170 results about "Tibial bone" patented technology

An orthopaedic system includes a tibial insert and a femoral component configured to articulate on the tibial insert. The tibial insert includes an articular surface, and the femoral component includes a femoral articular surface having decreasing radii of curvature posteriorly. The articular surface of the tibial insert includes an increased anterior lip to improve stability of the femoral component.

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.

The invention provides a tibial prosthesis which comprises a tibial platform provided with a containing groove and a communicating groove, the containing groove is communicated with the upper surface of the tibial platform, and the communicating groove is communicated with the groove bottom wall of the containing groove and the lower surface of the tibial platform; the gasket structure is arranged in the containing groove in a floating mode in the vertical direction; the bone growth body is connected to the lower portion of the gasket structure and located in the communicating groove, and the gasket structure can drive the bone growth body to penetrate out of the tibial plateau downwards when floating in the vertical direction. According to the technical scheme, the problem that in the prior art, the time needed for combining the sclerotin and the prosthesis of a patient is long can be effectively solved.

An orthopaedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A number of methods for using the surgical instruments to prepare the bones is also disclosed.

A tibia prosthesis comprises a tibia gasket, a platform support and a pushing part. A first fixing block connected with the femoral condyle is arranged on the upper portion of the gasket, a first opening is formed in the middle of the gasket, and second fixing blocks are arranged in three surrounding second openings. A third opening is formed in the first groove in the side face of the gasket, and a first limiting block with a fifth opening is arranged in a fourth opening in the bottom. A spring in the third opening pushes the second limiting block to be clamped into the fifth opening. The platform support is provided with a sixth opening and a second groove, a fourth limiting block capable of being opened is arranged in a seventh opening in the upper portion, and a fifth limiting block is hinged into the second groove. A pushing part is arranged in a lower shell of the platform support and comprises a hexagon screw and a fixing ring, a ninth opening is formed in the screw, and the fixing ring is connected with the rotating part through a ratchet wheel. And during rotation, the rotating part pushes the first limiting block to enter the seventh opening, the fourth limiting block is retracted and limited after being opened, and meanwhile, the second limiting block is clamped into the fifth opening to be fixed. And the second fixing block is clamped into the ninth opening to connect the screw and the gasket. And when the rotating part enters the second groove, the fifth limiting block is pushed to be clamped into the second groove, and overall fixing is completed.

The invention provides a distraction device and distraction equipment suitable for wedge high tibial osteotomy, and relates to the technical field of medical surgical instruments, the distraction device comprises a support, a first knife group, a second knife group and a first actuating part; the first cutter set is arranged on the support and protrudes out of the support in the first direction. The second cutter set is arranged on the support and protrudes out of the support in the second direction forming a first included angle with the first direction. And the first actuating part is configured to drive the bracket to rotate around the fixed shaft of the rotating shaft, so that the first knife group or the second knife group faces and extends into the bone seam. Wherein the thickness of the first knife group is configured to be smaller than that of the second knife group.

Bone and joint surface reconstruction methods are disclosed for the therapeutic amelioration of joint defects caused by various conditions, injuries, and diseases to help eliminate or reduce pain and return the joint to its proper bio-mechanical function without the need to replace fully or partially the anatomical joint. The joint may specifically include mammalian joints such as the femorotibial joint, for example. The methods disclosed herein leverage the significant role the subchondral bone plays in the health status of the afflicted joint.

The invention relates to the technical field of joint prostheses, in particular to an interchangeable joint prosthesis which comprises a thighbone prosthesis, a tibia platform and a tibia liner. The femoral prosthesis comprises a half-shell prosthesis, a first stand column, a second stand column and a bone trabecula structure. The first stand column and the second stand column are fixedly arranged on the inner wall of the half-shell prosthesis. A dismounting table is arranged on the surface of the tibia platform, a clamping groove matched with the tibia liner is formed in the surface of the tibia platform, a press-fit edge matched with the clamping groove is fixedly arranged on the surface of the tibia liner, and the tibia liner is used for supporting a thighbone prosthesis to move; a fixing wing and a fixing stand column are arranged on the surface of the other side of the tibial plateau. By arranging the thighbone prosthesis, the tibia platform and the tibia liner, the size of the joint prosthesis can be freely changed in the actual operation process, operation prosthesis selection can be conveniently adjusted in the operation, finally, the joint prosthesis is used for biological fixation, and the long-term stability of the prosthesis after implantation is guaranteed.

