Systemic sclerosis (SSc, commonly called scleroderma) is a multisystem autoimmune connective tissue disease characterised by fibrosis of the skin and internal organs. Its mobility implications are diverse and intersecting: musculoskeletal involvement is common, and pulmonary and cardiac complications add an exertional limitation that compresses activity capacity from a different direction.
How SSc Affects Mobility
Arthritis and articular involvement: Synovitis, joint contractures, and tendon involvement in SSc can affect lower limb joints, though this is less prominent than in RA or lupus. The wrists, fingers, and ankles are frequently affected by tendon friction rubs and contractures.
Skin fibrosis and reduced limb flexibility: Skin thickening and fibrosis in diffuse cutaneous SSc reduces flexibility of the distal limbs. Ankle and foot skin involvement can restrict the range of motion available during walking and change how the foot contacts the ground during the gait cycle.
Raynaud phenomenon: SSc almost universally involves severe Raynaud. As covered in the Raynaud-specific article, this affects grip during cold conditions -- relevant for cane users. The severity of SSc-associated Raynaud significantly exceeds that of primary Raynaud and may include digital ulcers that further limit grip.
Pulmonary complications: Interstitial lung disease (ILD) and pulmonary arterial hypertension (PAH) are serious SSc complications that reduce exercise capacity through gas exchange impairment and reduced cardiac output respectively. Walking-induced breathlessness in SSc with pulmonary involvement is mechanistically similar to COPD and heart failure -- the cardiovascular-pulmonary ceiling limits walking duration and speed independently of musculoskeletal involvement.
Calcinosis: Calcium deposits in soft tissues, particularly at pressure points and periarticular areas, can cause focal pain that affects weight distribution during walking.
The Cumulative Effect
The challenge in SSc is that multiple impairments are simultaneously present. A patient with SSc may have ankle contracture reducing gait flexibility, Raynaud impairing grip, and ILD limiting exercise tolerance -- all at the same time. The cane cannot address all of these simultaneously, but it can address the most functionally limiting one directly.
When to Use a Cane in SSc
| Dominant Symptom | Cane Function | Additional Considerations |
|---|---|---|
| Lower limb arthritis or contracture | Load reduction, compensate for restricted ROM | Height adjustment for altered gait pattern |
| Pulmonary (ILD/PAH) | Energy conservation per step | NYHA-equivalent functional assessment |
| Raynaud (severe, with digital ulcers) | Balance support -- but grip severely limited | Forearm crutch may be more appropriate |
| Combined musculoskeletal + pulmonary | Both load reduction and energy conservation | Lightweight shaft essential |
Handle Selection with SSc Hand Involvement
SSc commonly affects hands with skin thickening, Raynaud, and digital contractures. This may severely limit grip. As discussed in the article on cane handles for hand conditions, a forearm crutch (transferring load to the forearm rather than the hand) may be more appropriate than a standard cane handle when finger and hand involvement is severe. For milder hand involvement, the Anatomic Grip reduces sustained finger force required.
View the full DaiWalk cane range. Related: Walking Cane for Raynaud | Walking Cane for COPD
