Table 2.

30 defects scored by three independent blinded observers on outline attachment, area coverage and hydrogel integrity after 30 ​min of knee movement on continues passive motion (CPM) machine.

	1.0 ​cm2	1.5 ​cm2	2.0 ​cm2	Total	ICC
Outline attachment	10/10 (100%)	8/10 (80%)	8/10 (80%)	26/30 (87%)	0.68 (95%CI 0.41–0.83)
Area coverage	10/10 (100%)	9/10 (90%)	9/10 (90%)	28/30 (93%)	0.67 (95%CI 0.39–0.83)
Hydrogel integrity	10/10 (100%)	8/10 (80%)	7/10 (70%)	25/30 (83%)	0.55 (95%CI 0.17–0.77)

Outline attachment: Circumference that is in contact with the surrounding cartilage rim. Area coverage: Total cartilage defect that is covered by scaffold. Hydrogel integrity: Hydrogel free of shape deformities, fissures or cracks. ICC: inter-observer variability of three independent blinded observers on outline attachment, area coverage and hydrogel integrity.