S82.862A Displaced Maisonneuve's fracture of left leg, initial encounter for closed fracture

Name of the Condition

• Displaced Maisonneuve's fracture of left leg, initial encounter for closed fracture

Summary

This condition involves a specific type of ankle injury characterized by a displaced fracture of the proximal fibula (upper portion of the smaller lower leg bone) on the left side, combined with a tear of the tibiofibular syndesmosis and often an associated injury to the medial structures of the ankle. The term "displaced" indicates that the fractured bone fragments are not aligned properly, and "closed fracture" means the skin remains intact. This is documented as an initial encounter for treatment, meaning it is the first time the patient is receiving active treatment for this injury.

Causes

Maisonneuve's fractures typically result from external rotational forces applied to the ankle, such as twisting or turning. Common scenarios include falls, sports-related injuries, or trauma where the foot is planted and the body rotates forcefully. The rotational force disrupts the syndesmotic ligaments and may cause additional damage to the medial malleolus or deltoid ligament.

Risk Factors

• Participation in activities with high rotational stress on the ankle, such as soccer or basketball.
• Previous ankle injuries or ligamentous instability.
• Improper footwear or uneven terrain increasing fall risk.
• Conditions affecting bone density or strength, such as osteoporosis.

Symptoms

• Pain and swelling localized to the proximal fibula and ankle.
• Difficulty bearing weight on the affected leg.
• Instability or a feeling of the ankle "giving way."
• Bruising or tenderness along the lower leg.

Diagnosis

Diagnosis involves a physical examination to assess ankle stability, tenderness, and swelling. Imaging, typically X-rays, is used to identify the proximal fibula fracture and associated injuries. Additional imaging, such as CT or MRI, may be required to evaluate soft tissue damage or confirm syndesmotic involvement.

Treatment Options

Treatment depends on the severity of the fracture and associated injuries. Options may include immobilization with a cast or brace, surgical fixation to realign and stabilize the fracture, or physical therapy to restore function and strength. Pain management and activity modification are also part of the treatment plan.

Prognosis and Follow-Up

With appropriate treatment, most patients recover well, though recovery time varies. Follow-up care typically includes regular monitoring to ensure proper healing and rehabilitation. Long-term outcomes depend on the extent of the injury and adherence to treatment recommendations.

Complications

Potential complications include chronic ankle instability, post-traumatic arthritis, nonunion or malunion of the fracture, and nerve or vascular damage. Infection may occur if surgical intervention is required.

Lifestyle & Prevention

• Wear appropriate footwear for activities to reduce fall risk.
• Strengthen ankle muscles through exercises to improve stability.
• Avoid uneven surfaces or activities with high rotational stress if prone to ankle injuries.
• Use protective gear during sports to minimize trauma.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, inability to bear weight, visible deformity, or signs of infection (e.g., redness, swelling, fever) after an injury.

Tips for Medical Coders

Document the specific location (left leg), displacement status, and encounter type (initial for closed fracture) to ensure accurate coding. Include details about associated injuries, such as syndesmotic tears or medial malleolus damage, as these may impact code assignment. Verify that the fracture is classified as closed and that the encounter is the first for active treatment.