Spinal clampedit this page
From Memory Alpha, the free Star Trek reference
Spinal clamps are devices implanted into the spinal columns of Borg drones.
After allowing herself to be assimilated for a mission to aid the inhabitants of Unimatrix Zero in 2377, Captain Kathryn Janeway remarked to Seven of Nine that though The Doctor had removed her spinal clamps, "it'll be a while before [she's] playing hoverball again". (VOY: "Unimatrix Zero, Part II")
