Skip to main content

Table 1 Morphometric parameters evaluated in the defect area after different periods of time

From: Effects of microcurrent stimulation on Hyaline cartilage repair in immature male rats (Rattus norvegicus)

Parameter Time Control group Treated group
  7d 2.5 ± 1.1 2.9 ± 1.8
Lesion reduction (%) 21d 31.8 ± 10.6 36.4 ± 9.8
  35d 44.5 ± 11.8 49.8 ± 13.7
  7d 23.4 ± 6.9 33.2 ± 7.8* p=0,048
Fibroblastic cells 21d 47.4 ± 7.3 60.6 ± 8.1* p=0,041
(n/104 μm2) 35d 91.5 ± 12.8 107.8 ± 10.7* p=0,036
  7d 37.4 ± 5.9 84.2 ± 9.8* p=0,021
Granulocytes 21d 38.4 ± 7.3 54.6 ± 8.1* p=0,042
(n/104 μm2) 35d 18.5 ± 3.8 19.8 ± 4.7
  7d 47.4 ± 11.9 44.2 ± 9.8
Birefringent collagen fibers 21d 48.4 ± 9.3 47.6 ± 8.1
(%) 35d 87.5 ± 7.8 69.3 ± 9.7* p=0,045
  7d 39.4 ± 10.9 41.2 ± 12.1
Collagen fibril diameter 21d 40.4 ± 12.3 41.6 ± 12.6
(nm) 35d 40.9 ± 11.8 42.3 ± 13.7
  7d 3.4 ± 1.9 4.2 ± 1.1
Stained proteoglycans 21d 4.1 ± 1.7 7.6 ± 2.2* p=0,037
(n/25 μm2) 35d 9.9 ± 2.8 14.2 ± 1.7* p=0,039
  1. Measurements were obtained from samples collected on day 7 (7d), day 21 (21d), and day 35 (35d) after experimental injury. Three samples per animal were collected from the central region of the defect. Values are reported as the mean and standard deviation of each group and were compared by ANOVA and the Tukey post-test . * Significantly different from control (p < 0.05).