Table 1.

Demographics of study groups

Group	Number	Age (years)	Gender	Lesion size (cm²)	Type of injury/diagnosis
Lesion	14	39	Female	3	Sports-related trauma
Lesion	16	39	Male	4	Work-related trauma
Lesion	19	17	Male	6	Osteochondritis dissecans
Lesion	21	47	Male	10	Work-related trauma
Lesion	26	17	Male	12	Osteochondritis dissecans
Lesion	27	40	Male	3	Trauma, partial ACL rupture
Lesion	28	34	Male	3	Osteochondritis dissecans
Lesion	31	29	Male	20	Osteochondritis dissecans
Lesion	35	17	Female	12	Unknown trauma
Lesion	36	43	Female	22	Osteoarthritis
Control	1004	41	Male		Ruptured medial meniscus; ACL rupture
Control	1007	27	Male		Ruptured medial meniscus
Control	1009	36	Female		ACL rupture; ruptured medial meniscus
Control	1010	20	Male		Infrapatellar fat pad syndrome and medial plica
Control	1012	33	Male		Medial plica
Control	1013	22	Male		Ruptured lateral meniscus
Control	1018	25	Female		Knee pain, medial plica
Control	1019	32	Female		Knee pain
Control	1021	21	Male		Ruptured medial meniscus
Control	1022	36	Female		Synovial plica
Control	1026	39	Male		Ruptured lateral meniscus
Control	1031	32	Male		Ruptured medial meniscus
Control	1035	43	Male		Ruptured medial meniscus
Control	79	19	Male		Cartilage lesion of the ankle (knee arthroscopy for cartilage biopsy)
Control	70	21	Male		Cartilage lesion of the opposite knee (knee arthroscopy for cartilage biopsy)