Almost all surgical procedures could be performed on a standard biobed fitted with a surgical support frame, but the Enterprise was also equipped with advanced surgical biobeds that were needed for some more complicated procedures, such as the operation Dr. Toby Russell performed to replace Worf's spinal cord in 2368. These biobeds followed the same principles as their counterparts in the main ward, but contained more sophisticated sensors and an extended clamshell unit that was used to cover the patient's entire body, establishing a larger sterile field that was needed in major surgery. One of the bed's most impressive features was a sliding diagnostic unit that provided incredibly detailed information on the area being worked on.