Rheumatoid arthritis (RA) affects the foot and ankle in approximately 90% of patients over the disease course — and the foot is the initial site of disease in nearly 20% of cases. Yet podiatric care is often overlooked in RA management until deformity is advanced and structural damage has become difficult to reverse. Early podiatric involvement — coordinated with rheumatologic treatment — can preserve foot function, reduce pain, and prevent the progressive deformities that significantly diminish quality of life in RA patients.

How RA Affects the Foot

RA is a systemic autoimmune disease in which the immune system attacks synovial joint tissue. In the foot, this produces:

• Metatarsophalangeal (MTP) joint synovitis: The most common early RA foot finding — swelling, morning stiffness, and pain at the forefoot MTP joints, particularly MTP 2–5. The MTP joints typically show the characteristic “squeeze test” tenderness (transverse metatarsal compression pain) in early RA.
• Progressive deformity: Chronic synovitis stretches and eventually destroys the periarticular ligaments and tendons — producing hallux valgus, hammertoes, plantar metatarsal head subluxation, and forefoot widening
• Hindfoot involvement: Posterior tibial tendon involvement produces adult flatfoot deformity; subtalar synovitis causes hindfoot pain and stiffness
• Ankle arthritis: Late manifestation — produces progressive ankle pain, stiffness, and valgus deformity
• Nodules and bursae: Rheumatoid nodules over bony prominences create additional pressure points and skin breakdown risk

Conservative Management

Podiatric conservative management for RA focuses on reducing joint loading and accommodating deformity:

• Custom orthotics: Metatarsal pads, total-contact insoles, and MTP offloading devices reduce the forefoot pressure that drives metatarsal head pain — the primary functional complaint in most RA foot patients
• Accommodative footwear: Extra-depth shoes with wide toe boxes accommodate the widened, deformed RA forefoot without creating additional pressure points
• Intra-articular cortisone injections: Ultrasound-guided injections into actively inflamed MTP joints, subtalar joint, or ankle reduce acute synovitis burden and provide meaningful symptomatic relief — complementing systemic DMARDs
• Ankle-foot orthoses (AFOs): For advanced hindfoot or ankle involvement with instability

Surgical Management

When conservative management is insufficient, surgical options are available across the spectrum of RA foot involvement:

• Forefoot reconstruction (pan-metatarsal head resection + hallux MTP fusion) — addresses the diffuse MTP joint destruction of advanced RA forefoot disease
• Hindfoot arthrodesis — subtalar and/or triple arthrodesis for advanced hindfoot arthritis
• Total ankle replacement or ankle arthrodesis — for end-stage ankle arthritis

Importantly, biologic DMARD therapy has substantially reduced the rate of surgical intervention required — patients whose RA is well-controlled with modern treatment experience far less structural progression. Podiatric surgical decisions for RA are always coordinated with the rheumatologist to optimize timing relative to immunosuppressive therapy management.

The Podiatric Role in the RA Care Team

Dr. Biernacki works collaboratively with rheumatologists, primary care physicians, and physical therapists to provide integrated foot and ankle care for RA patients. Regular podiatric surveillance monitors deformity progression, provides conservative intervention before structural damage necessitates surgery, and ensures skin and nail care for patients at elevated infection risk from immunosuppression.

Dr. Tom Biernacki, DPM

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Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.