The minimally invasive hip replacement

THE MINIMALLY INVASIVE HIP REPLACEMENT

Hip alternative is a serious orthopedic surgical procedure which consists in changing the hip affected by hip osteoarthritis.

The surgical procedure entails the prosthesis of the complete joint, via the implantation of two titanium parts that are anchored to the affected person’s bone with out the help of cement, versus the knee prosthesis.

There are 3 kinds of hip prostheses: the whole prosthesis, or joint prosthesis, through which each the femur and the acetabulum are changed; partial prosthesis, or endoprosthesis, through which solely the pinnacle of the femur is changed (often when a fracture of the femoral neck happens in an aged affected person); the resurfacing prosthesis, through which each the femur and the acetabulum are changed however the neck of the femur is spared (this can be a surgical procedure reserved for chosen instances, that’s, younger and sports activities sufferers with superior osteoarthritis).

In some instances, the hip prosthesis will also be cemented: these are chosen sufferers affected by extreme osteoporosis. The selection of which prosthesis to make use of is dependent upon the traits of the affected person and the standard of his bone. Usually in aged sufferers and sufferers with osteoporosis it’s most popular to carry out cemented prostheses, which have the benefit of instantly fixing the prosthesis to the bone and permitting for an early and full load. Non-cemented prostheses, however, are thought-about organic as they’re coated with a fabric that enables osseointegration by the affected person, whose bone envelops and penetrates contained in the holes of the prosthetic floor.

The minimally invasive approach in hip alternative

The minimally invasive hip prosthesis offers for a posterolateral entry (in actuality there are a number of minimally invasive entry routes) with passage via the gluteal muscular tissues, with out nevertheless dissecting them; just one tendon is sacrificed, the piriformis, which on the finish of the surgical procedure is repositioned in its unique web site with resorbable factors. The intervention additionally offers for the saving of part of the femoral neck and using prostheses with brief femoral stems. Due to the “Femur-First” approach, additionally it is potential to acquire passable outcomes by positioning the prosthetic parts in such a manner that they’ve an optimum working angle, guaranteeing an extended lifetime of the polyethylene insert and a decrease threat of implant dislocation.

Which prosthesis to decide on?

The selection of the prosthesis is dependent upon numerous elements, together with the age of the affected person and his useful necessities, however above all of the geometry of the hip. In actual fact, there are several types of prostheses that assist you to faithfully reproduce the geometry of that exact affected person. In actual fact, not all hips have the identical form, and every affected person has his personal geometry: the aim of every hip prosthesis is to attempt to reproduce the unique anatomy as a lot as potential.

For this objective, there are a number of strategies, each for selecting the kind of prosthesis and its dimensions. Certainly the pc is among the most evolutionary and exact strategies. There’s a software program known as Osirix, which lets you calculate the geometry of the hip on the idea of the affected person’s X-ray, and because of a recognized metallic landmark it is ready to inform us if the chosen prosthesis reproduces the anatomy and geometry, the ultimate size of the decrease limbs and the sizes of the prosthesis.