Fig. 1

The FINE total knee. The femoral condyle has an asymmetric shape and femorotibial joint line with an oblique 3° angle both in coronal (left) and axial (right) planes which is incorporated into the implant design. The medial surface of the polyethylene insert has a convex curve while the lateral surface possesses a flat surface. FINE reproduces anatomical geometry by conducting osteotomy perpendicular to the mechanical axis