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Table 1 Comparison of characteristics of the THA-conversion and THA non-conversion groups

From: Ten-year results of concentrated autologous bone marrow aspirate transplantation for osteonecrosis of the femoral head: a retrospective study

  THAb-conversion
group
THAb
non-conversion group
P-value Statistical method
n 27 53
Men/Women 11/16 30/23 n.s. χ2 test
Age 43.7(21.5–70.5) 41(16–71) n.s. t-test
BMI 24 (20–32)a 21.9 (17–30) p < 0.01 t-test
Presence of metabolic syndrome 40% (21/53) 44% (12/27) n.s. χ2 test
Follow up period 13 (11–15) 11.8 (10.0–15.0) n.s. t-test
Etiology
 Steroid 19 (70%) 37 (70%) n.s. Residual analysis
 Alcohol 5 (19%) 14 (26%)
 Idiopathic 3 (11%) 2 (4%)
Preoperative stage
 1 3 9 n.s.
 2 3 28a p < 0.01
 3 16 16 n.s.
 4 5a 0 p < 0.01
  1. aStatistically significant values, bTHA (total hip arthroplasty)