A sterile, metallic surgical instrument intended to be used to create thin channels in the bone layer beneath articular cartilage to enable migration of bone marrow (blood stem) cells to promote healing of a cartilage defect. Otherwise known as nanofracture, subchondral bone needling uses non-rotational force (hammering) during an arthroscopic procedure. It is made of metal [e.g., nickel-titanium alloy (Nitinol)] in the form of a long thin spike with a bulbous proximal end and is typically used with a reusable handle (not included). This is a single-use device.