How many femoral sizes are offered in the JII UKA system?

• A. 10 Sizes
• B. 12 Sizes
• C. 8 Sizes
• D. 6 Sizes

Answer: (A)

The point this question tests is how important it is for an unicompartmental knee system to offer a broad range of femoral sizes to match different patient anatomies. A system that provides a wide selection allows the surgeon to pick a component that closely fits the distal femur, ensuring proper coverage of the condyles and appropriate ligament tension. The JII UKA is designed with a broad set of femoral sizes, which is why the correct choice is the option that indicates the widest range. This flexibility supports a better fit, reduces the risk of malalignment or soft-tissue irritation, and helps achieve more natural knee kinematics after surgery. The other options imply smaller size ranges, which can limit the ability to match varying femoral shapes and may necessitate less-than-ideal compromises.