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Table 3 OHS-C scores before and after the operation

From: Study on the outcome of patients with aseptic femoral head necrosis treated with percutaneous multiple small-diameter drilling core decompression: a retrospective cohort study based on magnetic resonance imaging and equivalent sphere model analysis

 

Preoperative

6 months after the operation

End of follow-up

Stage

 Phase I

24.7 ± 1.9

41.9 ± 3.5**

45.6 ± 3.2**

 Phase II

22.4 ± 2.2

30.8 ± 6.6*

26.0 ± 12.5

Pathogeny

 AFHN

24.2 ± 1.9

43.4 ± 2.8**

47.2 ± 1.8**

 SIFHN

22.0 ± 2.6

27.3 ± 3.3*

17.0 ± 2.9**

 IFHN

23.7 ± 2.4

34.8 ± 6.4*

35.6 ± 11.1*

Total

23.4 ± 2.3

35.6 ± 7.8**

34.6 ± 13.7*

  1. AFHN alcoholic femoral head necrosis, SIFHN steroid-induced femoral head necrosis, IFHN idiopathic femoral head necrosis
  2. *P < 0.05; **P < 0.01
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X