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Table 2 Postoperative parameters

From: Total knee arthroplasty in femoral bowing: does patient specific instrumentation have something to add? A randomized controlled trial

  Conventional (n = 29) PSI (n = 29)  
  Mean (SD) 95% CI Mean (SD) 95% CI p-value
HKA angle (goal = 0°) 4.0 (2.7) 3–5 4.1 (3.1) 2.9–5.2 0.459
CFA, α (goal = 96°) 94.5 (4.2) 93–96 95.1 (4.40) 93.5–96.7 0.298
CTA, β (goal = 90°) 89.4 (1.8) 88.8–90.1 90.2 (2.3) 89.3–91 0.091
SFA, γ (goal = 0° for conventional, 3° for PSI) 3.2 (2.5) 2.3–4.1 5.8 (3.7) 4.5–7.2 0.001
STA, ϕ (goal = 87°) 85.4 (3.3) 84.2–86.6 84.8 (4.5) 83.1–86.4 0.283
PCA (goal = 0°) 1.5 (1.6) 0.9–2.1 1.5 (1.3) 1–2 0.485
Tourniquet time (min) 40 (5.9) 37.9–42.2 46.5 (8.5) 43.4–49.6 0.001
Bleeding (ml) 150 (85.8) 118.8–181.3 162.1 (84.4) 131.4–192.8 0.296
  1. HKA hip-knee-ankle, CFA coronal femoral angle CTA coronal tibial angle SFA sagittal femoral angle STA sagittal tibial angle PCA posterior condylar angle