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Table 4 HHS 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

76.9 ± 4.9

86.9 ± 2.5**

93.2 ± 3.3**

 Phase II

66.5 ± 5.8

71.4 ± 5.4**

67.4 ± 15.3

Pathogeny

 AFHN

78.3 ± 5.3

87.8 ± 2.4**

94.0 ± 3.2**

 SIFHN

61.9 ± 5.3

66.9 ± 2.7*

55.0 ± 3.3*

 IFHN

71.1 ± 3.0

77.8 ± 5.9*

81.2 ± 12.9*

Total

71.1 ± 7.5

78.2 ± 9.1**

78.7 ± 17.4*

  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