The invention provides an individualized tibia defect repairing type knee joint prosthesis, and belongs to the technical field of orthopedic implants. The device is formed by assembling a femoral condyle, a femoral bone marrow needle, a plateau pad, a tibia plateau, a restoration body and a tibia bone marrow needle. Wherein the tibia platform and the restoration body are matched through metal-metal threads and are assisted by bone cement to achieve anti-rotation locking, the restoration body adopts a 3D printing individualized bone trabecula structure and is compounded with an HA coating to promote bone ingrowth, the tibia bone marrow needle and the platform are connected through a standard taper connector, inventory and individualization compatibility is achieved, and the bone marrow needle and the platform are connected through a standard taper connector. The defects that an existing prosthesis is large in bone mass loss, unattractive in reconstruction, free of bone ingrowth function, high in processing cost and the like are overcome, and the postoperative function of a tibia defect patient and the long-term stability of the prosthesis can be remarkably improved.

An orthopaedic system includes a tibial insert and a femoral component configured to articulate on the tibial insert. The tibial insert includes a pair of articular surfaces spaced apart by a post. The femoral component includes a pair of femoral condyles spaced apart by a notch in which a cam is located. During flexion, the cam of the femoral component is configured to contact the post of the tibial insert. The dwell point of the medial articular surface of the tibial insert is located, relative to the contact point between the post and tibial insert, to improve stability of the femoral component.

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.

Assemblies, systems, kits, and methods related to the positioning of the distal femoral resection guide anteromedially on an exposed condyle of the distal femur. Assemblies, systems, kits, and methods related to the positioning of the proximal tibial resection guide anteromedially on an exposed proximal tibia.

The invention pertains to a bone plate (10) designed for tibial Osteotomy, offering enhanced correction capabilities for genu varus deformity of the knee joint. The bone plate comprises an upper portion (12), a middle portion (14), and a lower portion (16), each equipped with a plurality of holes for secure attachment to the tibia at various locations. The middle portion (14) is pivotal in achieving correction at the osteotomy site, utilizing blocks (22) with threaded holes for fixation via locking screws (24) to achieve a valgus overcorrection of 2 to 6 degrees. The bone plate features three locking holes (18) in the upper portion and locking holes (20) with diameters less than 5 mm in the middle portion.

1. The name of the design product: tibial positioning adjustment device kit. 2. The use of the design product: medical equipment, used in conjunction with a sensor module to cut bone during surgery, with the position of the cut bone being adjustable. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: reference drawing in use. 5. Other circumstances that need to be explained: component 1 of the design product is a tibial adjustable main support, component 2 is a positioning block; used and sold as a set.

The invention relates to the technical field of orthopedic surgery medical instruments, and discloses a surgical tibia reduction support which comprises a bottom connecting plate, the upper portion of the bottom connecting plate is movably sleeved with a first telescopic rod, the end of the first telescopic rod is fixedly connected with a connecting plate, and the upper portion of the connecting plate is fixedly connected with a second telescopic rod. According to the tibia reduction support for the operation, a first round bone needle and a second round bone needle are installed in a bone, a second inclined rod and a first telescopic rod are sequentially connected to the outer portion of the first round bone needle and the outer portion of the second round bone needle in a sleeving mode, the first inclined rod and the first telescopic rod are installed on the two sides of a leg, and meanwhile a telescopic adjusting plate is rotated to adjust the angle of equipment; the first telescopic rod and the second telescopic rod installed at the two ends of the thigh are synchronously rotated, the length of the first telescopic rod and the length of the second telescopic rod are adjusted and controlled, the first telescopic rod and the second telescopic rod can drive the fracture part to be stretched, and therefore the staggered bone is driven to be stretched and positioned, and the bone positioning accuracy is improved.

