Fig. 3

Anatomic observation and scores of the knee joint. a Anatomic observation of knee cartilage and meniscus implant (arrows indicate the cartilage injury). b Lysholm score, the PTH + BMSCs–scaffold group presented better knee joint function than the BMSCs–scaffold group. c ICRS score, the cartilage defect degree of the femoral condyle and tibial plateau extent in the PTH + BMSCs–scaffold group was less than that in the BMSCs–scaffold group and showed no significant difference with that in the Sham group (*P < 0.05, **P < 0.01)