Percutaneous fixation of scaphoid fracture. Guidewire in central axis of scaphoid for placement of screw. (From Slade JF III, Gutow AP, Geissler WB: Percutaneous internal fixation of scaphoid fractures via an arthroscopically assisted dorsal approach, J Bone Joint Surg 84A[Suppl 2]:21, 2002.) SEE TECHNIQUE 69.8.