From: The clinical efficacy of arthroscopic therapy with knee infrapatellar fat pad cell concentrates in treating knee cartilage lesion: a prospective, randomized, and controlled study
Total cells ( × 108)
Stem cells ( × 106)
Percentage (%)
Cell concentrates
1.19 ± 1.17
3.91 ± 2.96
4.38 ± 2.29