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Table 2 Pre-surgery and 12-month post-surgery palmar and radial abduction angles (mean ± standard deviation)

From: Comparison of arthrodesis and arthroplasty of Chinese thumb carpometacarpal osteoarthritis

 nPalmar abductionRadial abduction
  Preoperative (°)Postoperative (°)Preoperative (°)Postoperative (°)
Arthrodesis2252.6 ± 8.341.6 ± 5.745.2 ± 5.239.2 ± 4.3
Arthroplasty1754.8 ± 7.258.9 ± 7.346.6 ± 7.252.6 ± 3.6
t  6.021 5.917
P  < 0.001 < 0.001
  1. Values are shown as mean ± standard deviation