ALEXANDRIA, Va., July 21 -- United States Patent no. 12,685,651, issued on July 21, was assigned to MAKO SURGICAL CORP. (Weston, Fla.).

"System and method for ligament balancing using robotically held device" was invented by Jason Otto (Plantation, Fla.) and Xiao Hui Gao (Weston, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of assessing ligament balance in a joint. The method comprising forcing, by motors of joints of an articulated arm of a robotic device, a ligament balancing device to apply a first force to a first bone of the joint in contact with the ligament balancing device, holding the first bone with the first force while allowing manual manipulation of a second bone of the joint and...