Drill/driver hybrid instrument for interphalangeal fusion

A method of bone fusion and repair, comprising the steps of:

• threading an end of a rigid fixation device in first tunnel in a first bone fragment;
• and
• threading an opposite end of the rigid fixation device in a second tunnel in a second bone fragment to align the second bone fragment to the first bone fragment.

A method of installing a fixation device across a DIPJ or PIPJ joint, comprising the steps of:

• partially inserting a fixation device within a first tunnel of a first bone of a DIPJ or PIPJ joint, the fixation device being provided with a first set of threads at a first end and a separate, second set of threads at a second end, so that the first set of threads is fully or partially within the first tunnel;
• and
• securing the second set of threads within a second tunnel of an adjacent second bone of the DIPJ or PIPJ joint, so that the fixation device extends across the first and second bones of the DIPJ or PIPJ joint, to join together the first and second bones.