摘要:
A total joint instrument set according to an exemplary aspect of the present disclosure includes, among other things, a guide assembly that orients a cut in a first bone and a linkage guide that orients a cut in a second bone. A positioning of the linkage guide is mechanically linked to at least a portion of the guide assembly.
摘要:
Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.
摘要:
A method and system for designing a patient-specific orthopaedic surgical instrument includes coupling a knee sleeve to a leg of the patient. The knee sleeve includes sensors configured to generate sensor data indicate of the position of the respective sensor. The method also include determining angulation data indicative of the angulation of the knee based on the sensor data. The angulation data may be indicative of, for example, the ligament laxity of the knee. The method may also include generating a medical image(s) of the knee. The design of the patient-specific orthopaedic surgical instrument is determined based on the angulation data and the medical image(s).
摘要:
An orthopedic device for cutting or resurfacing an outer bone surface of a bone of a patient includes first and second guides. Each guide has a patient-specific surface preoperatively configured as a negative surface of a portion of the outer bone surface of the bone and a plurality of elongated slots. The elongated slots of the second guide are offset relative to the elongated slots of the first guide and configured for guiding a tool to resurface the outer bone surface.
摘要:
According to one aspect of the present invention, a computer assisted orthopaedic surgery system for performing joint replacement or resurfacing surgeries includes a computer that contains software that is adapted to permit an operator of the system to physically evaluate post-operative laxity and stiffness of a joint based on planned implant placement, prior to all cuts being made for at least one side of the joint to accommodate the implant and before components of the implant are installed in the joint, wherein the planned implant placement is measured in terms of a position of at least one virtual implant.
摘要:
A combination of a first assembly for guiding resection of a femur and tibia of a knee joint and a second assembly including femoral and tibial knee components. The combination of the first assembly and the second assembly provides optimal placement and positioning of the femoral and tibial knee components to achieve near-normal knee kinematics and tension. The preparation for and placement of the prosthetic knee components provides medial-pivoting kinematics mimicking that of the natural knee thereby promoting improved outcome for the patient.
摘要:
An assembly for guiding resection of a femur and tibia of a knee joint in preparation for installing a femoral and tibial knee components. For example, the assembly can include tibial and femoral IM rods to which are connected through a tensioning bolt that allows controlled adjustment of the distraction of the tibia and femur during cut positioning in a range of flexion angles. Also, the assembly is usable with relatively small, noninvasive approaches to the knee joint by way of relatively narrow, low profile components that attach to tibial and femoral IM rods. Further, the assembly includes several quick-release components to allow fast assembly and disassembly in a surgical setting. Each of these aspects, along with the ability of the assembly to accurately guide initial reference cuts to the tibia and femur, promotes an improved outcome for the patient.
摘要:
A stylus assembly (10) adapted to align a surgical tool with a bone, the stylus assembly (10) comprising: a mounting element (12,18); a tool guide (50) adjustably mounted relative to the mounting element (12,18); a stylus (16) adjustably mounted relative to the mounting element (12,18) and having a curved portion for engagement with a predetermined part of the bone; and a lockable retaining member (14) for simultaneously locking the surgical tool guide (50) and the stylus (16) to the mounting element (12,18).
摘要:
A system for use in a total knee arthroplasty procedure can include a first cutting guide, an alignment guide and a femoral prosthetic implant. The first cutting guide can include at least one planar guide surface adapted to guide a cutting tool to cut femur. The alignment guide can contact the femur and provide for markings to be made in the femur that dictate a location and orientation of the first cutting guide. The implant is adapted to be implanted on the resected femur. The implant can have an inwardly protruding structure to provide medial-lateral fixation stability, and can have an anterior fixation path that diverges proximally away from a long axis of the femur and a posterior fixation path that converges proximally towards the long axis such that the posterior fixation path and anterior fixation path converge toward one another proximally of a distal contact surface.
摘要:
A method for making a surgical cutting guide and the guide made by this method. The method includes obtaining a number of cross sectional images of a patient joint taken at a defined interval. On each image a patient contour is imaged. These patient surface contours are used to generate a pattern of parallel ridges on a surgical cutting guide.