Snap Off Compression Pins for 4 Corner Fusion With Case Series.

Four-corner fusion is a reliable surgical option for symptomatic scapholunate advanced collapse and scaphoid nonunion advanced collapse. There are multiple current techniques with potential complications, including nonunion, hardware failure, impingement, and cartilage disruption. Despite these potential complications, 4-corner fusion can result in good functional outcomes and patient satisfaction. We present a cartilage-sparing technique using snap-off compression pins for 4-corner fusion. Potential benefits of this technique include strong internal fixation and stable compression with implants that avoid dorsal surfaces and the radiolunate articulation.