RM Pressfit vitamys: the 10-year follow-up

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Medical Device Technology

Background:

• The RM Pressfit vitamys is an uncemented, titanium particle-coated, isoelastic monoblock cup.
• It is constructed from vitamin E blended highly cross-linked polyethylene.
• This study evaluates its 10-year clinical and radiographic outcomes and revision rate.

Purpose of the Study:

• To assess the 10-year clinical outcomes of the RM Pressfit vitamys hip cup.
• To evaluate the 10-year radiographic results following implantation.
• To determine the cumulative revision rate at the 10-year mark.

Main Methods:

• A prospective observational study involving 162 total hip replacements using the RM Pressfit vitamys cup.
• Data collected at 6 weeks, 1, 5, and 10 years included modified Harris Hip Score (mHHS), pain, satisfaction, and radiographic evaluation.
• Revision rates and complications were systematically recorded.

Main Results:

• At 10 years, 99 hips were evaluated with a mean mHHS of 94.8, minimal pain (0.2 rest, 0.5 load), and high satisfaction (9.5/10).
• Radiographic assessment revealed no cup loosening, acetabular lucent lines, or osteolysis.
• The 10-year cumulative revision rate was 2.0%, with aseptic loosening showing 100% implant survival.

Conclusions:

• The RM Pressfit vitamys cup demonstrates promising 10-year results.
• Good clinical outcomes, including high patient satisfaction and function, were observed.
• Low revision rates and excellent radiographic findings indicate favorable long-term performance.