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Table 5 The prevalence of arthroplasty in TKR proband siblings stratified by unilateral versus bilateral joint replacement

From: Hip joint replacement surgery for idiopathic osteoarthritis aggregates in families

Probands (n = 486; mean age in females/males, years [SD]) TKR proband siblings (n = 1208)
  UKR BKR Unaffected Total
UKR (n = 300; 70.1 [7.2]/70.5 [6.7]) 16 (2.0%) 8 (1.0%) 743 (94.1%) 790
BKR (n = 186; 69.8 [8.3]/69.4 [9.6]) 12 (2.9%) 4(0.9%) 392 (93.8%) 418
Total 28 12 1,133 1,208
  1. χ2 (3 degrees of freedom) = 1.39, P > 0.5. BKR, bilateral knee replacement; SD, standard deviation; TKR, total knee replacement; UKR, unilateral knee replacement.