An American depositary receipt (ADR) is essentially a certificate that represents one or more shares of stock in a foreign company that typically trades on an exchange in a different country.

Beginning in 2000 with the first-ever ADR surgery performed in the United States, they have performed more than 4,000 artificial disc replacement procedures with 14 different types of ADR devices.

Beginning in 2000 with the first-ever ADR surgery performed in the United States, they have performed more than 4,200 artificial disc replacement procedures with 14 different types of ADR devices.