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Table 3 Comparison of pre- and post-operative HHS, HPS

From: RETRACTED ARTICLE: High failure rate after Beta-tricalcium phosphate grafting for the treatment of femoral head osteonecrosis: a retrospective analysis

ARCO stage Hips Pre-operation Post-operation P value
HHS/HPS
HHS HPS HHS HPS
IIb 8 87.87 ± 2.03 38.00 ± 5.13 62.25 ± 16.09 18.75 ± 8.35 0.004/0.003
IIc 16 81.50 ± 3.61 30.63 ± 2.50 60.88 ± 18.61 16.88 ± 8.73 0.001/<  0.001
IIIa 23 73.09 ± 2.45 20.43 ± 2.09 44.04 ± 8.12 11.30 ± 3.44 <  0.001/<  0.001
Total 47 78.47 ± 6.39 26.89 ± 7.43 52.87 ± 16.14 14.47 ± 7.17 <  0.001/<  0.001