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Table 5 Conversion to THA

From: Mid-term outcomes of arthroscopic-assisted Core decompression of Precollapse osteonecrosis of femoral head—minimum of 5 year follow-up

  Conversion to THA No THA p-value
Mechanical Symptoms 1/4 3/4 0.55
Ficat-Alret Stage:    0.03*
 Stage I 0/3 3/3 0.18
 Stage IIa 1/4 3/4 0.55
 Stage IIb 4/4 0/4 0.015*
Risk Factors
 Inhaled Corticosteroid 2/2 0/2 0.18
 Smoking Tobacco 2/4 2/4 1.00
Bilateral Hip Involvement 2/6 4/6 0.57
  1. Mechanical symptoms include locking, catching, and buckling. Statistical testing was conducted using Fisher’s Exact Test for correlation of categorical variables. A p-value less than 0.05 indicated a significant difference