EXHIBIT 10.21 ADDENDUM TO EIGHT PERCENT SECURED CONVERTIBLE SUBORDINATED NOTE This ADDENDUM TO EIGHT PERCENT SECURED CONVERTIBLE SUBORDINATED NOTE is entered into as of January 22, 1999, by and between CREATIVE MEDICAL DEVELOPMENT, INC. ("Debtor") and...Eight Percent Secured Convertible Subordinated Note • March 17th, 1999 • Omni Rail Products Inc • Surgical & medical instruments & apparatus
