Hip Implant Fixation - Anchoring The Implant

A hip implant consists of a femoral component including a metal ball and stem fitting into femoral shaft and a plastic acetabular cup. The hip replacement implant fixation can be cemented, non-cemented or hybrid. The cemented type fixation for hips uses a material that percolates into the small pores in the bone. The non-cemented type replacement implants for hips have microporous components in which the natural bone tissue can grow into. The hybrid type of replacements for hips includes both types of fixation methods. Hip implant fixation, by the anchoring the implant to the bone, strengthens the joint interface, enabling the joint to withstand extreme stress.

The process of hip implants fixation starts from the very first step of the surgeon creating a mechanical interlock between the bone and the implant. Bone death surrounding the implant also decides the degree of fixation of the hip replacement. As soon as components of the implant come in contact, a biological film is formed in between. The thickness of this film plays an important role in fixation. Post operatively, when the activities are resumed, over exertion is detrimental for fixation of the implant. Finally, the body’s own mechanism of bone turnover poses a threat to replacements. For maximum strength, undue stress should be avoided in the immediate post-operative period following a hip replacement with an artificial implant.

A strong implant fixation is the key factor in hip replacements. The modifiable factors contributing to implant fixation can be manipulated in order to get a strong, smooth functioning hip joint. New metallic alloys are now available for implants which have less tissue reactivity and an increased endurance towards wear and tear.

Also see; total hip operation.

About The Author:

Dr. Bharat Sharma is a successful author and regular contributor to http://www.hip-replacement-care.com. He has been working in the medical rehab field for more than a decade. Keeping up to date with techological advancements he has become a self appointed expert.