Are you thinking of this perhaps
http://www.theshouldercenter.com/Reverse-Total-Shoulder-Replacement.htm
reverse shoulder replacement, reverse in that the ball is on the torso side, and the cup is on the arm side, instead of visa versa the way the original equipment shoulder is set up.
Not familiar with companies that make the stuff, but could find out pretty easy
bet the company you are looking for is on this list
http://www.firmafrance.com/sites/snitem/Medical-device-french_companies.asp