Hypoxia-Induced Mesenchymal Stem Cells Exhibit Stronger Tenogenic Differentiation Capacities and Promote Patellar Tendon Repair in Rabbits

Figure 2

Surgical procedure for the patellar tendon injury model and the gross observation of specimen at 4 weeks after surgery. (a) Exposure of the patellar tendon. (b) Preparation of the middle part of patellar tendon. (c) Retraction of the broken end after severing the middle part of the patellar tendon. (d) Sutures after implanting BMSCs. (e–h) Gross observation of the PBS group (e), the normoxia group (f), the hypoxia group (g), and the control (normal) group (h).

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