Spinal plates with additional features to improve the stability of the interface between the plate and the underlying bone. A bone plate may include one or more sharp ridges along the periphery of its underside. When attached to bone, the ridge digs into the bone and increases stability. A bone plate may alternatively or additionally include one or more holes for optional spikes, which may be inserted once the plate is attached to the bone. By separating the spikes and including them as an optional component, the plate may enhance stability while reducing or eliminating the chance of the spike injuring the patient. Furthermore, bone screws may incorporate alternating notches and ridges into the head of the screw. The notches and ridges may interface with a set screw, thereby preventing rotation and loosening of the screw.

Spinal plates with additional features to improve the stability of the interface between the plate and the underlying bone. A bone plate may include one or more sharp ridges along the periphery of its underside. When attached to bone, the ridge digs into the bone and increases stability. A bone plate may alternatively or additionally include one or more holes for optional spikes, which may be inserted once the plate is attached to the bone. By separating the spikes and including them as an optional component, the plate may enhance stability while reducing or eliminating the chance of the spike injuring the patient. Furthermore, bone screws may incorporate alternating notches and ridges into the head of the screw. The notches and ridges may interface with a set screw, thereby preventing rotation and loosening of the screw.

A surgical hammer that includes a handle, a shaft extending from the handle and a hammer head connected to the shaft. The hammer head includes a slot extending through the hammer head and in fluid communication with a distal end of the hammer head, a first internal cavity within the hammer head spaced laterally from the slot, and a second internal cavity within the hammer head spaced laterally from the slot.

An impactor according to an embodiment of the present invention comprises an adapter detachably coupled to a rotary power tool, wherein the adapter includes: a case part; a tool coupling part receiving a rotational force from the rotary power tool; a first rotating part rotating in association with rotation of the tool coupling part in only one direction among rotation directions of the tool coupling part; a striking part transfer part rotating in association with rotation of the first rotating part; a striking part which is moved, while compressing a first spring, in a first direction by rotation of the striking part transfer part and then moved in a second direction opposite to the first direction by a restoring force of the first spring; and a force transfer part moved in the second direction by contact with the striking part.

An impactor according to an embodiment of the present invention comprises an adapter detachably coupled to a rotary power tool, wherein the adapter includes: a case part; a tool coupling part receiving a rotational force from the rotary power tool; a first rotating part rotating in association with rotation of the tool coupling part in only one direction among rotation directions of the tool coupling part; a striking part transfer part rotating in association with rotation of the first rotating part; a striking part which is moved, while compressing a first spring, in a first direction by rotation of the striking part transfer part and then moved in a second direction opposite to the first direction by a restoring force of the first spring; and a force transfer part moved in the second direction by contact with the striking part.

Implants, systems, instruments, methods, and kits for metatarsophalangeal joint arthroplasty may include metatarsal arthroplasty implants, repositioning guides, broach tools, inserter tools, and sterilizable packaging configured to facilitate metatarsal arthroplasty surgical procedures. The metatarsal arthroplasty implants may generally include an articular member having a convex articular surface, a concave bone-facing surface opposite the convex articular surface, and at least one side surface intermediate the convex articular surface and the concave bone-facing surface, as well as a central shaft sized for insertion into a metatarsal bone having a central shaft longitudinal axis, a central shaft proximal end coupled to the concave bone-facing surface of the articular member, and a central shaft distal end extending away from the concave bone-facing surface of the articular member along the central shaft longitudinal axis.

A surgical implant for fixing a soft tissue to a bone comprising a staple and a plate. The staple and the plate are positionable on an instrument in such a way that the plate may be manipulated with the instrument to hold the soft tissue against the bone and in such a way that the staple is fixable to the bone with the plate positioned between a bridge of the staple and the soft tissue when legs of the staple are driven through the plate and into the bone.

A surgical implant for fixing a soft tissue to a bone comprising a staple and a plate. The staple and the plate are positionable on an instrument in such a way that the plate may be manipulated with the instrument to hold the soft tissue against the bone and in such a way that the staple is fixable to the bone with the plate positioned between a bridge of the staple and the soft tissue when legs of the staple are driven through the plate and into the bone.

Embodiments of the present invention relate generally to implant placement into bone. More specifically, embodiments of the invention relate to implant placement across the sacro-iliac joint. Placement can be facilitated using various CT imaging views that allow the implants to be placed in bone associated with articular cartilage.

Embodiments of the present invention relate generally to implant placement into bone. More specifically, embodiments of the invention relate to implant placement across the sacro-iliac joint. Placement can be facilitated using various CT imaging views that allow the implants to be placed in bone associated with articular cartilage.