Table 1. The clinical characteristics of OA patients.

Patient number	Age	Gender	Grade of cartilage degeneration	Duration of disease	Osteophyte formation	Dysfunction of joint
1	77	female	moderate OA	>20 years	+	moderate
2	75	female	moderate OA	∼10 years	+	moderate
3	74	female	severe OA	>20 years	+++	severe
4	66	female	severe OA	∼10 years	+++	severe
5	78	male	severe OA	>20 years	+++	severe