From: One-sided hip-preserving and concurrent contralateral total hip arthroplasty for the treatment of bilateral osteonecrosis of the femoral head in different stages: short-medium term outcomes
Groups
Pre-op
Post-op
P value
ST Groups
5.6 ± 2.0
1.8 ± 1.4
P < 0.05
AL Groups
6.6 ± 2.0
3.6 ± 2.5