Table 8.

Overview of Study Characteristics, Patient Characteristics, and Outcomes for Cartilage Implantation^a

No. of studies	8b
No. of patients	171
Study type, n
Prospective case series	4
Retrospective case series	4
Follow-up duration,c mo	20-67
Defects (n = 172), n (%)
Primary	111 (65)
Secondary	61 (35)
Berndt and Harty classification	N/A
RTS rate (n = 118),c mean (95% CI), %	40-100 (15-100)
RTS rate to preinjury level (n = 88),c mean (95% CI), %	6-100 (1-100)
Time to RTSc	N/A

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

^bReferences 3, 4, 9, 12, 23, 24, 51, 55.

^cRange of means of original data.