What's the Difference Between Cemented and Uncemented?

Cemented THA use polymethylmethacrylate (PMMA) to function as a grout, producing an interlocking fit between cancellous bone and prosthesis. Uncemented hips rely on biological fixation of bone to a surface coating on the prosthesis.

Which is better cemented or uncemented hip replacement?

They concluded that cemented fixation showed an overall better long-term survivorship than cementless fixation in primary THAs. Specifically, cemented fixation survived better in older patients while cementless fixation survived better in younger patients.

Which is better cemented or uncemented knee replacement?

Cemented implants may be a better option for patients who have poor-quality bone due to conditions like osteoporosis; for these patients, bone growth may not be sufficient enough to hold the implant in place. Cemented implants are often recommended for patients who are older, overweight, and less active, as well.