Erratum to: Biotechnol Lett DOI 10.1007/s10529-016-2158-4

In the printed version of this paper, the authors inadvertently made a mistake in the presentation of Fig. 4 of their paper. The correct version of Fig. 4 is given below.

Fig. 4
figure 4

The histological results of control group (a, b) and experimental group (c, d) at 6 (a, c) and 12 weeks (b, d) post-operatively. Arrow heads protruding new bone. HB host bone, IF interface, G autologous Achilles tendon graft. Scale bars 200 μm