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Table 1 Demographic and diagnosis comparison between the groups with or without cysts.

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

  Study Group
-- with Cyst
Control Group
-- Without Cyst
P-Value
Surgical Date 11/2005 to 1/2009 8/2005 to 12/2008 --
Number of hips 117 117 --
Number of patients 115 115 --
Age at surgery (years) 53 ± 6 (range: 35 to 69) 53 ± 5 (range: 34 to 65) 0.66
Weight (lbs) 189 ± 40 (range: 110 to 290) 186 ± 37 (range: 110 to 275) 0.5
Body mass index 27 ± 4 (range: 19 to 39) 27 ± 4 (range: 20 to 39) 0.59
T-score (Bone mineral density)* 0 ± 1 (range: -2.5 to 3.3) 0 ± 1 (range: -2.4 to 3.5) 0.96
Gender    1
   Women 33 (29%) 34 (30%) --
   Men 82 (71%) 81 (70%) --
Side    1
   Left 53 (45%) 53 (45%) --
   Right 64 (55%) 64 (55%) --
Diagnosis    0.7
   Osteoarthritis 95 (81%) 95 (81%) --
   Dysplasia 20 (17%) 21 (18%) --
   Post Trauma 1 (1%) 1 (1%) --
   Others 1 (1%) 0 (3%) --
  1. * Not available for all the patients.