Revision acetabular prosthesis

cemented

ip joint endoprosthesis are artificial hip joints that are intended to replace a missing or damaged hip joint. The endoprosthesis helps to recreate the anatomy of a hip joint and to restore its functions. Hip joint endoprosthesis consists of the following main components: a femoral stem, a liner and an acetabular component. These components may be standard or patient-specific. In cases of severe conditions (for instance, large bone defects, severe deformation, pelvic discontinuity or complications related to the existing implants), a patient-specific implant is recommended to be used. Patient-specific hip joint implants and patient-specific surgical guides are designed on a patient’s pelvic-femoral anatomical model recreated from computed tomography (CT) images. Unlike standard modular implants used to treat severe clinical conditions, patient-specific hip implants are designed as a single device with anatomically adapted surfaces, which not only eliminates the risk of instability, adapts the implant to the bone rather than the bone to the implant (during surgery, there is no need to shape the bone in order to adapt it tothe implant or use bone cement together with metal acetabular meshes and augments to fill the bone defect), but also restores the biomechanics of the joint with regard to altered axes of knee and ankle joints.