Table 7 Comparison of width at femoral physis and mechanical axis with reference values [7, 10]

WFP before treatment

Age group

(years)

Reference value

(mm)

eight-Plates^TM

(mm)

RigidTacks^TM

(mm)

8–10

69 (68–70)

66.6 (57.1–70.6)

n=6

69.2 (63.9–75.2)

n=11

11–12

72 (71–73)

69.8 (61.8–77.2)

n=14

75.3 (63.2–88)

n=25

13–14

76 (74–77)

74.8 (64.8–87)

n=11

78.7 (63.8–92.6)

n=20

15–16

76 (74–77)

74.2 (73.1–75.4)

n=3

-

WFP after treatment

Age group

(years)

Reference value

(mm)

eight-Plates^TM

(mm)

RigidTacks^TM

(mm)

8–10

69 (68–70)

69.6 (64.1–75)

n=2

-

11–12

72 (71–73)

66.9

n=1

70.9 (69.1–72.6)

n=2

13–14

76 (74–77)

77.1 (68.4–86.7)

n=9

75.2 (64.2–89.7)

n=18

15–16

76 (74–77)

74.2 (61.6–84.4)

n=19

76.5 (60.7–88.3)

n=22

MAD before treatment

Age group

(years)

Reference value

(mm)

eight-Plates^TM

(mm)

RigidTacks^TM

(mm)

8–10

7 (6.5–7)

6.0 (4.1–7.5)

n=6

6.4 (5.1–7.7)

n=11

11–12

8 (7–8.8)

6.4 (4.3–8.1)

n=14

7.9 (6.1–10.3)

n=25

13–14

9 (7.7–9.7)

7.8 (6.1–10.1)

n=11

8.0 (5.8–11)

n=20

15–16

8 (7.4–8.3)

7.2 (6.6–8.4)

n=3

-

MAD after treatment

Age group

(years)

Reference value

(mm)

eight-Plates^TM

(mm)

RigidTacks^TM

(mm)

8–10

7 (6.5–7)

6.8 (5.8–7.7)

n=2

-

11–12

8 (7–8.8)

9.5

n=1

6.6 (6.1–7.1)

n=2

13–14

9 (7.7–9.7)

7.6 (4.9–9.8)

n=9

8.4 (6.3–13.3)

n=18

15–16

8 (7.4–8.3)

8.0 (2.8–10.7)

n=19

8.7 (6.0–11.5)

n=22