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 .
Evaluation of Boneloc. Chemical and mechanical properties, and a randomized clinical study of 30 total hip arthroplasties.
We evaluated the mechanical , chemical and clinical properties of Boneloc cement using radiostereometry and a series of laboratory tests . Compared to a st and ard cement ( Palacos ) the new cement displayed reduced tensile strength , elastic modulus , curing and glass transition temperatures . The amount of MMA extracted during 3 weeks in methanol was smaller for the Boneloc , but the total amount of released monomers was larger . The adhesion to stainless steel and bone did not differ . Radiostereometric analysis during the first postoperative year in 30 patients r and omized to fixation of hip prostheses using either of the 2 cements displayed increased proximal migration of the cup and increased stem subsidence when Boneloc had been used . Part of the stem subsidence occurred inside the cement mantle . On the basis of these findings , we conclude that the inferior fixation in the Boneloc group is mainly caused by its mechanical properties . Other mechanisms , such as increased release of monomers , may also be important
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 .