Unicompartmental customized arthroplasty cutting jigs

A femoral arthroplasty jig for assisting in the performance of a femoral arthroplasty procedure on a femoral arthroplasty target region of a femur of a patient, the femur including an articular condyle surface, an articular trochlear groove surface, and an area between an articularis genu and a patellar facet boarder on an anterior side of a femoral shaft, the articular condyle surface including a medial articular condyle surface and a lateral articular condyle surface, the articular trochlear groove surface including an anterior-proximal trochlear groove surface with an anterior-proximal edge, the jig comprising:

• a mating surface including a customized surface contour that is a negative of certain surfaces of the femoral arthroplasty target region, the mating surface configured to matingly receive and contact the certain surfaces of the femoral arthroplasty target region, the certain surfaces including the articular condyle surface, the articular trochlear groove surface, and at least one contact point on the anterior-proximal edge of the anterior-proximal trochlear groove surface, the at least one contact point comprises at least one hooking point configured to contact a proximal portion of the anterior-proximal edge of the anterior-proximal trochlear groove surface.

A femoral arthroplasty jig for assisting in the performance of a femoral arthroplasty procedure on a femoral arthroplasty target region of a femur of a patient, the femur including an intercondylar notch, an articular condyle surface, an articular trochlear groove surface, and an area between an articularis genu and a patellar facet boarder on an anterior side of a femoral shaft, the articular condyle surface including a medial articular condyle surface and a lateral articular condyle surface, the articular trochlear groove surface including an anterior-proximal trochlear groove surface with an anterior-proximal edge, the jig comprising:

• an exterior portion;
• and
• an interior portion opposite the exterior portion, the interior portion comprising a mating surface comprising a distal condylar mating surface and an anterior mating surface, the distal condylar mating surface configured to matingly receive and contact the articular condyle surface, and the articular trochlear groove surface, the anterior mating surface defined on an anterior flange of the jig and including a hooking portion, the hooking portion comprising at least one hooking point configured to contact a proximal portion of the anterior-proximal edge of the anterior proximal trochlear groove surface.