Roentgen stereophotogrammetric analysis: still a very valuable tool in the orthopaedic research armamentarium

[摘要] Roentgen stereophotogrammetric analysis(RSA) was first introduced by Selvik in 1974 toassess implant micromotion.1 The standardRSA setup involves two synchronous X-raytubes directed at a 20° angle relative to thenormal vector, and a calibration plate positioned underneath the table. The calibrationbox contains reference markers to define thecoordinates and standardize the position ofthe foci.

[学科分类] 骨科学

[关键词] Radiostereometric analysis;Cementless implants;Stem migration;Roentgen stereophotogrammetric analysis;orthopaedic research;RSA;total knee arthroplasty (TKA);randomized controlled trial;component migration;model-based radiostereometric analysis;joint arthroplasty;cementless implants;radiographs