arthritolith

例句：

1. 1. He developed a painful arthritis in his knee.
   他的膝盖患上了疼痛的关节炎。
2. 2. The osteoma was removed successfully after several months of treatment.
   经过几个月的治疗，这个骨瘤被成功地切除了。
3. 3. Arthritis is a common condition that affects joints and can cause pain and stiffness.
   关节炎是一种常见的疾病，影响关节并可能导致疼痛和僵硬。