to the stand column platform; in the preset direction, the height of the outer side platform is larger than that of the inner side platform, and the inner side platform is flush with the stand column platform. The differentiated tibial plateau prosthesis system is matched with an artificial thighbone prosthesis for use, can effectively retain the bone mass of the proximal end of the tibia on the outer side of the knee joint, enables gaps between the inner side and the outer side of the knee joint which are originally large in difference to be balanced, reduces the requirement for releasing soft tissue on the inner side, avoids excessive releasing and stripping of the soft tissue of the knee joint, relieves the degree of postoperative pain, and improves the patient compliance. And the postoperative rehabilitation process is accelerated.

The application discloses a tibiofemoral joint line included angle measuring method and related device. Wherein, the method comprises: segmenting the femur and tibia in the three-dimensional medical image to obtain the femur point cloud set and the tibia point cloud set; determining the femur distal articular surface tangent line based on the femur point cloud set and determining the tibia proximal articular surface tangent line based on the tibia point cloud set; determining the tibiofemoral joint line included angle based on the femur distal articular surface tangent line and the tibia proximal articular surface tangent line, so as to not only automatically identify and determine the femur articular surface tangent line, eliminate the subjective error when manually drawing the tangent line, ensure the objectivity and consistency of the tangent line positioning, but also realize the full-automatic measurement of the tibiofemoral joint line included angle, avoid the visual deviation when manually measuring the angle, significantly improve the accuracy and repeatability of the measurement result, and provide reliable quantitative indexes for the diagnosis and treatment, operation planning and curative effect evaluation of the knee joint disease.

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.

Surgical instrument (1) for use in knee replacement surgery, comprising a first fastening device (100) which is designed for detachable fastening to a reference component (600) attached to a distal femur (F), a second fastening device (200), which is spaced distally from the first fastening device (100) and is designed for detachable fastening to a tibial cutting block (700) for cutting on a proximal tibia (T), a circular arc guide (300) which is connected at one end to the first fastening device (100) and at the other end to the second fastening device (200) and by means of which the second fastening device (200) is guided linearly movable relative to the first fastening device (100) in a sagittal guide plane (E) along a longitudinally extended circular arc guide track (C), a first linear guide (400) by means of which the circular arc guide (300) is connected at one end to the first fastening device (100) and is guided linearly movable relative to the same in the guide plane (E) along an anteroposteriorly longitudinally extended first guide track (L1), and a second linear guide (500), by means of which the second fastening device (200) is connected at the other end to the circular arc guide (300) and is guided linearly movable relative to the same in the guide plane (E) along an anteroposteriorly longitudinally extended second guide track (L2).

The invention discloses a fibula far-end downward-moving single-arm external fixing device, and relates to the technical field of orthopedic external fixing frames, the fibula far-end downward-moving single-arm external fixing device comprises a first fixing assembly and a second fixing assembly, the first fixing assembly comprises a first fixing frame, an upper sliding clamping block, a first kirschner wire, a lower sliding clamping block and a second kirschner wire, the first fixing assembly comprises a first fixing frame and a first kirschner wire, the upper sliding clamping block and the lower sliding clamping block are arranged on the first fixing frame in a sliding mode and locked through a locking device, the first kirschner wire penetrates through the upper sliding clamping block to be fixedly connected with the proximal tibia end or the proximal fibula end, and the second kirschner wire penetrates through the lower sliding clamping block to be fixedly connected with the distal fibula end; the second fixing frame is fixedly connected with the first fixing frame, the third kirschner wire penetrates through the second fixing frame and is fixedly connected with the far end of the fibula of the patient, and the second kirschner wire and the third kirschner wire form an included angle and are located in different planes. The fixing effect of the fibula far-end downward-moving single arm is good, and fixation can be conducted from multiple aspects.

