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Table 6 Comparison of the results between Beaule & Amstutz's study and the present study.

From: Is there added risk in resurfacing a femoral head with cysts?

  Beaule & Amstutz[6] Gross & Liu
Publish year 2004 2011
# of patient 92 234
# with cysts > 1 cm 3 54 117
# without cysts 38 117
Follow-up length (yrs) 3 (range: 2 to 5.6) 3.5 yr (range: 2 to 5.4)
UCLA activity score 7.1 8
Femoral revision rate 3% 1.3%
Femoral migration 2% 0%
Femoral radiological loosening 8.7% 0%
P value of femoral component failures between cyst and non-cyst group 0.028 0.08