Statistical Analysis
The means or medians and standard deviation or interquartile ranges were used for
continuous variables, and absolute and relative frequencies were used for
categorical variables. The variables were compared according to the type of
prosthesis using non-parametric hypothesis tests: Mann-Whitney U test for
continuous variables and Fisher’s exact test for categorical variables. Mean
profile plots were constructed according to prosthesis type and time for the
laboratory variables. For laboratory measurements, mixed linear models were
used, the fixed effect was given by the type of prosthesis, and the random
effect by time. The 