Arterial Injury

Modern Study Review (AI-Generated)

High-Yield Summary

Arterial injury in orthopaedic trauma is a limb-threatening emergency requiring prompt diagnosis and intervention to prevent ischemic complications and amputation. Timely revascularization within 6 hours is critical for limb salvage, with outcomes deteriorating sharply beyond 8 hours. Modern management integrates fracture stabilization, vascular repair, and compartment syndrome prevention to optimize functional recovery.

Key Diagnostic Findings

Anatomy

• Major arteries at risk vary by injury location (e.g., femoral, popliteal, brachial arteries).
• Children are more susceptible to arterial spasm, increasing ischemic risk.

Clinical Presentation

• Diminished or absent distal pulses is a cardinal sign; even detectable Doppler signals should be considered abnormal.
• Delayed loss of pulse may occur due to intimal tears causing thrombosis.
• Signs of ischemia: pallor, pain, paralysis, paresthesia, and pulselessness (5 Ps).
• Limb perfusion status guides urgency and diagnostic approach.

Imaging

• Angiography remains the gold standard for localizing arterial injury when limb perfusion is adequate or injury location is unclear.
• In non-perfused limbs with obvious fracture, immediate surgical exploration is preferred over angiography.

Classification Systems

• No universal arterial injury classification is routinely used in clinical practice; management is guided by clinical and imaging findings.

Current Gold Standard Treatment

Non-operative

• Rarely indicated except for minor intimal injuries without ischemia.
• Close monitoring with serial vascular exams and Doppler studies.

Operative Indications and Treatment

• All major arterial injuries require repair to restore limb perfusion.
• Preferred technique: Autogenous vein grafting (usually reversed saphenous vein).
• Temporary vascular shunting may be used if fracture stabilization must precede definitive vascular repair.
• Surgical bone shortening can facilitate tension-free vascular repair; limb length discrepancies addressed later.
• Prophylactic fasciotomy is recommended to prevent compartment syndrome in high-risk injuries.

Modern Complications & Outcomes

Complications

Outcomes

• Limb salvage rates exceed 90% if revascularization occurs within 6 hours.
• Amputation rates rise to 72-90% after 8 hours of ischemia.
• Functional outcomes depend on timely fracture stabilization, vascular repair, and compartment syndrome management.
• Children require special attention due to arterial spasm and higher ischemic risk.

Classic Clinical Notes

Arterial Injury

• Ischemia time of 6 hours is the cutoff: most limbs can be salvaged if revascularization occurs before this; after 8 hours, the amputation rate is between 72% and 90%.
• Intimal tear with subsequent development of thrombosis can lead to a picture of palpable pulses initially that disappear (delayed loss of pulse).
• Children are particularly prone to ischemia and gangrene due to arterial spasm, a rare problem in adults.

Any diminution of pulse, even if the pulse is detectable by Doppler testing, pressure, or palpation, should be considered abnormal.

• All major arterial injuries should be repaired; venous injuries are controversial.
• Autogenous vein grafting is preferred.
• Surgical shortening of the bone may facilitate vascular repair, and leg length can be dealt with later.
• Ideally, fracture stabilization should precede vascular repair – may require temporary shunting; this needs to be decided upon by the surgeons.
• Prophylactic fasciotomy is a good thing!

Doing angiography: the question of whether to do angiography or not depends on the perfusion status of the limb.

• If the limb is perfused adequately, and there is no rush to stabilize the bone, then do the angiogram.
• If the limb is white and non-perfused, then you may as well assume the injury to the artery is at the level of the fracture and just get on with exposing it.
• If the limb is broken at a number of levels and you are unsure where the injury is, get the angio.

Last Updated on January 25, 2026 by orthonet