Methods and apparatus for pivotable guide surfaces for arthroplasty

An apparatus configured to guide a cutting tool to create a resected surface in a bone during an arthroplasty procedure, the apparatus comprising:

• a sweeping guide body having fixation features adapted to operably secure the sweeping guide body relative to the bone, the sweeping guide body have a guide pivot reference surface that includes at least one guide pivot aperture defined therein;
• and
• a bushing assembly having a bushing reference plane, a bushing pivot pin and an axial guide structure with an axial guide lumen defined therein with a long axis corresponding to a long axis of a cutting tool,
• such that, when the fixation features are operably secured to the bone and the bushing assembly operably coacts with the sweeping guide body whereby the bushing reference plane operably mates with the guide pivot reference surface and the bushing pivot pin operably engages with one of the at least one guide pivot apertures, the apparatus is configured to provide articulated and axial guidance of the cutting tool as the cutting tool creates at least a portion of the resected surface by inserting the cutting tool into and beyond the axial guide lumen of the guide structure along a long axis of the bushing assembly and sweeping the cutting tool across at least a portion of the resected surface by pivoting the bushing assembly relative to the sweeping guide body on an axis defined by the bushing pivot pin engaged with the one of the at least one guide pivot apertures, and
• wherein the sweeping guide body comprises a base and a pivot arm each having a guide surface that is spaced apart from and facing the other guide surface, the pivot arm connected to and rotationally and translationally adjustable relative to the base.

An apparatus configured to guide a cutting tool to create a resected surface in a bone during an arthroplasty procedure, comprising:

• a sweeping guide body having fixation features adapted to operably secure the sweeping guide body relative to the bone, the sweeping guide body having a guide pivot reference surface;
• and
• a bushing having a bushing reference plane and an axial cannulation adapted to receive a cutting tool,
• such that, when the fixation features are operably secured to the bone and the bushing operably coacts with the sweeping guide body such that the bushing reference plane operably mates with the guide pivot reference surface, the apparatus is configured to provide articulated and axial guidance of the cutting tool as the cutting tool creates at least a portion of the resected surface by inserting the cutting tool into and beyond the axial cannulation of the bushing and sweeping the cutting tool across at least a portion of the resected surface by pivoting the bushing assembly relative to the sweeping guide body on an axis defined by a pivot point between the bushing and the sweeping guide body, and
• wherein the bushing includes a soft tissue retractor adapted to mitigate contact between the cutting tool and soft tissue surrounding an incision through which the cutting tool is inserted to create the resected surface.