This is Gender Solutions knee replacement specifically designed for women which is manufactured by Zimmer.
It's now available at the orthopedics dept. at Mount Sinai here in NYC.
From the press release: “Not only is the femoral component specifically designed for the female knee, the Zimmer Gender Solutions™ Knee can also be used with less invasive procedures to allow patients to get up and start moving faster, shortening their recovery time in the hospital,” remarked Dr. Michael Parks, a hip and knee replacement specialist who is directing the implantation of the Gender Knee at Mount Sinai.