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類風濕性關節炎 Rheumatoid Arthritis


類風濕關節炎是一種自身免疫系統異常的慢性炎性關節疾病。疾病可引致關節出現痛楚、腫脹、變形和僵硬。患者的活動能力有機會大受影響,對他們的整體健康以至生活質素,帶來不能逆轉的傷害。該病在香港的患病率為0.35%,比其他已發展城市低(0.5-1.0%)(1)。 統計發現,30至50歲屬於類風濕性關節炎的患病高峰期,而女性比男性患上此病機會高約三倍。






類風濕關節炎的藥物治療上,改善病情抗風濕藥(DMARDs)是常用的口服藥物(3)。甲氨蝶呤是一種類似葉酸的抗代謝物質,可抑制二氫葉酸還原酶以抑制 DNA 的合成,從而抑制細胞生長。甲氨蝶呤針對下肢的常見副作用包括下肢水腫,延長足部傷口癒合進度,以及增加感染風險等等。


足病診療師對於類風濕關節炎的治療主要是減低患者足部痛楚,以及保護足部皮膚、診治足部潰瘍和提供鞋墊治療,從而減低足部受類風濕關節炎的影響。足病診療師可根據個別患者需要而設計及提供特別鞋墊,從而減低腳底的壓力和磨擦 (3)。如類風濕關節炎患者出現因足部關節變型的厚繭硬皮,甚至足部足部潰瘍情況,足病診療師可替患者進行傷口檢查,以及提供適切的護理建議:使用外用敷料,藥膏,甚或進行輔作療法,務求減低傷口感染機會和促進傷口復元。



(此資訊由 Lam Tsz Ho 會員撰寫)


Rheumatoid arthritis, a.k.a RA, is a chronic autoimmune and inflammatory condition that causes pain, swelling, deformities and stiffness in joints. The functional ability of RA patients could be affected significantly, thus it might lead to irreversible damages. In Hong Kong, it affects around 0.35% of the population, which is lower than that of other developed cities i.e. 0.5-1.0% (1). Statistics show that RA generally starts at the age of 30-50. Women are 3 times more likely to be diagnosed with RA than men.


The pathogenesis of RA consists of multiple genetic, environmental and immunologic factors (1). The etiology is uncertain and the trigger adaptive responses and interactions can undergo long before the onset of clinical symptoms. For RA patients, their immune systems mistakenly attack their own healthy cells.

Clinical Presentations

Although any synovial joints in the body can be affected by RA, it usually affects the patient’s hands, feet and their wrists (2). Joint pain, joint swelling, toe deformities, plantar hyperkeratosis formation or even ulcerations and infections are some of the common presentations of RA feet. With RA, there are times when the symptoms get more serious, known as flares, and also times when the symptoms get milder, which is called remission.

RA-related medications and its manifestation to RA feet

RA patients are usually offered a combination of DMARDs (Disease modifying anti-rheumatic drugs) as a first-line treatment. Methotrexate is one of the common medications prescribed and it works by blocking the effects of chemicals released when the patients’ immune cells attack their own joints. However, this medication may potentially cause some side effects such as lower limb swelling and prolonged healing for foot and ankle ulcerations as it might increase vulnerability to damages and infections.

Role of podiatrists

The podiatrist role is here to provide timely clinical management for RA patients with various foot and ankle disorders. Clinical management includes identifying and treating the foot-related pain, skin care, ulceration care and providing insoles therapy if applicable (3). There are various types of insoles and orthotics that can be fitted into the shoes to relieve pressure and reduce friction for the feet. For RA patients who are suffering from joint deformities and foot ulcerations, the podiatrists are here to closely assess the wounds and provide suitable management.


It can be hard to deal with a chronic disease like rheumatoid arthritis. However, multidisciplinary team care could give the best care to RA patients. With podiatry care, the quality of life of them could be much improved. Please speak to your healthcare team if you are struggling to deal with your condition.

(This article is written by member Lam Tsz Ho)


2. Rheumatoid arthritis (RA) [Internet]. 2020 [cited 2023 Jan 13]. Available from:

3. Rheumatoid arthritis - treatment. Rheumatology (Oxford) [Internet]. 1997 [cited 2023 Feb 20];36(suppl_1):174–93. Available from:

4. Podiatrist [Internet]. NRAS. National Rheumatoid Arthritis Society (NRAS); 2020 [cited 2023 Jan 13]. Available from:


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