Loosening of the cemented hip prosthesis

Cement particles inhibit bone growth into titanium chambers implanted in the rabbit

“…Immediately after implantation of a cemented component, the adjacent endosteum is injured due to the surgical trauma, vascular disturbance, heat injury due to cement polymerization and toxic effects of the monomer (Sloof 1971, Haas et al 1975, Lindwer and Van Den Hoof 1975, Rhinelander et al 1979, Sund and Rosenquist 1983, Mjoberg 1986). The surrounding bone undergoes a regenerative process and, in so doing, prosthetic stability is established (Mjoberg 1991).…”

Comparison of the uncemented Cone and the cemented Bimetric hip prosthesis in young patients with osteoarthritis: An RSA, clinical and radiographic study

“…In these 34 stems, the translations and the rotations of the rigid body of the stem in the three different directions were also calculated. The precision error (value of precision) of the RSA measurements was determined on examinations postoperatively and a 99% confidence interval was chosen (Mjöberg 1986) (Table 2). A stem was considered to have migrated when the RSA value exceeded the value of precision.…”

Radiostereometric Analysis: The Hip

“…Mjoberg was the first to correlate continous early implant migration of cemented femoral components measured using radiostereometric analysis and late clinical failure [9]. Based on Mjoberg's findings it was later suggested that RSA might be the best technique to evaluate new implant designs considering that prediction of clinical failure is possible evaluating a smaller number of patients with a shorter follow-up [10].…”