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 .
Comparison of cementing techniques of the tibial component in total knee replacement
A few studies have shown that cementing the stem enhances fixation of the tibial baseplate in total knee replacement ( TKR ) . Even the horizontal technique has been shown to provide good fixation . We used radiostereometry to study migration of the tibial component in 30 knees operated with Profix TKR . The knees were r and omised for either complete ( both under the baseplate and around the stem ) or horizontal ( only under the baseplate ) cementing of the tibial component . At two years the tibial baseplate rotated externally a median of 0.18 ° in the uncemented stem group and internally a median of 0.23 ° in the cemented stem group . The tibial baseplate subsided 0.14 mm in the cemented stem group , and no translation was seen in the uncemented stem group . The differences in migration were small and probably without clinical significance . The findings do not favour either of the cementing techniques in TKR.RésuméPeu d’études ont démontré que la fixation cimentée de la queue améliorait la fixation du plateau tibial dans les prothèses totales du genou . Par ailleurs , les fixations horizontales ont également montré une bonne fixation . Nous avons utilisé la radiostéréométrie pour étudier la migration du composant tibial dans 30 genoux de type Profix . Les genoux ont été r and omisés cimentation sous le plateau et autour de la queue ou cimentation horizontale uniquement sous le plateau . À 2 ans le plateau tibial présente une rotation externe de 0,18 ° dans les PTG avec une queue non cimentée et une rotation interne moyenne de 0,23 ° dans le groupe des queues cimentées . La base du plateau tibial s’enfonce de 0,14 mm dans le groupe des queues cimentées et il n’y a pas de translation dans le groupe des queues non cimentées . En conclusion , la différence au niveau de la migration est minime et sans signification clinique . Cette étude ne permet pas de choisir dans les prothèses totales du genou l’une des deux techniques de cimentation
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 .