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 .
Cemented versus uncemented fixation of the femoral component of the NexGen CR total knee replacement in patients younger than 60 years: a prospective randomised controlled RSA study.
The optimal mode of femoral fixation in total knee arthroplasty ( TKA ) remains controversial , especially for the young patient . In a prospect i ve r and omised study we compared the magnitude and pattern of the fixation of cemented versus uncemented femoral components during 2 years in patients younger than 60 years . Forty-one knees in 41 patients were r and omised to receive a NexGen ( Zimmer , Warsaw , USA  ) cruciate-retaining TKA with either a cemented or an uncemented non HA-coated femoral component . The patients were examined by radiostereometric analysis ( RSA ) , as well as clinical and radiological evaluation . The magnitude and pattern of migration as measured by RSA did not differ significantly between the cemented and uncemented fixation during the 2-year follow-up , nor were there any differences between the groups in clinical parameters . These findings suggest that an uncemented and non HA-coated femoral component may behave equally as well as a cemented one in the long-term
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 .