The idea of gender specific products is good and patients may benefit from this approach when comparing to non-gender-specific products. The fact is: everyone is different. The "off-the-shelf" sizes may not fit YOU. Even modular products which allow some customization may not fit YOU. What patients really need is:
PATIENT SPECIFIC knees
This is real and is being offered by Smith & Nephew. The doctor will take a MRI of your knee, and send it to the engineers at Smith & Nephew. The engineers will develop a custom knee replacement with YOUR NAME ON IT based on your actual anatomic structure. Yes, it does take an extra appointment to prepare the custom knee in advance, but the surgery will go faster and you have a much greater chance of recovering with a natural gait and minimal discomfort. They may still be in clinical trials, so you should ask around. I think it is called "Patient Match".
