INTERPRETATION The guidelines have improved method ological reporting in RSA studies , but adherence to these guidelines is still relatively low .
BACKGROUND AND PURPOSE Guidelines for st and ardization of  radiostereometry ( RSA )  of implants were published in 2005 to facilitate comparison of outcomes between various research groups .
In this systematic review , we determined how well studies have adhered to these guidelines .
The next generation of acetabular shell design and bearing surfaces.
The  R3 Acetabular component represents the next generation of acetabular shell with an enhanced porous ingrowth surface ( StikTite , Smith & Nephew , Memphis , Tenn ) to meet the needs of both primary and revision hip arthroplasty ; an optimized locking mechanism ; and the ability to accomo date polyethylene , metal , or ceramic liners . This prospect i ve clinical study reports on the safety and efficacy of the new StikTite porous ingrowth surface using radiostereometric analysis ( RSA ) . StikTite provides a superior " sctratch-fit " due to its greater coefficient of friction and less micromotion using RSA measurements
INTERPRETATION The guidelines have improved method ological reporting in RSA studies , but adherence to these guidelines is still relatively low .
BACKGROUND AND PURPOSE Guidelines for st and ardization of  radiostereometry ( RSA )  of implants were published in 2005 to facilitate comparison of outcomes between various research groups .
In this systematic review , we determined how well studies have adhered to these guidelines .