Table 1.

Distribution of implant patterns

Implant pattern (right – left)	6-week model 2 animals 4 knees	12-week model 2 animals 4 knees	24-week model 2 animals 4 knees
Nulla – Gel	Null – Gel	Null – Gel	Null – Gel
(6 animals/12 knees)	Null – Gel	Null – Gel	Null – Gel
Gelb – MSCc	Gel – MSC	Gel – MSC	Gel – MSC
(6 animals/12 knees)	Gel – MSC	Gel – MSC	Gel – MSC
Null – MSC	Null – MSC	Null – MSC	Null – MSC
(6 animals/12 knees)	Null – MSC	Null – MSC	Null – MSC
Total number of each experimantal design Null / Gel / MSC	4 / 4 / 4	4 / 4 / 4	4 / 4 / 4

^aNull: Osteochondral defects without implants.

^bGel: Osteochondral defects implanted with gel alone.

^cMSC: Osteochondral defects implanted with gel incorporated with MSC