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. 2017 Apr 18;12:60. doi: 10.1186/s13018-017-0561-8

Table 2.

The number of blood vessels in the tendon–bone interface

Group n (sum of femur and tibia) The number of blood vessels P
Negative pressure 42 15.21 ± 1.36 0.000
Control 36 9.29 ± 1.97