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Table 4 Radiographic OA grade comparison immediately and 1 year after surgery

From: Treating AO/OTA 44B lateral malleolar fracture in patients over 50 years of age: periarticular locking plate versus non-locking plate

 PLP (n = 34)TP (n = 38)p
 T0T1T0T1 
OA grade [n (%)]
 00000 
 126 (76.5%)22 (61.8%)24 (63.1%)8 (21.1%) 
 28 (23.5%)12 (32.3%)14 (36.9%)25 (65.8%) 
 30005 (13.1%) 
 40000 
OA grade progression (T1-T0, ΔT) [n (%)]    < 0.001***
 0 29 (85.3%) 17 (44.7%) 
 1 5 (14.7%) 21 (52.6%) 
 2 0 0 
 3 0 0 
 4 0 0 
  1. T0 immediately after surgery, T1 1 year after surgery, ΔT (T1-T0): Changes 1 year after surgery; ***p < 0.001 (Fisher’s exact test)