Surgical procedure
UKR
HYDROXYAPATITE
A standard pre-microplasty surgical procedure as described by the manufacturer was followed for both the cemented and cementless insertions. Prior to the insertion of UKR components, a transparent femoral component template with a stereological point pattern was placed on the sawcut to evaluate the congruency of component–bone area. Lastly, a bead gun (Kulkanon by Wennberg Finmek, Gunilse, Sweden) was used to insert six to eight 1-mm tantalum beads in the peri-prosthetic bone (X-medics, Copenhagen, Denmark). Cement fixation holes were drilled in the femur for improved cement penetration in case of a cemented component, and in the majority of cases when using the cementless component, a few holes were also drilled in the sclerotic subchondral bone with the aim of increasing the number of osteogenic cells at the hydroxyapatite surface.