S85.01 Laceration of popliteal artery

Name of the Condition

• Laceration of popliteal artery

Summary

A laceration of the popliteal artery refers to a tear or cut in the blood vessel located behind the knee, often resulting from trauma. This injury disrupts blood flow and may lead to complications such as ischemia, hemorrhage, or limb-threatening damage, requiring immediate medical attention.

Causes

Direct trauma to the popliteal region, such as from penetrating injuries, blunt force, or fractures. Common mechanisms include motor vehicle accidents, falls, or sports-related injuries. Iatrogenic injury during surgical procedures near the popliteal fossa may also occur.

Risk Factors

• High-impact activities or occupations with knee exposure to injury.
• Preexisting vascular conditions that weaken arterial walls.
• Advanced age, which may reduce tissue elasticity.
• Use of anticoagulant medications increasing bleeding risk.

Symptoms

• Sudden pain or swelling behind the knee.
• Weak or absent pulses in the lower leg.
• Coolness, pallor, or numbness in the affected foot or toes.
• Visible bruising or hematoma in the popliteal area.
• Difficulty bearing weight or moving the knee.

Diagnosis

Physical examination to assess pulses, skin temperature, and sensory function. Doppler ultrasound or angiography to evaluate blood flow and identify vessel damage. CT angiography or MRI may be used to assess associated injuries.

Treatment Options

Surgical repair of the lacerated artery, often involving vascular reconstruction or bypass. Hemorrhage control and stabilization of the patient. Postoperative monitoring for complications such as infection or thrombosis.

Prognosis and Follow-Up

Prognosis depends on the extent of injury, promptness of treatment, and presence of comorbidities. Follow-up includes monitoring for signs of ischemia, wound healing, and vascular function. Long-term surveillance may be needed to assess for complications like aneurysm or stenosis.

Complications

Ischemia or limb loss due to reduced blood flow. Hemorrhage or hematoma formation. Infection at the injury site. Thrombosis or pseudoaneurysm development. Chronic pain or functional impairment.

Lifestyle & Prevention

Avoid high-risk activities without proper protection. Use protective gear during sports or work involving knee trauma. Maintain vascular health through regular exercise and a balanced diet. Manage anticoagulant use under medical supervision.

When to Seek Professional Help

Seek immediate care for severe knee pain, swelling, or visible bleeding. Contact a healthcare provider if pulses in the foot are weak or absent, or if numbness, coldness, or discoloration occurs. Prompt evaluation is critical to prevent limb loss.

Tips for Medical Coders

Code S85.01 is specific to a laceration of the popliteal artery. Documentation should specify the nature of the injury (e.g., penetrating vs. blunt) and any associated complications. Ensure the injury is clearly linked to the popliteal artery and not other structures.