The invention relates to the technical field of medical instruments, in particular to an internal fixing structure for posterior cruciate ligament tibia dead center fractures, which comprises a tail plate, a plurality of movable screw holes are formed in the front side of the tail plate in a penetrating manner, a plurality of locking screw holes are formed in the rear side of the tail plate in a penetrating manner, and two head plates are fixedly mounted at the front end of the tail plate. A notch is formed between the two head plates, a plurality of fixing screw holes are formed in the surfaces of the head plates in a penetrating mode, sliding grooves are formed in the positions, close to the edges, of the left side and the right side of each head plate, and deformable needles formed in a bent mode are arranged in the sliding grooves. By dissecting the attached head and tail plate structures, adopting an encircling type fixing mode and adopting the combined design of the adjustable deformable needles and multiple types of screw holes, multi-angle, dispersive and pressurized stable fixing of the tibia dead center fracture blocks is achieved, and ligament protection and operation flexibility are taken into account while the fixing strength and stability are improved.

A tibial plateau posterior lateral fixing device comprises a fixing steel plate and screws. The fixing steel plate comprises a C-shaped steel plate body, a binding face which is formed on the inner side of the C-shaped steel plate body and used for being attached to sclerotin under a tibial plateau articular surface, one or more fixing screw holes formed in the front end of the C-shaped steel plate body, and positioning holes which are formed in the rear end of the C-shaped steel plate body and are opposite to the one or more fixing screw holes. The screws are matched with the one or more fixing screw holes, and the tail ends of the screws can be clamped in the positioning holes; according to the fixing device limited by the application, the injury risk of nerve, blood vessel and tendon caused by a complicated anatomical structure of a conventional rear side approach is avoided; the C-shaped steel plate body can penetrate through a gap between an outer side collateral ligament and a tibial condyle above a fibula head and wrap the rear outer side of a tibial plateau, so that extrusion supporting of a blind area bone block on the rear outer side is achieved; and the two screws are clamped into the rear positioning holes to form a frame structure, so that the fixing device has good mechanical stability.

The invention discloses a fitting type adjustable gasket device for wedge-shaped high tibia osteotomy with an inner opening. The fitting type adjustable gasket device comprises an upper cover, a floating cover, a double-side different-curve cam, a worm gear-worm transmission pair and a base, the worm gear is driven by rotating the worm, and then the double-side different-curve cams are driven to rotate synchronously. The double-side different-curve cam is unique in design, and the curved surfaces of the cams on the two sides of the double-side different-curve cam have specific curvature radius difference. In the rotation process of the cam, the curvature radius difference is utilized to accurately drive the floating cover to stably lift in the vertical direction, and meanwhile, the floating cover can controllably rotate around a coronal shaft. The combined movement mechanism enables the device to accurately generate the required coronal plane angle beta at one time in the operation. By means of the design, accurate adjustment of the angle is achieved, more importantly, large-area and uniform face-face contact can be effectively promoted to be formed between the osteotomy face and the floating cover, and therefore the supporting stability is remarkably improved, the risk of bone face collapse caused by local stress concentration is thoroughly eliminated, and reliable structural support is provided for postoperative recovery.

The application relates to the technical field of orthopedic surgery navigation, and discloses a high-position tibial osteotomy navigation method, a system and a storage medium, and a communication method which comprises the following steps: generating a 3D bone model of a lower limb of a patient based on medical images and performing preoperative osteotomy planning; performing visual positioning system detection and spatial calibration of a surgical instrument; installing an optical marker array, collecting actual bone point cloud data, and realizing alignment of the model and the bone through a registration algorithm; in-surgery real-time calculation and display of deviation of an operation track and planning parameters; post-surgery reconstruction of a lower limb force line, and comparison and evaluation with preoperative planning and in-surgery navigation records. The system comprises a hardware execution unit and preoperative planning, calibration verification, in-surgery registration, real-time navigation and post-surgery evaluation modules. The application realizes full-process integration of preoperative accurate planning, in-surgery real-time closed-loop navigation and post-surgery quantitative evaluation, and significantly improves the precision, repeatability and predictability of clinical effects of surgery.

