Uncemented Hip replacement

Cementless or Uncemented hip replacement- Cementless hip replacements refer to the fixation of the prosthesis in bone without the interposition of bone cement. The implant gains initial fixation by a tight fit and subsequently is fixed by bony ingrowth.

Indications for uncemented hip replacement- Young patients with good bone stock are ideal candidates for an uncemented hip replacement. These are patients with conditions like post traumatic arthritis, Avascular necrosis, ankylosing spondylitis, Perthes disease, Slipped upper femoral epiphysis, DDH, protrusio acetabuli.

Bearings for uncemented hips Ceramic on poly, ceramic on metal, metal on metal, metal on poly are the common bearings. Ceramic and metal are hard bearings with advantage of durability. Cross linking of polyethylene has made it also to last longer. Uncemented femoral stems are of two types, conventional and short stem. The Proxima is an example of a short stem uncemented hip replacement. Others are the METHA hip, BMHR, Silent hip and Nannos Hip

Head diameter
Head diameter ranges from 22mm for poly cups to 36 for ceramic cups. Normal diameter is possible with metal on metal surfaces. Risk of dislocation is least with metal on metal large diameter bearings.

Watch video of a cementless hip replacement here
http://www.youtube.com/watch?v=nn7BHMxCU6E- part 1.

http://www.youtube.com/watch?v=Ko29jjQ6GrQ&feature=related- part 2

http://www.youtube.com/watch?v=y2iTEfjBnF0&feature=related- part 3

To get a cost for an uncemented or cementless hip replacement please send e mail to drvenkat@kneeindia.com