Allograft Tendon Interposition Arthroplasty of the Hallux Metatarsophalangeal Joint: A Technique Guide and Literature Review.

The "anchovy" interpositional arthroplasty technique can be used as a salvage option for failed hallux rigidus procedures. The operative technique utilized by the senior author is described. Careful soft-tissue handling, meticulous joint space and graft preparation, and interposition graft stabilization using a bone tunnel and suture anchors are unique aspects of this technique, which in the authors' experience have contributed to improved outcomes.