Table 9.

Overview of Study Characteristics, Patient Characteristics, and Outcomes for Chondrogenesis-Inducing Techniques^a

No. of studies	9b
No. of patients	225
Study type, n
Retrospective case series	2
Prospective case series	3
Prospective cohort studies	2
Prospective comparative studies	1
Retrospective comparative studies	1
Follow-up duration,c mo	8-60
Defects (n = 146), n (%)
Primary	114 (78)
Secondary	32 (22)
Berndt and Harty classification (n = 50), n (%)
Stage III/IVd	50 (100)
RTS rate (n = 79),c mean (95% CI), %	64-92 (39-98)
RTS rate to preinjury level (n = 49),c mean (95% CI), %	43-92 (16-98)
Time to RTSc	N/A

^aN/A, not available; RTS, return to sports.

^bReferences 8, 11, 25, 35, 42, 54, 62, 71, 74, 87.

^cRange of means of original data.

^dNot further specified in studies.