Devices and methods for removing bone

A guide for a rotating tool, the guide comprising:

• a body having:
• a contact surface configured to facilitate locating the guide relative to a patient;
• a first guide channel:
• configured to receive a rotating tool for removing bone from the patient, configured to guide the rotating tool as the rotating tool is swept along a path,
• including a first opening extending through the contact surface, and
• including a second opening extending through a guide face that is spaced apart from the contact surface, the first opening being smaller than the second opening, and the second opening being an elongated opening such that the rotating tool can be pivoted when disposed within the first guide channel;
• and
• a second guide channel, the first guide channel defining a first mid-plane, the second guide channel defining a second mid-plane, and the first and second mid-planes are non-parallel;
• wherein a portion of the body is radio-opaque.

A system, comprising:

• a rotating cutting tool comprising:
• an elongated shaft having at least one cutting edge for removing bone from a patient,
• a depth stop coupled to the elongated shaft, a depth stop in the form of at least one of a sphere and a truncated cone and configured to restrict a depth off insertion of the elongated shaft such that the depth of a tip of the rotating cutting tool remains constant as the rotating cutting tool is pivoted;
• and
• a guide, the guide having a body including:
• a contact surface configured to position the guide relative to the patient;
• a first guide channel:
• configured to receive at least a portion of the elongated shaft of the rotating cutting tool such that the rotating cutting tool is guided as the at least one cutting edge is swept along a path.