Figure 4

Inconsistency in the closed loops of reoperation. (IF, internal fixation; unipolar-cemented-HA, U-C-HA; unipolar-uncemented-HA, U-U-HA; bipolar-cemented-HA, B-C-HA; bipolar-uncemented-HA, B-U-HA; uncemented-THR, U-THR; cemented-THR, C-THR).