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Table 3 Pre- and post-operative radiographic features

From: Salvage of severe knee osteoarthritis: efficacy of tibial condylar valgus osteotomy versus open wedge high tibial osteotomy

  HTO TCVO SHTO STCVO
%MA
 Pre-operative 15.9 ± 12.6a 5.4 ± 8.4 6.9 ± 6.1a − 1.6 ± 5.1
 24-month post-operative 59.7 ± 10.1b 61.2 ± 7.1a 51.4 ± 8.5b,c 61.3 ± 7.6a
FTA (°)
 Pre-operative 182.9 ± 3.9 185.0 ± 3.8 186.7 ± 1.2 188.5 ± 2.9
 24-month post-operative 172.9 ± 3.4b 171.3 ± 2.5a 176.3 ± 2.0b,c 171.1 ± 2.9a
MPTA (°)
 Pre-operative 82.4 ± 2.9 82.4 ± 2.8 80.2 ± 1.6 80.9 ± 2.9
 24-month post-operative 90.3 ± 2.4 b 91.7 ± 2.1a 88.2 ± 1.6b,c 92.8 ± 2.0a
mLDFA (°)
 Pre-operative 88.6 ± 1.2 88.9 ± 1.3 88.7 ± 1.2 89.2 ± 1.2
 24-month post-operative 88.1 ± 1.0 88.6 ± 1.6 88.4 ± 0.9 89.5 ± 1.3
JLCA (°)
 Pre-operative 2.8 ± 0.9a 6.4 ± 1.7 3.6 ± 0.3a 7.5 ± 1.6
 24-month post-operative 2.2 ± 1.3b 1.2 ± 0.9a 3.4 ± 1.1 c 1.4 ± 1.1a
MTPD (°)
 Pre-operative − 1.3±1.6 a − 8.0 ± 2.9 − 2.4 ± 1.1a − 9.9 ± 2.6
 24-month post-operative − 1.0±1.8 c 5.9 ± 2.5a − 2.3 ± 1.4c 5.9 ± 3.2a
PPTA (°)
 Pre-operative 83.9 ± 1.9 82.4 ± 2.4   
 24-month post-operative 81.2 ± 2.4b 82.0 ± 3.2   
  1. %MA percentile of the lower limb mechanical axis on the tibial plateau, FTA Femorotibial angle, MPTA Medial proximal tibial angle, mLDFA Mechanical lateral distal femoral angle, JLCA Joint line convergence angle, MTPD Medial tibial plateau depression angle, PPTA Posterior proximal tibial angle
  2. aP < 0.05 compared to that before TCVO
  3. bP < 0.05 compared to that before HTO
  4. cP < 0.05 compared to that 24 months after TCVO