Ortocanis Dog Knee Brace for Torn Acl Hind Leg, Ligament Rupture and Patella Luxation - Dog Acl Knee Brace - Dog Braces for Back Leg for Support - Dog Back Leg Support Brace (Size S, Left Leg) Left leg Size S (10.23-11.41 ") is up for auction in Pet Supplies. The current bid is $1.00, 99% below the $104.90 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.