Orthopedic staple and related instruments

An orthopedic drill guide assembly comprising:

• an elongated body having a distal end and a proximal end, and a longitudinal vertical plane defined therethrough;
• a first guide hole and a second guide hole located near the distal end of the elongated body, wherein the first and second guide holes are arranged in a linear alignment with the longitudinal vertical plane of the elongated body such that the first guide hole is between the second guide hole and the proximal end of the elongated body;
• a distal sliding portion slidably engaging the distal end of the elongated body and is configured to slide back and forth along a direction that is in-line with the longitudinal vertical plane of the elongated body, wherein the distal sliding portion is communicatingly connected to the proximal end of the elongated body and the distal sliding portion's sliding motion is actuated and controlled from the proximal end of the elongated body;
• and
• a third guide hole located on the distal sliding portion and in-line with the first and second guide holes along the longitudinal vertical plane of the elongated body, wherein the first and second guide holes are located between the third guide hole and the proximal end, whereby the distal sliding portion's sliding motion changes the distance between the third guide hole and the first guide hole.