The 2–2–2–20–20 concept for supraacetabular schanz screw insertion without additional radiography

•We evaluated a new technique in application of supraacetabular schanz screws without image intensifier guidance.•Respecting the anatomical landmarks, pre- and intraoperative fluoroscopy can be avoided.•According to the described anatomical data, we defined a 2–2–2–20–20 concept.•Starting with a 2 cm skin incision 2 cm distal and 2 cm medial to the ASIS with a drill angulation of 20° inferior and 20° lateral orientation.•Using this technique, all schanz screws could be sufficiently inserted without intraprocedural x-ray imaging.