Cemented Medial Rotation Knee, cruciate sacrificing. Femoral: CoCr, Cem. Tibial: Cem, Metal backed, polished stem, fixed bearing. Insert: Std Poly, Dished conforming. No patella. The Medial Rotation Knee™ (MRK™) is the original medial ball and socket knee and has been in clinical use for over 20 years.
The MRK™ design was based on the principle that by providing natural functional and anatomical asymmetry in all three compartments, better function and increased patient satisfaction can be achieved without the compromises of traditional TKRs. The result is complete inherent stability throughout the range of motion, coupled with allowance for physiological rotation during flexion. The design also features a physiologically asymmetric patellofemoral joint for a more natural feel and ease of flexion.
Overall, the MRK™ is associated with high functional scores and high rates of patient satisfaction.
Supplier: MatOrtho Limited
Brand: MRK
Fixation - Head: Cemented
Modularity: Modular tibia
First date of use: 1994
Current ODEP rating: 15A*
ODEP Rating / Status Updated: 2023 (K2)
ODEP Rating due for renewal: 2026
Femoral Component Material / Type: MRK pegged
Femoral Component Fixation: cemented
Articulating Surface: standard dished conforming fixed bearing CS
Tibial Component Material / Type: metal backed polished stem fixed bearing
Tibial Component Fixation: cemented
Patella: none
ODEP Product ID: 4321