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Table 3 Harris scores in two groups

From: Clinical value of 3D printing guide plate in core decompression plus porous bioceramics rod placement for the treatment of early osteonecrosis of the femoral head

  Preoperatively 6 months postoperatively 12 months postoperatively 18 months postoperatively
Experiment group (n = 20) 72.70 ± 3.81 88.55 ± 1.47a,b 91.80 ± 1.51a,b 94.20 ± 0.95a,b
Control group (n = 20) 70.40 ± 3.36 83.75 ± 2.23a 89.65 ± 1.46a 91.85 ± 0.99a
P values 0.051 < 0.05 < 0.05 < 0.05
  1. avs preoperative values, P < 0.05
  2. bvs control group, P < 0.05