['ɑːrˈθraɪtɪs]

noun

a medical condition causing pain and stiffness in the joints, often leading to inflammation and difficulty with movement.

用法：Arthritis (or arthrosis) is a term used to describe over 100 different types of joint diseases that cause pain, stiffness, and swelling in the joints. The most common types of arthritis are osteoarthritis, rheumatoid arthritis, and psoriatic arthritis.

例句：

1. My grandmother suffers from severe arthritis in her knees and has trouble walking.

我祖母患有严重的膝关节炎，走路有困难。

2. Arthritis can affect people of all ages, but it is more common among older adults.

关节炎可以影响各个年龄段的人，但在老年人中更为常见。

3. The doctor prescribed medication to help manage the symptoms of my arthritis.

医生开了药方来帮助我的关节炎症状。

4. Regular exercise can help improve joint mobility for those with arthritis.

定期运动可以帮助改善关节炎患者的关节活动性。

5. My friend uses a cane to help her walk due to her arthritis affecting her hips.

我的朋友因为髋关节受到关节炎影响而使用拐杖来帮助行走。

同义词及用法：

1. Osteoarthritis (noun): a type of arthritis that occurs when the protective cartilage on the ends of your bones wears down over time.

用法：Osteoarthritis is the most common type of arthritis, often affecting the hands, knees, hips, and spine.

2. Rheumatoid arthritis (noun): a chronic inflammatory disorder affecting many joints, including those in the hands and feet.

用法：Rheumatoid arthritis is an autoimmune disease that can cause joint pain, stiffness, and swelling.

3. Psoriatic arthritis (noun): a form of arthritis that affects some people who have psoriasis – a condition that features red patches of skin ped with silvery scales.

用法：People with psoriatic arthritis may experience joint pain, stiffness, and swelling along with skin symptoms of psoriasis.

编辑总结：

Arthritis is a common medical condition that affects the joints and can cause pain, stiffness, and inflammation. It can be caused by various factors such as age, genetics, or autoimmune disorders. There are over 100 different types of arthritis, but the most common ones include osteoarthritis, rheumatoid arthritis, and psoriatic arthritis. Treatment for arthritis may include medication to manage symptoms or physical therapy to improve joint mobility. It is important to consult with a doctor if you experience any symptoms of arthritis to receive proper diagnosis and treatment.