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Acetabular prostheses
The first step in achieving a functional acetabular prosthesis is to understand the mechanisms that lead to its failure. This type of prosthesis has many different features. The femoral head, for example, cannot be replaced if the femur is displaced. In addition, patients who have failed the standard acetabular prosthesis may have complications such as bone erosion, infection, or infection-related pain.
To solve these problems, engineers developed an acetabular prosthesis that allows patients to walk and move. This advanced technology utilizes 3D printing and Siemens NX software to design the acetabular prosthesis. The software automatically calculates the circumference length and diameter of the acetabulum. The center of rotation of the femoral head operation side is centered on the horizontal diameter of the apex.
The computer program Siemens NX was used to design the acetabular prosthesis using 3D scans. Using this software, the surgeon could automatically generate the diameter and circumference of the acetabulum. The vertical diameter intersected with the horizontal diameter at the center of the O was the rotation center of the femoral head operation side. The resulting model was then exported as an STL file.
The ASTM F2582 test method was used to examine the acetabular prosthesis. During the in-vivo tests, the femoral and acetabular prosthesis was subjected to impingement. While this test method does not recreate the actual conditions in which a patient would experience pain and discomfort, it is an effective method of testing the prosthesis' performance. Investigators can deviate from this test method to study other factors that affect the prosthesis's failure.
The acetabular prosthesis is made of three main parts: the cup, the implant, and the femoral neck. The cup is held in place temporarily by a single screw. The prosthetic implant consists of three components: the femoral neck, the acetabular cup, and the prosthetic implant. The cups are the most common and effective of all. In addition, the cups are made of biocompatible materials.
The Continuum Acetabular System is a hybrid of state-of-the-art implants and innovative fixation concepts. This implant system uses state-of-the-art materials and is compatible with a variety of femoral systems. The UHMWPE acetabular component is a hybrid of vitamin E polyethylene and metal. In the case of a labrador retriever, a custom acetabular prosthesis has a porous backside for biological fixation.
A good-quality acetabular prosthesis has good initial stability. Too much micromotion prevents osseointegration at the bone-implant interface. Furthermore, excessive micromotion leads to bone absorption and fibrous tissue growth, which may lead to loosening of the prosthetic. Therefore, it is important to ensure that the acetabular prosthesis has adequate contact area with the host bone. At least 50% of its surface area should be in contact with the host bone, to promote ingrowth and mechanical support.