Fig. 3A–B.

Graphs show stem subsidence at the prosthesis-cement interface, measured by EBRA, for unrevised hips at last followup from (A) Series 1 and (B) Series 2 and 3. Cases of intraoperative and postoperative periprosthetic fracture are identified. (A) In Series 1, the extent of stem subsidence at the prosthesis-cement interface is variable and progresses over time and, in nearly 1/2 of the hips, exceeds 5 mm. (B) In contrast, in Series 2 and 3, the extent of subsidence at the prosthesis-cement interface is more consistent between hips. While there is some progression of subsidence over time, no hips exceed 5 mm of subsidence at latest followup.