5.3 Lymphedema & Compression Therapy
Key Takeaways
- Lymphedema is classified in stages 0 through 3, progressing from latent (no visible swelling) through reversible pitting (Stage 1), spontaneously irreversible (Stage 2), and fibrotic elephantiasis (Stage 3).
- Complete Decongestive Therapy (CDT) has an intensive phase aimed at volume reduction and a maintenance phase aimed at preserving the new baseline; both rely on the same four components.
- Manual Lymph Drainage (MLD) is initiated by a PT or a Certified Lymphedema Therapist (often CLT-LANA credentialed); the PTA can carry forward MLD-style techniques inside the plan of care when state practice acts and supervision allow.
- Short-stretch compression bandaging is applied distal to proximal with more tension distally to create a pressure gradient that promotes lymph flow.
- Compression garment classes are defined by ankle pressure ranges: Class I about 20-30 mmHg, Class II about 30-40 mmHg, Class III about 40-50 mmHg, and Class IV above 50 mmHg.
Lymphedema Staging
Lymphedema reflects a failure of the lymphatic system to clear interstitial protein and fluid. Stages describe how the tissue itself has changed, not just the volume.
| Stage | Name | Findings |
|---|---|---|
| Stage 0 | Latent | No visible swelling; lymphatic transport is impaired but patient may report heaviness |
| Stage 1 | Reversible (Spontaneously Reversible) | Soft pitting edema that decreases with elevation overnight |
| Stage 2 | Spontaneously Irreversible | Pitting decreases as tissue fibroses; elevation alone no longer resolves swelling; positive Stemmer sign appears |
| Stage 3 | Lymphostatic Elephantiasis | Severe fibrotic, sometimes warty (papillomatosis) tissue; recurrent infection risk; non-pitting |
A positive Stemmer sign — inability to pinch and lift a skin fold at the base of the second toe or finger — is a classic indicator of lymphedema rather than venous edema.
Complete Decongestive Therapy (CDT)
Complete Decongestive Therapy (CDT) is the gold-standard conservative management plan. It has two phases and four components.
Phase 1 — Intensive (decongestive) phase. Daily or near-daily treatment for two to four weeks aiming for maximal volume reduction. Components include:
- Manual Lymph Drainage (MLD) — gentle skin-stretch strokes redirecting lymph toward functioning quadrants
- Short-stretch compression bandaging — multilayer, low-resting/high-working pressure bandaging worn 23 hours per day
- Decongestive exercises — performed inside the bandages or garments to use the muscle pump
- Skin care — meticulous hygiene and moisturization to reduce infection risk
Phase 2 — Maintenance phase. Lifelong self-management with daytime compression garments, nighttime bandaging or specialty night garments, self-MLD, exercise, and skin care.
PTA Scope In Lymphedema
The initial evaluation, MLD treatment plan, and decisions about bandaging pressures and garment specifications are performed by the supervising PT (often a CLT-LANA Certified Lymphedema Therapist). The PTA carries out MLD-style sequencing, applies bandages, fits patients into prescribed garments, monitors limb volume changes, and reinforces home program education within the written plan of care. Any change in skin integrity, suspected cellulitis (sudden warmth, redness, fever), or sudden volume change must be reported back to the supervising PT.
Compression Bandaging Principles
Short-stretch bandages produce low resting pressure (comfortable at rest) and high working pressure (firm when muscles contract). The PTA applies bandages with three rules in mind:
- Distal to proximal — wrap from the fingers or toes toward the trunk so fluid is squeezed centrally.
- More tension distally, less proximally — creates a pressure gradient that prevents backflow and tourniquet effects.
- No wrinkles or gaps — wrinkles concentrate pressure and cause skin breakdown; gaps cause window edema.
Absolute contraindications to compression include acute Deep Vein Thrombosis (DVT), untreated cellulitis or active infection, uncontrolled congestive heart failure, and arterial insufficiency with an Ankle-Brachial Index (ABI) below 0.5. Caution applies when ABI is 0.5 to 0.8.
Compression Garment Classes
Garment classes describe the pressure measured at the ankle (or wrist for upper-extremity sleeves). Higher classes are used for advanced lymphedema or severe venous disease.
| Class | Ankle Pressure | Typical Use |
|---|---|---|
| Class I | About 20-30 mmHg | Mild venous insufficiency, prophylaxis, early lymphedema |
| Class II | About 30-40 mmHg | Moderate venous disease, post-thrombotic syndrome, common starting point for lymphedema maintenance |
| Class III | About 40-50 mmHg | Severe venous disease, established lymphedema |
| Class IV | Above 50 mmHg | Refractory lymphedema; specialist prescribing |
Garments are replaced approximately every 3 to 6 months because elastic recoil degrades with washing and wear. The PTA reinforces the schedule and documents wear and skin condition.
A PTA is wrapping a patient's lower extremity with short-stretch bandages as part of the intensive phase of Complete Decongestive Therapy. Which application principle is most consistent with the plan of care?
A patient with chronic lower-extremity lymphedema arrives for a maintenance-phase session reporting new-onset calf warmth, tenderness, and a low-grade fever. The PTA notes asymmetric calf swelling that was not present at the last visit. What is the most appropriate next action?