11 results about "Total knee arthroplasty" patented technology

An implant type or a process of implant fixation is automatically identified by processing surgical plan information. Further, bone mineral density information associated with a patient is determined by processing at least one image. The determined bone mineral density information and patient information representing at least demographics associated with the patient are processed, and a selection of a plurality of patients that previously underwent arthroplasty is made. Outcome information representing results of arthroplasty procedures is processed and a threshold is established representing a biomechanical tolerance. The bone mineral density information is processed to be determined associated with the patient is determined to be above or below the threshold.

A system for balancing a knee of a patient includes a force measurement device configured to measure forces between a femoral bone and a tibia bone as a force is applied to the knee and a computing system configured to determine a separation distance between a point or region associated with the femur and a point or region associated with tibia based on force information from the force measurement device. The force measurement device may include at least one paddle configured for placement between the femur and tibia and including at least one force sensing element for sensing forces associated with the femur or tibia. The computing system may be configured to normalize a measured force and identify the separation distance based on the normalized force, wherein the identified separation distance is substantially the same over a range of forces measured by the force measurement device.

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.

Robotic systems for orthopedic surgery are provided. The robotic systems may include at least first and second motors coupled to each other. An output shaft of one of the motors may be connectable to a surgical tool guide. An output shaft of another of the motors may be coupled to a portion of a ball and socket joint. A corresponding portion of the ball and socket joint may be coupled to a bone mount which may be attached to a bone to mount the first and second motors to bone for performing orthopedic surgical procedures.

A system including a knee ranging tool: including a base configured to locate on a resected proximal face of a tibia in a knee of a patient; defining a tibial reference surface configured to run against a femoral surface of an artificial femoral component, installed on a distal face of a femur of the patient, during articulation of the knee of patient; including a set of stages interposed between the base and the tibial reference surface, configured to locate the tibial reference surface relative to the base, and compliant to medial-lateral translation, anteroposterior translation, and transverse rotation; and configured to indicate a medial-lateral translation offset, an anteroposterior translation offset, and a transverse rotation offset corresponding to a position of the tibial reference surface, relative to the base, that yields elastic deformation of ligaments in the knee over a range of motion of the knee.

A method for predicting a type of surgery required for a patient comprises: receiving imaging data including at least one image acquired of a patient's anatomy; determining at least one parameter of the patient's anatomy based on the image data, the at least one parameter including at least one of a B-score and a C-score; receiving patient data regarding the patient; generating, based at least in part on the at least one parameter and the patient data, a predicted procedure for the patient; and outputting the predicted procedure for display within a graphical user interface (GUI).

This application relates to a simulation training method for total knee arthroplasty prosthesis positioning and gap balancing, belonging to the field of simulation training technology. To provide a standardized and repeatable workflow for individualized planning of total knee arthroplasty surgery, this application provides a simulation training method for total knee arthroplasty prosthesis positioning and gap balancing. This method includes determining the amount of osteotomy on the posteromedial femoral condyle based on the thickness of the femoral prosthesis's posterior condyle; determining the rotational alignment parameters of the femoral prosthesis based on a femoral trochlea model to obtain a patellar trajectory that meets the requirements; determining the placement of the tibial prosthesis on the tibia with the knee joint model in a flexed state; and determining the placement of the femoral prosthesis on the femur with the knee joint model in an extended state. This method enables individualized planning of total knee arthroplasty surgery, precise prosthesis positioning, flexion-extension gap balancing, and standardized training of the surgical procedure, improving surgical accuracy and postoperative outcomes.

The utility model relates to a kind of knee joint soft tissue tension gap measurers, belong to total knee arthroplasty instrument technical field.Fixed detection plate lower part is connected with the inside of hand-held end body fixedly, tension and gap measuring device one and tension and gap measuring device two lower part are respectively located in hand-held end body, and bottom is fixedly connected with the bottom of fixed detection plate, movable detection plate one and movable detection plate two are respectively connected with the middle part of tension and gap measuring device one and tension and gap measuring device two.Advantage is novel structure, realize the simultaneous measurement to the gap distance of two sides inside and outside of knee joint and soft tissue tension, intraoperative operation is simple, it is convenient to compare the difference of inside and outside gap, and it is not easy to be affected by external influence and cause detection failure or surgical accident, can be sterilized and reused.

This invention discloses a system and method for predicting the risk of periprosthetic infection after knee arthroplasty, belonging to the field of medical data analysis and processing technology. The system includes: an image acquisition interference detection module, an initial infection area determination module, an infection risk area correction module, and a risk prediction result output module. This invention quantitatively determines the interference of metal artifacts in image acquisition by combining relevant image parameters, ensuring the authenticity and reliability of the input images. Based on this, the initial infection area determination module initially identifies the infection risk area around the prosthesis, and the infection risk area correction module further corrects the initially determined infection area, outputting a more accurate corrected infection risk area. Finally, the risk prediction result output module outputs the final infection risk prediction result based on the corrected dataset. Through the synergistic effect of the above modules, the accuracy of periprosthetic infection risk prediction after knee arthroplasty is significantly improved.

The embodiment of the application is suitable for the technical field of computer-aided medical treatment, and provides an orthopedic surgery robot system and an intraoperative planning method for orthopedic surgery. The system is connected with a pressure sensor and comprises a data acquisition module, a data processing module and a display feedback module. The data acquisition module is used for acquiring flexion and extension data of a patient's leg. The data processing module is used for receiving pressure data of the patient's knee joint collected by the pressure sensor, and generating intraoperative planning information based on the flexion and extension data and the pressure data. The display feedback module is used for displaying the intraoperative planning information and guiding a surgeon to perform total knee arthroplasty on the patient. By using the above system, dynamic, automatic and accurate adjustment of intraoperative surgery planning can be realized, the dependence on the personal experience of the surgeon is reduced, and the effect of soft tissue balance and the success rate of surgery are improved.

This invention discloses a method, targets, and applications for the diagnosis and treatment of hemophilic arthritis. The method includes: obtaining cartilage and synovial membrane samples from patients with hemophilic arthritis undergoing total knee arthroplasty; performing single-cell RNA sequencing, single-cell ATAC sequencing, and spatial transcriptomics analysis to determine the main cell types and key cell subpopulations constituting the microenvironment of hemophilic arthritis; identifying the molecular characteristics and differentiation processes of chondrocyte and synovial fibroblast subpopulations; measuring intercellular interactions in the knee joint microenvironment of the samples; and identifying specific regulatory transcription factors in hemophilic arthritis through paired epigenetic analysis to identify diagnostic and therapeutic targets for hemophilic arthritis. This method integrates single-cell multi-omics analysis to analyze the cellular characteristics of synovial and cartilage tissues and their interactions in the epigenetic pathogenic mechanism, identifying potential therapeutic targets.