The present invention relates to devices and techniques for securing bone segments across a fracture site, and more particularly relates to bone staples for achieving compression between segments. A method and apparatus for interosseous bone fixation uses a compression staple, generally U-shaped, having a pair of legs with proximal ends interconnected by a bridge portion that is resilient and bowed, the staple having an initial configuration and capable of a tensioned configuration by spreading apart the legs by a certain amount causing the curvature of the bowed bridge to lessen and the legs to move towards each other with certain compressive spring force.