Stryker designs, manufactures, and markets an array of medical equipment, instruments, consumable supplies, and implantable devices. The product portfolio includes hip and knee replacements, extremities, endoscopy systems, operating room equipment, embolic coils, hospital beds and gurneys, and orthopedic robotics. Stryker remains one of the three largest competitors in reconstructive orthopedic implants and holds the leadership position in operating room equipment. Roughly one-fourth of Stryker's total revenue currently comes from outside the United States.