A single-center Level-I RCT compared cemented versus cementless versions of the same cruciate-retaining Triathlon TKA design. The cementless tibia used a 3D-printed highly porous titanium coating for biologic fixation. The question: do modern cementless implants match cemented ones in early clinical and radiographic outcomes?
The clinical question here is whether modern porous cementless TKA has solved the early-failure problem that doomed older sintered-bead designs. This RCT says yes, at least short-term: a 3D-printed porous titanium tibia matched its cemented twin in every outcome, with zero aseptic failures at 2 years.
Remember why fixation mode matters. Aseptic loosening drives 31-39% of TKA revisions, and younger patients loosen faster, which is exactly the growing demographic. Cementless fixation aims to biologically remodel rather than depend on cement, which resists shear and tension poorly.
Weigh the appraisal carefully. This is a single-center trial with only 4 surgeons, strict exclusions (no BMI over 40, no osteoporosis or bone defects), short 2-year follow-up, and industry funding. It shows equivalence and safety, not superiority. The burden of proof still rests on cementless designs, since they cost more and must eventually demonstrate a survivorship advantage over cement.
A single-center Level-I RCT compared cemented versus cementless versions of the same cruciate-retaining Triathlon TKA design. The cementless tibia used a 3D-printed highly porous titanium coating for biologic fixation. The question: do modern cementless implants match cemented ones in early clinical and radiographic outcomes?
The clinical question here is whether modern porous cementless TKA has solved the early-failure problem that doomed older sintered-bead designs. This RCT says yes, at least short-term: a 3D-printed porous titanium tibia matched its cemented twin in every outcome, with zero aseptic failures at 2 years.
Remember why fixation mode matters. Aseptic loosening drives 31-39% of TKA revisions, and younger patients loosen faster, which is exactly the growing demographic. Cementless fixation aims to biologically remodel rather than depend on cement, which resists shear and tension poorly.
Weigh the appraisal carefully. This is a single-center trial with only 4 surgeons, strict exclusions (no BMI over 40, no osteoporosis or bone defects), short 2-year follow-up, and industry funding. It shows equivalence and safety, not superiority. The burden of proof still rests on cementless designs, since they cost more and must eventually demonstrate a survivorship advantage over cement.