![]() Cementless hydroxyapatite coatings are used on both short stems and longer, traditional stems. ![]() Over a few weeks, the patient’s natural bone grows through the pores, attaching the artificial joint to the hip’s natural remaining bone structure. ‘Cementless’ or ‘uncemented’ stems do not require bone cement in order to fix them in place – the surface of the implant is instead covered in a special (hydroxyapatite) porous coating which helps to fix the prosthesis securely in position. This improves revision options for patients who may need further treatment in later life. Its shape provides a natural fit inside the femur and a better distribution of the load compared with some conventional femoral stems. Mr Stafford uses MiniHip™ and Trifit™, which are both clinically proven, bone-conserving implants. The acetabulum (socket) is replaced as normal with a bearing suitable to the patient. Cemented Stem (Hybrid) Total Hip ReplacementĪ short stem hip replacement uses a shorter femoral implant (in comparison to the longer stems used in traditional THR).What type of replacement is right for you? Different options for hip replacement are available and can be summarised as follows: The length of stem used in Total Hip Replacement can also vary from traditional, longer stems to shorter contemporary, bone conserving stems. The artificial joint may be cemented in position or press-fitted securely in place without cement (uncemented). ![]() These surfaces that move together are known as the ‘bearing’ and allow for smooth and painless movement of the ball in the socket. ![]() The hip socket (into which the ball fits) is replaced with a titanium shell with an artificial liner made of ceramic or hardwearing polyethylene (which sometimes can be fixed directly with bone cement). A metal stem (often titanium) is implanted into the femur and femoral head is replaced with an artificial ceramic ball, which attaches to the metal stem. Both the head of the femur (ball on-top of the thigh bone) and the acetabulum (hip socket) are both replaced. During a total hip replacement (THR), the arthritic or damaged joint is removed and replaced with an artificial joint that moves just like a healthy hip. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |