Nursing Field Notes / Musculoskeletal · Med-Surg Course

Rheumatoid Arthritis 🖐️

RA — Chronic Autoimmune Joint Disease

NG-163 Musculoskeletal · Group D ADHD-friendly visual edition

RA is an autoimmune disorder — the body attacks its OWN joints, causing major inflammation & deformity. Mainly the small hand joints, but it's systemic — it can hit the skin, eyes, and lungs too. Bilateral. Symmetric. Body-wide.

📄 Simple Nursing original — opens in Drive →

🧬 Autoimmune, not wear-and-tearThe immune system attacks the synovium — that's what separates RA from osteoarthritis (OA).

🖐️ Symmetric & small jointsBoth hands, same joints, at the same time — the hallmark pattern.

⏱️ Morning stiffness >30–60 minOA stiffness is <30 min and gets better fast. RA stiffness lingers.

🧪 RF · anti-CCP · ESR · CRPAll UP in active RA — inflammatory markers, not just a mechanical joint problem.

🧨

CAUSE

STEP 1 · THE IMMUNE ATTACK

The body mistakes its own joint lining for a threat — and the attack doesn't stay in the joint.

🧬 Autoimmune attack on the synovium

RA is thought to be an autoimmune disorder — the immune system targets the synovium (joint lining), causing chronic inflammation. Over time inflamed synovial tissue thickens into pannus, which erodes cartilage and bone — this is what produces the classic hand deformities.

🧠 "Pannus eats the joint." Pannus = the overgrown, angry synovial tissue that literally chews through cartilage and bone — that's why RA damage is often irreversible if untreated.

🌍 It's systemic — not just joints

Because RA is an autoimmune, body-wide disease, it can cause collateral damage in:

🖐️ Joints — mainly small hand joints
🩹 Skin — rheumatoid nodules
👁️ Eyes — dryness, scleritis
🫁 Lungs — pulmonary nodules/fibrosis

🧠 RA is systemic; OA is not — this is the single highest-yield line examiners quote directly.

⚠️ Risk factors

👩 Female sex — much higher incidence
🧬 Genetic susceptibility (family history)
🚬 Smoking
🎂 Peak onset ages 30–60

🧠 RA doesn't "wear out" a joint — it attacks one. Wear-and-tear thinking belongs to osteoarthritis, not RA.

🔎

CLUES

STEP 2 · SPOT THE PATTERN

Symmetric small-joint pain, systemic symptoms, stiffness that lingers, and the labs that confirm it.

🖐️ Signature pattern: symmetric, small joints, systemic

Early signs	What they mean
Fatigue, anorexia, weight loss	Systemic inflammatory symptoms — the whole body is involved
Symmetrical pain & swelling, small joints of the hands	Classic RA distribution — both hands, same joints
Morning joint stiffness	Lasts >30–60 min — inflammatory, not mechanical
Low-grade fever	Systemic inflammation marker

🧠 "RA is a mirror." Whatever happens to one hand happens to the other — symmetry is the tell.

⏱️ RA vs OA morning stiffness — do NOT mix these up

Rheumatoid Arthritis	Osteoarthritis (see NG-168)
Autoimmune — systemic	Wear-and-tear — local
Stiffness >30–60 min	Stiffness <30 min
Symmetric, small joints (hands)	Asymmetric, weight-bearing joints (knees, hips)
Fatigue, low-grade fever, nodules	No systemic symptoms

🧠 "Long stiff = autoimmune gift; short stiff = joints that just got stiff from use." If the question says stiffness lasting over an hour, think RA — not OA.

🖐️ Classic hand deformities

🧠 "Swan reaches UP, buttonhole caves IN." A swan's neck curves up and out; a boutonniere (buttonhole) sinks the middle joint in.

🧪 Labs — all trend UP in active RA

🧠 "RF and anti-CCP point AT RA; ESR and CRP just say something's inflamed." Anti-CCP is the more RA-specific antibody test.

🔬 Diagnostics

Synovial fluid aspiration — analyzes joint fluid for inflammation
Arthroscopy — direct visualization when X-ray/MRI are inconclusive
Blood tests: RF (rheumatoid factor), ESR, CRP — plus anti-CCP for higher specificity

🧠 Confirming RA takes labs + imaging + fluid analysis together — no single test rules it in or out alone.

🩺

CARE

STEP 3 · PROTECT THE JOINT

Heat and cold, low-impact movement, a medication ladder that ends in DMARDs, and one classic "never."

💊 Medication ladder — symptom control → disease control

NSAIDs — pain/inflammation relief, does not slow disease

Steroids — the "-sone" drugs, e.g. prednisone, for flares/bridge therapy

DMARDs — methotrexate first-line; see the DMARDs page (NG-114) for full dosing & safety

🧠 "NSAIDs and steroids calm the fire; DMARDs put it out." Only DMARDs actually modify/slow the disease course.

🔥❄️ Heat & cold, alternated

Alternate applying heat and cold to affected joints
Low-impact exercise — swimming is ideal (non-weight-bearing)
Warm shower or bath before bed to ease morning stiffness

🧠 "Heat loosens, cold calms." Heat before activity to loosen stiff joints; cold after activity to calm an inflamed one.

🚨 Classic never: don't prop the knees

Do NOT elevate the knees with pillows at night — it feels comfortable in the moment but encourages flexion contractures, permanently limiting extension over time.

🧠 Comfortable now ≠ safe long-term — a flexed knee that never extends fully is a permanent mobility loss.

🎯 Whole-person care plan

Assess and treat pain levels regularly
Pain relief WITH activity, but MORE pain at rest — expect this pattern in RA, unlike OA where activity worsens pain
Watch for joint contractures from prolonged immobility
Coordinate PT/OT for joint protection and adaptive devices

🧠 "Rusty hinge rule." RA joints hurt more at rest and loosen with gentle motion — like a rusty hinge that eases once it starts moving.

⚡

QUICK RECALL

SAY IT OUT LOUD

🧬 Autoimmune & systemicRA attacks the synovium and can hit skin, eyes, lungs

🖐️ Symmetric small jointsplus stiffness lasting >30–60 min

🧪 RF, anti-CCP, ESR, CRPall elevated in active disease

🚫 No pillow under the knees= prevents flexion contracture

🎯 Cover & check — 4 rapid-fire questions

Q1: What is the key difference between RA and osteoarthritis?

RA is a systemic autoimmune disease; osteoarthritis is a local wear-and-tear disease. RA morning stiffness lasts >30–60 min vs OA's <30 min.

Q2: What labs confirm rheumatoid arthritis?

RF (rheumatoid factor) and anti-CCP (more RA-specific), plus ESR and CRP for general inflammation — alongside synovial fluid aspiration and arthroscopy.

Q3: Why should you never put a pillow under an RA patient's knees at night?

It promotes flexion contracture — the knee loses the ability to fully extend over time.

Q4: What's the first-line DMARD for RA, and why is it added?

Methotrexate — added when NSAIDs/anti-inflammatories alone can't control pain and immobility; DMARDs slow the actual disease process, not just symptoms.