Continuum

All THA procedures were conducted using the modified hardinge approach. The procedures were performed by a single surgeon at one institution. The acetabular cup was inserted with cementless press-fix fixation after the exposure of the subchondral bone, and a minimum host bone coverage of approximately 75% was achieved with adequate medicalization. Two or three supplemental acetabular screws were added. The consecutive next procedures were performed without delay. The intra-operative measurements were conducted in the labs while operating. The quantified intra-operative measurement of the host bone coverage was reported to the operator around the end of the procedure. Then, we could confirm the intra-operative host bone coverage without a prolonged operative time.
The Continuum (Zimmer-Biomet, Warsaw, IN, USA) acetabular component design was used for the implantation in all hips. The external diameter of the acetabular component ranged from 52 mm to 68 mm. An elevated liner was used in 13 hips, while the remaining 18 hips were fitted with a neutral liner. The Biolox Delta ceramic head was used in all the hip implants. For femoral implants, preoperative templating was used for the selection of the implant that best suited the morphological features of each patient’s medullary cavity (Table 1).

All THA procedures were conducted using the modified hardinge approach. The procedures were performed by a single surgeon at one institution. The acetabular cup was inserted with cementless press-fix fixation after the exposure of the subchondral bone, and a minimum host bone coverage of approximately 75% was achieved with adequate medicalization. Two or three supplemental acetabular screws were added. The consecutive next procedures were performed without delay. The intra-operative measurements were conducted in the labs while operating. The quantified intra-operative measurement of the host bone coverage was reported to the operator around the end of the procedure. Then, we could confirm the intra-operative host bone coverage without a prolonged operative time.
The Continuum (Zimmer-Biomet, Warsaw, IN, USA) acetabular component design was used for the implantation in all hips. The external diameter of the acetabular component ranged from 52 mm to 68 mm. An elevated liner was used in 13 hips, while the remaining 18 hips were fitted with a neutral liner. The Biolox Delta ceramic head was used in all the hip implants. For femoral implants, preoperative templating was used for the selection of the implant that best suited the morphological features of each patient’s medullary cavity (Table 1).