A buttress pin for fixing an implant to a bone, comprises a head at a proximal end, the head comprising a rounded outer profile and including first threading and a shaft extending distally from the head, the shaft including second threading extending over at least a portion of a length thereof, a position of a proximal end of the second threading along the shaft being spaced from a distal end of the first threading by a distance equal to a distance between a proximal end of a hole in an implant to be anchored to a bone via the buttress pin and a surface of the bone when the implant is in a target position on the bone.