硬组织就是骨头？

手的骨关节炎

Pain, aching, and stiffness in the hand and three of the following: 

Fewer than three MCP joints swollen 

Hard tissue enlargement of two or more DIP joints 

Hard tissue enlargement of two or more of the following joints: Second and third DIP , second and third PIP , both CMC joints 

Deformity of at least one of the following joints: Second and third DIP , second and third PIP , both CMC joints

手关节疼痛、酸痛和僵硬以及以下三种症状:

1.肿胀的掌指关节关节少于三个

2.两个或两个以上DIP的硬组织增生

3.以下两个或两个以上关节的硬组织增生：第二和第三指的DIP、第二和第三指的PIP、两个腕掌关节

4. 以下至少一个关节畸形：第二和第三指远端指间关节，第二和第三指近端指间关节，两个腕掌关节

CMC，掌骨；DIP，远端指间关节；ESR，血沉；MCP，掌指关节；PIP，近端指间关节。

aching酸痛？Hard tissue 硬组织？骨头？谢谢