Surgical saw mount and blade

A surgical saw blade comprising:

• a substantially planar body comprising a distal and a proximal end defining a longitudinal axis lying in the plane of the blade;
• the distal end having a cutting edge;
• the proximal end forming part of a coupling portion for removably coupling the blade to an oscillatory power tool, the coupling portion being configured to be driven such that the blade rotationally oscillates about an axis of rotation running perpendicular to the plane of the blade and crossing the plane of the blade at a point of rotation;
• the coupling portion comprising:
• a lock face perpendicular to the longitudinal axis of the blade and passing through the plane of the blade, the lock face forming part of a boundary of an aperture, the aperture extending through the plane of the blade and wherein the lock face is configured to receive a securing force directed parallel to the longitudinal axis, towards the proximal end of the blade;
• and
• two prongs protruding from the proximal end of the blade, each prong comprising an inner face, the inner faces being angled relative to the longitudinal axis of the blade such that the planes of the inner faces intersect with each other and with the plane of blade at a point of intersection located between the axis of rotation and the distal end of the blade, wherein the angle in the plane of the blade between the two planes of the inner faces at the point of intersection is less than 40°.