Low profile spinal tethering devices

A spinal anchoring device, comprising:

• a staple body defining a central opening formed therethrough and having opposed arms formed on a proximal surface thereof that define a pathway extending across the central opening for seating a tether;
• a fastening element configured to extend through the central opening formed in the staple body to mate the staple body to bone;
• and
• a locking assembly comprising a first component and a second component, the first component comprising opposed legs configured to be positioned between the opposed arms of the staple body and the second component configured to engage the opposed arms of the staple body such that the first component is fixed relative to the staple body,
• wherein a tether extends through the pathway between the locking assembly and the staple body.

A method of anchoring a tether to bone, comprising:

• implanting a staple body to bone;
• inserting a fastening element through a central opening of the staple body into the bone;
• positioning a substantially flat elongate flexible tether between opposed arms formed on the staple body;
• and
• applying a locking assembly to the staple body, the locking assembly comprising a first component including opposed legs positioned between the opposed arms of the staple body and a second component engaging the opposed arms of the staple body such that the first component is fixed relative to the staple body.