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Table 3 Preoperative demographic and radiographic data in knees required for double level osteotomy

From: Potential anatomic risk factors resulting oversized postoperative medial proximal tibial angle after double level osteotomy

 

Correctable (n = 60)

Uncorrectable (n = 41)

P value

Age, y

66.8 ± 8.6 (45 – 84)

65.2 ± 9.0 (48 – 83)

n.s

Height, cm

158.1 ± 8.5 (143.8 – 176.9)

158.2 ± 9.4 (142.0 – 179.0)

n.s

Weight, kg

66.6 ± 11.4 (45.3 – 90.2)

69.2 ± 16.5 (47.7 – 111.7)

n.s

Body mass index, kg/m2

26.6 ± 4.0 (20.0 – 40.2)

27.3 ± 4.1 (20.5 – 35.8)

n.s

Side, left/right

27/33

20/21

n.s

Gender, male/female

21/39

12/29

n.s

Kellgren-Laurence grade 1/2/3/4

0/1/7/52

0/0/2/39

n.s

HKA, °

 − 9.8 ± 3.2 (− 20.8 – − 3.5)

 − 12.2 ± 2.7 (− 19.4 – − 6.6)

 < 0.001

WBL ratio, %

4.1 ± 13.6 (− 36.9 – 32.6)

 − 9.1 ± 12.8 (− 38.7 – 15.0)

 < 0.001

mLDFA, °

89.1 ± 1.7 (86.5 – 93.6)

87.9 ± 1.4 (85.7 – 91.9)

 < 0.001

JLCA, °

5.0 ± 1.2 (2.2 – 7.2)

8.2 ± 1.4 (6.3 – 12.5)

 < 0.001

mMPTA, °

84.3 ± 2.9 (75.4 – 90.1)

83.8 ± 2.4 (79.1 – 88.4)

n.s

  1. Data are presented as means ± standard deviation with the range in parentheses
  2. HKA hip-knee-ankle angle, WBL weight bearing line, mLDFA mechanical lateral distal femoral angle, JLCA joint line convergence angle, mMPTA mechanical medial proximal tibial angle