Skip to main content

Table 2 Table 2 The median percentages cement at 1, 3 and 5 mm beneath the tibial tray

From: Reliability of two different measuring techniques with computer tomography for penetration and distribution of cement in the proximal tibia after total knee arthroplasty

Distance beneath tibial trayQuadrantObserver 1
first measurement
% surface cementa
Observer 1
second measurement
% surface cementa
Observer 2% surface cementa
  Median [IQR]Median [IQR]Median [IQR]
1 mm*AM86.37 [80.87–91.56]86.56 [77.50–91.87]86.24 [77.03–91.93]
AL88.06 [80.87–91.56]88.08 [80.47–91.42]88.47 [80.72–91.72]
PM85.19 [78.76–91.29]85.21 [78.09–91.25]85.25 [78.59–90.84]
PL81.95 [73.46–87.73]82.45 [72.91–88.06]81.99 [72.50–88.03]
3 mm#AM39.83 [21.96–53.94]39.19 [22.72–55.58]38.41 [22.27–53.34]
AL53.75 [36.71–66.84]53.21 [35.76–68.46]54.34 [37.13–68.31]
PM45.76 [24.17–60.07]46.08 [25.14–58.30]44.95 [24.96–60.77]
PL52.10 [37.64–63.28]51.86 [36.58–62.26]52.84 [36.41–64.14]
5 mm¥AM15.07 [11.55–21.98]15.72 [11.17–19.39]14.94 [10.80–20.85]
AL21.86 [14.79–40.07]22.27 [15.74–39.52]21.97 [15.89–40.71]
PM17.31 [13.44–29.62]17.49 [13.03–28.50]17.59 [13.95–27.59]
PL24.80 [16.88–39.25]25.54 [16.99–38.87]25.49 [17.05–39.54]
  1. AM Antero-medial, AL Antero-lateral, PM Postero-medial, PL Postero-lateral
  2. a % Surface cement = percentage of trabecular bone surface that is filled with cement
  3. *Distribution over the quadrants was equal (p = 0.076)
  4. #Distribution over the quadrants was not equal (p = 0.006). Post hoc analysis with a Bonferroni adjustment revealed differences between AM and PL (p = 0.025) and between AM and AL (p = 0.012)
  5. ¥Distribution over the quadrants was not equal (p < 0.001). Post hoc analysis with a Bonferroni adjustment revealed differences between AM and PL (p < 0.001) and between AM and AL (p = 0.005)