Compression Stockings on the Uninjured Leg: Limited to No Benefit
In a patient with an isolated leg fracture, applying compression stockings to the contralateral uninjured leg provides minimal to no meaningful benefit for DVT prevention, as the thrombotic risk is overwhelmingly concentrated in the fractured limb itself.
The Evidence on DVT Risk Distribution
The most relevant evidence comes from a retrospective study of 3,253 hip fracture patients that directly examined which leg develops DVT 1. This study found that the additional DVT risk after fracture is essentially confined to the fractured limb, with a six-fold increase in DVT on the fractured side (29.5/1000 patients per year) compared to only a very small non-significant increase on the contralateral leg (6.1/1000 patients per year) 1. The authors concluded there is little justification for the cost and potential risk of using stockings on the contralateral leg 1.
Current Guideline Context
The broader context from recent guidelines actually suggests against routine compression stocking use altogether in DVT prevention:
- The 2020 ASH guidelines recommend against routine use of compression stockings for DVT prevention in patients with established DVT, citing very low certainty evidence for preventing post-thrombotic syndrome 2
- When high-quality trials (like the SOX trial) were isolated, compression stockings showed no benefit for preventing post-thrombotic syndrome (RR 1.01,95% CI 0.76-1.33) or recurrent DVT (RR 1.08,95% CI 0.69-1.71) 2
The Mechanism Argument
While compression stockings theoretically work by increasing venous flow velocity and reducing venous stasis 3, these mechanisms are most relevant to the immobilized or injured limb. The normal, mobile contralateral leg maintains physiologic venous flow and does not share the same pathophysiologic risk factors as the fractured limb.
Practical Considerations
- Potential harms: Discomfort, skin breakdown, allergic reactions, and cost 2
- Patient burden: Applying stockings to the uninjured leg adds no proven benefit while creating additional expense and potential complications
- Resource allocation: Better to focus prophylaxis efforts on systemic anticoagulation if indicated by overall VTE risk assessment
Clinical Recommendation
Do not routinely apply compression stockings to the uninjured contralateral leg in patients with isolated leg fractures. If compression therapy is considered at all (despite weak evidence), it should only be applied to the fractured limb where the actual thrombotic risk exists. Focus DVT prophylaxis on appropriate pharmacologic anticoagulation based on the patient's overall risk profile, surgical timing (within 24-48 hours when indicated), and early mobilization 1.