Avoidance of Total Knee Arthroplasty in Early Osteoarthritis of the Knee with Intra-Articular Implantation of Autologous Activated Peripheral Blood Stem Cells versus Hyaluronic Acid: A Randomized Controlled Trial with Differential Effects of Growth Factor Addition

Table 2

Cartilage pathology (Gr = group; MC = medial condyle; LC = lateral condyle; PF = patellar facies; MUL = multiple locations; N/A = not applicable/available as Gr 3 did not receive any arthroscopic surgery).

	Group 1	Group 2	Group 3
Number (patients)	20	20	20
Kellgren-Lawrence classification Gr 2-3	Gr 2 = 11	Gr 2 = 11	Gr 2 = 11
	Gr 3 = 9	Gr 3 = 9	Gr 3 = 9
Intraoperative location	MC = 9	MC = 8	N/A
	LC = 1	LC = 1
	PF = 3	PF = 3
	MUL = 7	MUL = 8
ICRS classification	III = 12, IV = 8	III = 10, IV = 10	N/A
Size of lesion (cm)	2.5 × 2.7	2.5 × 2.6	N/A