Training aids for surgeons to simulate the repair or replacement of a knee joint include unitary pieces comprised of a material strong enough to withstand being put under tension without snapping, yet soft enough to be cut, filed, and / or drilled. An orthopaedic training device (100) is provided comprising a facsimile of a distal portion of a femur (200) and a facsimile of a proximal portion of tibia (200), wherein respective diaphysis portions (220, 320) and metaphysis portions (230, 330) of each facsimile are comprised of a first material having a first hardness, the femur epiphysis portion (240) is comprised of a second material having a second hardness, and the tibia epiphysis portion (340) is comprised of a third material having a third hardness, the first hardness being greater than the second hardness and the third hardness. In this way, the diaphysis portions and metaphysis portions may withstand tension, and the epiphysis portions may remain soft enough to be used in surgical procedures.

The utility model provides a kind of tumour type knee joint prosthesis, for reconstructing the bone defect after distal femur tumour resection of children, including femur prosthesis and tibia prosthesis, the top of femur prosthesis is used to connect with distal femur, the bottom of tibia prosthesis is used to connect with proximal tibia, the bottom of femur prosthesis and the top of tibia prosthesis are connected by pin shaft rotation, the front side of tibia prosthesis is provided with limiting portion, limiting portion is used to limit tibia prosthesis and femur prosthesis knee hyperextension.In the front side of limiting portion is provided with the concave groove of recession to the rear, the intersection of the top surface and the front side of limiting portion is provided with avoidance chamfer.So, when patient carries out knee joint flexion, limiting portion no longer occurs interference with the inner side of patella, avoid limiting portion to patella damage.

The invention discloses an intelligent matching and operation planning system for osteochondral defect repair, and relates to the technical field of orthopedic implant design, and the system comprises an image acquisition and preprocessing module which is used for obtaining high-resolution nuclear magnetic resonance image data of both knee joints of a patient; and the three-dimensional modeling module is used for carrying out segmentation and three-dimensional reconstruction on the nuclear magnetic resonance image data, generating a knee joint three-dimensional entity model comprising the proximal tibia, the proximal fibula, the distal femur and the surface cartilage of the proximal tibia, the proximal fibula, the distal femur and the surface cartilage of the proximal tibia, the proximal fibula and the distal femur. The bearing curved surface of the prosthesis can accurately reproduce the self-healthy articular surface curvature of a patient, so that good anatomical matching and biomechanical compatibility are formed with an opposite-side joint after the prosthesis is implanted. Meanwhile, the handle structure is intelligently generated according to the three-dimensional shape of the defect area, and initial stable fixation of the prosthesis in the bone is facilitated.

A method for treating an articular fracture of a tibia using a tibia plate with an extension arm, including: making an incision to expose the tibia; reducing the articular fracture of the tibia; contouring the tibia plate to fit the tibia; preliminarily fixing the tibia plate to the tibia; placing a screw partially into the tibia through a lateral elongated hole in the tibia plate; applying compression between a plate screw hole in the extension arm and an anterior surface of the tibia; and placing additional plate screws in the tibia through additional screw holes in the tibia plate.

Orthopedic instrument systems and components thereof for improving the accuracy of resection of the proximal tibia in a kinematic alignment total knee arthroplasty (“TKA”). Instruments in an exemplary system can include an adjustable double tibial stylus instrument comprising: a first wide stylus tip at a first distal end of a first stylus and a second wide stylus tip at a second distal end of the second stylus, and a first gap measurement instrument having a measurement end, wherein the measurement end comprises a first measurement end distal surface that is congruent with a first tip distal surface of the first wide stylus tip. The wide stylus tips may be fixed components of the adjustable double stylus instrument, or the wide stylus tips may be detachable.

A system for markerless registration and tracking is disclosed. The system includes an imaging sensor configured to capture both RGB images and depth maps of environment. The system can be configured to receive an RGB image and associated depth information from the imaging sensor, segment the RGB image, using a deep learning network, by classifying each pixel as belonging to one of the group of proximal tibia, distal femur, patella, or non-boney material of the knee, and determine a loss based on a comparison between the predicted segmentation mask and a ground-truth mask. The ground-truth mask may be generated based on the depth map captured by the imaging sensor.