A tibial prosthesis comprises a tibial pad, a platform holder and a pushing part. The upper part of the pad has a first fixing block connected with femoral condyle, the middle part has a first opening, and the periphery has three second openings with second fixing blocks. The first recess has a third opening, and the bottom has a fourth opening with a first limiting block with a fifth opening. The spring in the third opening pushes the second limiting block to be clamped in the fifth opening. The platform holder has a sixth opening and a second recess, the upper part has a seventh opening with a fourth limiting block that can be expanded, and the second recess has a fifth limiting block that is hinged. The pushing part is set in the lower part of the platform holder, which comprises a hexagonal screw and a fixing ring, the screw has a ninth opening, and the fixing ring is connected with the rotating part through a ratchet. When rotating, the rotating part pushes the first limiting block into the seventh opening, expands the fourth limiting block, and then shrinks the limiting block, while the second limiting block is clamped in the fifth opening to be fixed. The second fixing block is clamped in the ninth opening to connect the screw with the pad. When the rotating part enters the second recess, it pushes the fifth limiting block to be clamped in the recess, and the overall fixation is completed.

Disclosed herein is an angled wall femoral component (500) of a cam-post knee arthroplasty system for posterior cruciate ligament (PCL) replacement total knee arthroplasty (TKA) or revision TKA (rTKA) procedures, such as cruciate ligament (CS), bilateral cruciate ligament (BCS), or posterior stabilization (PS) procedures. The angled wall femoral component may include a femoral box (502) configured to receive a tibial post (110) of a corresponding tibial component (100). The anterior wall (508) of the femoral box is angled anteriorly and may include an anterior cam (561). The anterior wall is angled anteriorly to allow clearance between the anterior side of the tibial post and the anterior wall, while allowing a movable engagement between the tibial post and the anterior cam during knee flexion and extension, to which the femoral component is implanted.

The present disclosure discloses a tibial plateau prosthesis with trabeculae containing zirconium-niobium alloy on oxidation layer and a preparation method thereof. The preparation method uses zirconium niobium alloy powder as raw material, conducting a 3D printing for one-piece molding to obtain an intermediate product of the tibial plateau, performing hot isostatic pressing and cryogenic oxidation to obtain the tibial plateau prosthesis comprising a proximal trabecular layer and a distal trabecular layer; the pore size and porosity of the proximal trabecular layer are evenly arranged, and the distal trabecular layer are partitioned; the topological structure of the trabeculae of the tibial plateau prosthesis is gradiently distributed from three dimensions; the micro-strain in the 64%-72% region of the finite element model of the tibial plateau bone tissue is between the minimum effective strain threshold and the supraphysiological strain threshold, which increases the mechanical adaptation of the prosthesis.

This invention relates to the field of artificial joint prosthesis technology, and discloses an anatomical femoral condyle knee joint prosthesis that does not preserve the cruciate ligament. The prosthesis includes a femoral condyle, a tibial plateau pad, and a tibial plateau support. The femoral condyle comprises a medial condyle and a lateral condyle. The medial and lateral condyles, in lateral view, respectively form medial condyle curve contours and lateral condyle curve contours. The medial condyle curve contour is located lateral to the lateral condyle curve contour, and the movement trajectory length of the medial condyle curve contour is 15%-25% longer than that of the lateral condyle curve contour. The tibial plateau pad has medial condyle curved grooves and lateral condyle curved grooves that respectively conform to the medial and lateral condyles. The slope of the medial condyle curved groove is greater than that of the lateral condyle curved groove. This invention provides an anatomical femoral condyle knee joint prosthesis that does not preserve the cruciate ligament, solving the problem of poor compatibility between existing prostheses and surrounding tissues after implantation.

Tibial plateau leveling osteotomy (TPLO) bone plates for use in four-legged animals including canines and felines are disclosed, with the bone plates having one or more suture holes configured for suturing muscle such as the pes anserinus muscle group to the TPLO bone plate. The one or more suture holes may be positioned on a leading edge of the bone plate and shaped so that the tails of a suture engaged with the suture hole are directed medially from the underlying fixed bone.

