Hybrid Cine Knee - For Knee Joint - Medical Use [M•L Size] Nihon Sigmax Co., Ltd. *With Instruction Manual [Used Item] I purchased this here, but I am selling it because I bought a new one at the hospital and never used this one. The previous seller apparently purchased it at the hospital when they injured their anterior cruciate ligament. (They used it on their right leg, but I believe this product can be used on either leg.) They said this. No returns accepted. I hope someone who needs it can use it.