Observed arrival · 2026-09-30
NotchPass: a knee-implant compatibility check
An interactive reference calculator compares retrograde femoral nail and instrument dimensions with the intercondylar notch width of a knee replacement.
- For
- Qualified surgeons planning retrograde femoral nailing
- Worth noticing
- It compares the widest relevant instrument with the narrowest reported notch width and identifies when dimensions are inferred.
Field notes
Users choose a knee-replacement femoral component and enter its measured intercondylar distance, then select a retrograde nail and reamer settings. The comparison uses the widest relevant instrument against the narrowest reported notch width, showing source material with each result; where sources conflict, it says it takes the more cautious answer. The page notes that some dimensions are inferred and that geometry and patient-specific factors remain outside the calculation.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue