8 results about "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.

The subtalar joint prosthesis comprises a talus assembly, a gasket and a calcaneus assembly, and the talus assembly and the calcaneus assembly are connected through the gasket to form a joint structure; by means of the split structure of the talus assembly, the gasket and the calcaneus assembly, all the assemblies are detachably clamped, step-by-step implantation and assembly in the operation process are facilitated, and therefore the adaptability of the prosthesis under different anatomical conditions is improved. The gasket is arranged between the talus assembly and the calcaneus assembly, a relative motion interface is formed between the talus assembly and the calcaneus assembly, the gasket is made of the low-friction material, direct friction between metal assemblies can be effectively reduced, abrasion is reduced, and the joint movement performance is improved. By means of the structural design, dependence of prosthesis implantation on accurate matching of bone surfaces is reduced, surgical operation is simplified, and meanwhile a feasible solution is provided for rebuilding after joint fusion operation.

Disclosed are devices, systems and methods for inserts for sacroiliac joint arthroplasty, which can include the employment of a longitudinal bone screw and associated threaded cylindrical sleeve, received on a proximal end of the bone screw, with a collet, nut or other securement feature holding the sleeve onto the screw. The sleeve can selectively articulate and / or be immobilized relative to the bone screw, with the system allowing for, at a surgeon's option, motion preservation between bone surfaces in some surgical applications while being utilized as an immobilizing and / or fusion construct between bone surfaces during other surgical applications.

Methods and devices are disclosed for soft tissue balancing of a knee joint during an arthroplasty procedure that include balancing the knee joint at or near mid-flexion, while maintaining the rotational position of the femur with respect to the tibia that replicates proper kinematic placement of these bones. Also disclosed are methods and devices for soft tissue balancing of a knee joint during an arthroplasty procedure that include balancing the knee joint at or near mid-flexion using one or more expansion devices that are not actively requiring monitoring and / or recording of forces applied by the bodily tissues, but instead uses incremental changes in actual length / height of the expansion device to determine whether the joint is properly tensioned or too lax.

The application provides an assisted arthroplasty robot and an assisted arthroplasty robot system, the assisted arthroplasty robot comprising a base, a fixing assembly and a motion mechanism; the fixing assembly is arranged on the base and is used for connecting a fixing member; the base is used for being arranged on a target object through the fixing member; the motion mechanism has multiple degrees of freedom, one side of the motion mechanism is arranged on the base, and the other side is used for being connected with an instrument; wherein the target object moves to drive the base and the motion mechanism arranged on the base to move together, so that the relative position between the instrument on one side of the motion mechanism and the target object does not move. In this way, since the base is arranged on the target object through the fixing member, the assisted arthroplasty robot can be directly fixed with a lesion area of a patient, so that the assisted arthroplasty robot can change synchronously with the adjustment of the body position of the patient, the development and design of a separate follow-up program are avoided, and the assisted arthroplasty robot system is simpler.

The techniques described herein relate to a tibial prosthesis for a knee arthroplasty optionally including a baseplate and a tibial keel. The baseplate optionally including: a distal surface sized and shaped to substantially cover a proximal resected surface of a tibia; a proximal surface opposite the distal surface, the proximal surface having a lateral compartment and a medial compartment opposite the lateral compartment; a periphery extending between the distal surface and the proximal surface; a first layer of porous material forming at least a majority of the distal surface and extending to the periphery; and a second layer of non-porous or relatively less porous material having a plurality of reference features extending through the first layer, wherein the plurality of reference features form at least a portion of the distal surface; and a tibial keel extending distally from the distal surface to define a longitudinal tibial keel axis. 20 24 27 84 88 17 D ec 2 02 4 2 0 2 4 2 7 8 4 8 8 1 7 D e c 2 0 2 4

The application discloses a wound dressing used after knee arthroplasty, which comprises a dressing base, the dressing base is a long strip-shaped sheet which is bonded with the skin, and a plurality of openings are formed on the long edges of the two sides of the dressing base; an ice compress capsule is arranged on the bottom end face of the dressing base, the ice compress capsule is connected with a liquid inlet pipe and a liquid outlet pipe, and plugs are arranged on the pipe openings of the liquid inlet pipe and the liquid outlet pipe; and a liquid absorption layer is bonded on the lower surface of the ice compress capsule and is used for absorbing bleeding and exudation of the incision. When the knee joint is flexed and stretched, the skin will be stretched and contracted, the openings can disperse the longitudinal tension, wrinkles or edge lifting in the middle of the dressing base caused by stress concentration can be avoided, and the fitting stability of the dressing on the dynamic joint is remarkably improved. Moreover, the ice compress function and the wound care function are integrated, the ice compress bag does not need to be fixed by using a high-frequency additional bandage, and the nursing process is simplified.