The 3E triad complies with the Swiss health authorities quality standards; Steps towards recognition; Anatomical aspects of lumbar fusion; Clinical consideration of instability; Indication for operation; Contraindication for plugs fusion; History of Oh‘s temporary marking screw development; Aspects of autologous bone plugs; Operative technical procedure; Routine postoperative checks (plug and screw)for operation -- Contraindication for plugs fusion -- History of Oh‘s temporary marking screw development -- Aspects of autologous bone plugs -- Operative technical procedure -- Routine postoperative checks (plug and screw) -- Expected eff ects -- Discussion -- History of transplant