Only a single claim is left standing in the latest bellwether trial over whether the bone-density drug Fosamax causes the jaws of users to deteriorate.

Southern District Judge John F. Keenan has granted summary judgment to Merck & Co. Inc. on all but one claim leading up to the start of the Sept. 7 trial in Secrest v. Merck & Co. Inc., 06 Civ. 6292.