The application discloses a cutting guide plate for a proximal tibia and a preparation method thereof, and belongs to the technical field of orthopedic cutting guide plates. The cutting guide plate comprises a positioning plate, the bottom surface of the positioning plate is attached to a tibial articular surface and lateral bone, a cutting groove is formed in the side surface of the positioning plate, the cutting groove is inclined backward by 3-5 degrees, an avoiding hole is formed in the top surface of the positioning plate, and at least two fixing holes are arranged on the positioning plate; and a positioning line is arranged on the upper end surface of the positioning plate, and the positioning line is used for pointing to the inner 1 / 3 of a tibial tuberosity. The cutting guide plate is used for tibial cutting surgery, effectively improves the cutting and prosthesis installation accuracy, shortens the operation time, reduces the operation complications, and helps the patient to quickly recover.

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.

The application relates to the technical field of implanting bone surgery, in particular to a proximal tibia anatomical bone defect pad block prosthesis which comprises a pad block prosthesis structure and a side plate, the pad block prosthesis structure comprises an anatomical bone defect pad block and a sleeve cage structure fixed at the bottom end of the anatomical bone defect pad block, and the side plate is arranged on the side of the anatomical bone defect pad block. Through the arrangement of the pad block prosthesis structure and the side plate, on the basis of minimal osteotomy of proximal tibia bone defect, the anatomical bone defect pad block and the anatomical prosthesis with sleeve cage structures on two sides are customized according to the internal bone defect condition, the normal bone joint surface can be reserved, the amount of osteotomy is reduced, the normal patellar ligament and tibial collateral ligament are reserved, the joint function is maximally maintained, the pad block prosthesis structure and the side plate can provide initial stability and provide a structural basis for long-term stability, and the hollow sleeve cage structures on the two sides can be implanted with bone, have a bone guiding effect and can promote the formation of new bone.

A method and apparatus for joint balance adjustment for joint replacement procedures is disclosed. An example of a knee balance adjustment fixture may include a tibial positioning guide and / or at least one balance adjustment assembly configured to be mounted on a tibial reference in a generally medial-lateral orientation at a generally anterior position relative to the knee. The balance adjustment assembly may include a vertical guide configured to be releasably mounted on the tibial positioning guide in a generally downward-upward orientation, at least one posteriorly extending paddle selectively movable vertically along the vertical guide, the paddle configured to selectively engage with the distal femur and / or proximal tibia, and / or at least one pin guide selectively movable vertically along the vertical guide, the at least one pin guide including at least one opening configured to receive at least one of a drill bit and a bone pin.

The present application relates to a kind of 3D printing proximal tibia tumor segment replacement microporous-scaffold composite prosthesis, the composite prosthesis includes proximal microporous section, scaffold section and microporous bone conduction section, proximal microporous section, scaffold section and microporous bone conduction section are provided with from top to bottom through channel for passing through the handle body of tibial plateau prosthesis and with the shape of handle body is matched;The upper end of proximal microporous section is matched with the shape of the platform body of tibial plateau prosthesis;Scaffold section is grid structure, and patellar tendon screw fixing seat is provided in the front end of scaffold section, and ligament fixing seat is provided in the inner side of scaffold section;The lower end of microporous bone conduction section is contacted with the osteotomy plane of patient's tibia, and the diameter of the channel of microporous bone conduction section is greater than the diameter of medullary cavity in osteotomy plane and less than the outer diameter of bone cortex.The composite prosthesis of the present application can change mechanical fixation into biological fixation, reduce the probability of long-term prosthesis failure, and the structure is stable, and light in weight.

