Murray, Peter M.

Intramedullary screw fixation (ISF) of metacarpal fractures is a well-established technique. Prior techniques either involve placement of the intramedullary screw in a retrograde fashion or placement of the guidewire in a retrograde fashion before placing the screw in an antegrade fashion. While effective, previously described techniques have risks of extensor tendon irritation, articular cartilage disruption, and limited access to multiple metacarpals from a single incision. We present a novel antegrade intramedullary screw placement and antegrade guidewire technique for ISF that avoids disruption of the metacarpal head and allows for access to multiple metacarpals through a single incision. Cadaveric evaluation confirmed consistent sparing of the distal carpal row and demonstrated the feasibility of this technique across the index through small finger metacarpals. Compared with previously described methods, this technique offers improved soft tissue preservation, reduced risk of tendon scarring, and enhanced surgical efficiency. Level of Evidence: Level IV—case report; cadaveric study.