In Vivo Evaluation of Different Collagen Scaffolds in an Achilles Tendon Defect Model

Table 4

Biomechanical data (mean ± standard deviation) of the Achilles tendon defects treated with collagen scaffolds after 28 days postoperatively compared to native tendons. Sample sizes: native) n = 4; Test Material) total: n = 7, not failed: n = 4, failed: n = 3; Control Material) total: n = 8, not failed: n = 6, failed: n = 2. p < 0.01.

	Test Material	Control Material	Native Tendon
Failure load (N)
total	54.5 ± 16.4	63.1 ± 19.5	76.6 ± 11.6
not failed	55,7 ± 18.7	67.7 ± 20.2
failed	52.9 ± 16.7	49.2 ± 10.3
Stiffness (N/mm)
total	9.0 ± 2.8	10.7 ± 2.7	20.2 ± 6.6
not failed	8.6 ± 1.8	11.1 ± 2.5
failed	9.6 ± 4.3	9.4 ± 4.0
Tear strength (N/mm^2)
total	2.5 ± 0.8	2.8 ± 1.0	13.3 ± 5.9
not failed	2.2 ± 0.9	2.9 ± 1.2
failed	2.8 ± 06	2.6 ± 0.5