The invention belongs to the field of medical instruments, and provides a tibia osteotomy guide plate and a design method thereof.The tibia osteotomy guide plate comprises a tibia osteotomy guide part, a tibia first attaching part and a tibia second attaching part, and the tibia osteotomy guide part is provided with a tibia osteotomy groove; the tibia first attaching part is connected with the tibia osteotomy guide part, and the tibia first attaching part is provided with a tibia first attaching face used for being attached to a tibia articular face; the second tibia attaching part is connected with the tibia osteotomy guiding part, the second tibia attaching part is provided with a second tibia attaching face used for being attached to the side face of the near end of the tibia, and the second tibia attaching part is provided with a tibia positioning hole; wherein a tibia side anti-skid structure is formed on the tibia first binding surface and / or the tibia second binding surface. The tibia osteotomy guide plate can be stably and accurately attached to the proximal end of the tibia. The tibia osteotomy guide plate is designed according to the preoperative planning scheme confirmed by the doctor through medical-worker interaction, and the design accuracy of the tibia osteotomy guide plate is improved.

Assemblies, systems, kits, and methods related to the positioning of patient-specific resection guides for use in orthopedic surgical procedures. Exemplary embodiments may be configured for use in the distal femur, proximal tibia, or other bones for other joints. Exemplary embodiments comprise an anteromedial flange extending from a body of the patient-specific resection guide locator between first and second positioning members.

The utility model relates to the technical field of medical instruments, and discloses a hockey rod-like steel plate which is used for fixing tibia and comprises an extension section, a turning section and a bending section, the turning section is of a curved structure with a corner, one end of the turning section is connected with the extension section, the extension section extends in the vertical direction, a fixing part is arranged on the extension section, and the bending section is of a curved structure with a corner. The steel plate is fixed on the tibia; the other end of the turning section is connected with the bending section, the bending section extends in a surrounding mode along the peripheral side of the tibia in the horizontal direction, the bending section is of an arc-shaped structure with a curved surface, and an adjusting part is arranged on the bending section so that the bending section can be attached to the tibia. The steel plate is attached to the anatomical structure of the inner side of the proximal tibia, and through the hockey rod-like design and the shaping characteristic, the dependence of an operation on an accurate body position is reduced, and the operation difficulty is reduced; the steel plate penetrates through the goose foot tendon to be placed, so that damage to the medial collateral ligament and the goose foot tendon is avoided, and the risk that the knee joint is unstable after operation is reduced.

The utility model discloses a medical inner bone fracture plate for avulsion fracture of a proximal tibia posterior cruciate ligament. The device comprises a straight part and a hook part, the straight part is an arc-shaped plate formed by cutting a tubular plate, the radian of the straight part is smaller than 90 degrees, and the straight part is bent with the radian adaptive to the shape of the rear wall of the upper end of the tibia; the joint of the straight part and the hook part is in arc transition; the bent hook part and the straight part are integrally arranged, the bent hook part is bent towards the inner arc surface of the straight part in an arc shape adaptive to the rear edge of the upper end of the tibia, the bent hook part comprises two claw parts, the tail ends of the two claw parts are sharp, the joint of the two claw parts is an arc transition surface, and the radian of the arc transition surface is 180-250 degrees; and a plurality of screw holes are formed in the straight part. According to the internal bone fracture plate, stress concentration can be reduced, a stable structure is formed, and the internal bone fracture plate can be rapidly and accurately positioned when placed.

The invention relates to the technical field of medical equipment, and discloses a static position occupying device for knee joint periprosthetic infection treatment, which comprises a thighbone position occupying component, a tibia position occupying component and a connecting component, a first articular surface is arranged on one side of the femur occupying component away from the femur; a second articular surface is arranged on the side, close to the proximal tibia end, of the tibia occupying assembly, and the second articular surface is movably connected with the first articular surface through a clamping part; the connecting assembly is arranged between the thighbone occupying assembly and the tibia occupying assembly, and the two ends of the connecting assembly are detachably connected with the thighbone occupying assembly and the tibia occupying assembly correspondingly, so that relative fixation and position adjustment between the thighbone occupying assembly and the tibia occupying assembly are achieved; medicine storage cavities are formed in the femur occupying assembly and the tibia occupying assembly. The spacer can be accurately matched with individual anatomy, and joint stability and tissue safety are guaranteed.