An osteotomy guide to improve accuracy and efficiency of tibial plateau leveling osteotomy (TPLO) procedure. The guide comprises a concave shaped body with two ends on the opposite sides of the body wherein both ends are flushed, or one end is flushed and the other end is extended to form a flare. The flare also comprises a first end which may be extended from the first end of the guide. The guide also comprises a tibial plateau facing inner surface and an outer surface opposite the inner surface. The inner surface has a notch or groove or notches or grooves, which can be used as a landmark for tibial rotation. Further, the area enclosed by the two ends and inner and outer surfaces has plurality of orifices or fixation holes that are used for placing, securing and inserting mechanisms to secure the guide. The guide is durable, reusable or single-use and available in different sizes.

The reduction forceps for treating the rotational dislocation type tibial plateau fracture comprise a first forceps leg and a second forceps leg which are oppositely arranged, finger rings are integrated at the near ends of the first forceps leg and the second forceps leg, and a first forceps shoulder and a second forceps shoulder are integrated at the far ends of the first forceps leg and the second forceps leg respectively. A movable hole for the first forceps shoulder to rotate penetrates through the second forceps shoulder, the first forceps shoulder penetrates through the second forceps shoulder through the movable hole, a short shaft is fixed to the first forceps shoulder, and the second forceps shoulder rotates around the short shaft. When one clamp arm rotates to contact with the rotary dislocation tibial plateau, the other clamp arm rotates to contact with the rotary dislocation tibial plateau, at the moment, the heights of the ends of the two clamp arms are inconsistent, but when the two clamp arms are close to each other for resetting, the pressure direction of the ends of the two clamp arms is perpendicular to the resetting direction of the rotary dislocation tibial plateau, and the resetting stability is improved.

The present invention relates to a tibial liner. The tibial liner includes a medial articular surface and a lateral articular surface. The cross-sectional line formed by the intersection of the medial articular surface and a first sagittal plane includes a first arc, a first straight line segment, and a second arc connected in sequence. The radius of curvature of the first arc is greater than or equal to the radius of curvature of the second arc. The cross-sectional line formed by the intersection of the lateral articular surface and the second sagittal plane includes a fourth arc, a second straight line segment, and a fifth arc connected in sequence. The radius of curvature of the fourth arc is greater than or equal to the radius of curvature of the fifth arc. The tibial liner has good stability.

Graft for a bone defect, in particular a tibial head graft for a knee-joint endoprosthesis. It comprises a sleeve-like inner body (2) for implantation at one end of a long bone (99). An outer face of the inner body (2) is designed as a bone contact face (20) for bearing on the surrounding bone margin (97). According to the invention, an outer shell piece (3) is provided which, as a bone replacement piece, is doubled onto the outside of the inner body (2) for filling a defect at the cortical bone margin (97) and is not dimensioned peripherally, such that, in the circumferential direction, it covers only a part of the outer circumference of the inner body (2). The doubled outer shell piece (3) forms a filler piece for a bone defect (bone window 96) at the bone end. Closure of the bone window (96) is achieved, and unwanted contact between the graft and surrounding soft-tissue parts is avoided. Moreover, the graft is thus also supported in the region of the bone window (96). Parts of the bone margin (97) that are still present can thus remain intact, allowing the greatest possible preservation of naturally present bone substance.

An orthopaedic surgical instrument system includes a sensor adapter and multiple surgical instruments. The sensor adapter includes a housing with a force sensor positioned within the housing and a sensor contact configured to transfer force to the force sensor extending from the housing. Each surgical instrument includes a sensor connector configured to receive the sensor adapter at a predetermined location relative to the surgical instrument. Each sensor adapter further includes a registering feature to engage an anatomical feature of a patient or another surgical instrument. The surgical instruments may include a shim that may be attached to a gap assessment tool or a tibial insert trial. Methods associated with the surgical instrument system are also disclosed.

An orthopaedic surgical instrument system includes a sensor adapter and multiple surgical instruments. The sensor adapter includes a housing with a force sensor positioned within the housing and a sensor contact configured to transfer force to the force sensor extending from the housing. Each surgical instrument includes a sensor connector configured to receive the sensor adapter at a predetermined location relative to the surgical instrument. Each sensor adapter further includes a registering feature to engage an anatomical feature of a patient or another surgical instrument. The surgical instruments may include a shim that may be attached to a gap assessment tool or a tibial insert trial. Methods associated with the surgical instrument system are also disclosed.