Chronic venous insufficiency (CVI) and varicose veins are disorders of venous return in the lower limbs. The venous valves that normally prevent backflow become incompetent, causing blood to pool in the veins of the lower leg. This pooling causes progressive oedema (swelling), aching, heaviness, and in advanced cases, skin changes and venous ulceration. CVI is more common than many people appreciate: it affects approximately 30-50% of adults to some degree.
How CVI Affects Walking
CVI creates several walking-related problems:
- Oedema and weight: Significant lower limb oedema increases the effective weight of the legs per step. Bilateral ankle oedema of 1.5-2.5L per leg is not uncommon in moderate CVI -- this represents 1.5-2.5kg of fluid per leg, substantially increasing the muscular work required per step
- Discomfort and heaviness: The characteristic venous heaviness and aching worsens with prolonged standing and walking and improves with limb elevation. This progressively limits walking duration as the day advances
- Reduced ankle range of motion: In advanced CVI (CEAP class C4-C6), skin and subcutaneous tissue fibrosis (lipodermatosclerosis) can restrict ankle dorsiflexion range, affecting normal gait mechanics
- Venous claudication: In severe deep vein obstruction, walking causes a diffuse bursting pain in the leg (distinct from arterial claudication) that forces cessation
CVI and the Calf Muscle Pump
The calf muscle pump is a critical component of venous return: contraction of the gastrocnemius and soleus during walking squeezes blood from the deep veins of the calf upward against gravity. Walking is actually therapeutic for CVI -- it activates the pump that counters venous pooling. A cane should not be used as a reason to reduce walking; rather, it should be used to allow continued walking beyond the point where venous discomfort would otherwise force a stop.
When a Cane Helps in CVI
A cane is most useful in CVI when:
- Secondary musculoskeletal conditions (knee OA, hip OA, ankle arthritis) coincide with CVI, and the cane addresses the musculoskeletal limitation while allowing the walking that benefits venous function
- Advanced CVI with lipodermatosclerotic ankle stiffness affects gait mechanics, and the cane provides compensatory stability
- Venous ulcer pain during walking limits ambulation to below the therapeutic level
Compression First, Then Cane If Needed
The primary treatment for CVI is compression hosiery (20-40mmHg graduated compression). Compression materially reduces oedema, heaviness, and claudication symptoms -- and thereby reduces the degree to which CVI limits walking. For many CVI patients, adequate compression eliminates the need for a cane entirely. A cane should be considered only after compression has been optimised and walking limitation persists.
CEAP Classification and Mobility
| CEAP Class | Clinical Description | Mobility Impact | Cane Relevance |
|---|---|---|---|
| C0-C1 | No visible signs or telangiectasias | None | Not relevant |
| C2-C3 | Varicose veins, oedema | Heaviness, end-of-day fatigue | Low -- compression first |
| C4 | Skin changes (lipodermatosclerosis) | Ankle stiffness, significant heaviness | Consider if ankle ROM affected |
| C5-C6 | Healed or active ulcer | Pain, wound management | May help if ulcer pain limits walking |
View the full DaiWalk cane range. Related: Walking Cane for Heart Failure | Walking Cane for Peripheral Arterial Disease
