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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 7 Biomechanical findings at 56th postoperative day

From: Effectiveness of synthetic hydroxyapatite versus Persian Gulf coral in an animal model of long bone defect reconstruction

Three-point bending test criteria

Mean ± SEM

Control (n = 6)

Coral (n = 6)

Hydroxyapatite (n = 6)

Normal limb

Treated limb

Normal limb

Treated limb

Normal limb

Treated limb

Ultimate strength (N)

66.8 ± 10.5a

38.6 ± 7.5

63.6 ± 14.5

53.16 ± 9.5

60.6 ± 10.5

70.8 ± 8.4b

Stress (N/mm2)

3.64 ± 0.7

2.18 ± 0.3

3.49 ± 1.1

2.43 ± 0.43

4.1 ± 0.83

3.75 ± 0.71

Stiffness (N/mm)

128.3 ± 7.4c

91.6 ± 14.9

133.3 ± 13.5

88.0 ± 14.9

96.0 ± 11.6

75.0 ± 5.6

Strain (%)

7.9 ± 0.5

8.4 ± 0.6

8.35 ± 0.7

9.3 ± 0.84

7.1 ± 1.1

6.7 ± 0.80

  1. aP = 0.01 (normal limb compared with treated limb in control group by Student t test)
  2. bP = 0.05 (treated limb compared with treated limb in control group by one-way ANOVA test)
  3. cP = 0.04 (normal limb compared with treated limb in control group by Student t test)