S82.864S Nondisplaced Maisonneuve's fracture of right leg, sequela

Name of the Condition

• Nondisplaced Maisonneuve's fracture of right leg, sequela

Summary

A Maisonneuve's fracture is a specific type of ankle injury involving a fracture of the proximal fibula (upper portion of the smaller lower leg bone) combined with a tear of the syndesmotic ligaments and often an associated injury to the medial malleolus or deltoid ligament. The term "nondisplaced" indicates that the fractured bone fragments remain in their normal alignment. This injury typically results from rotational forces applied to the ankle, commonly seen in trauma such as falls or sports injuries. The "sequela" designation indicates this code is used for complications or conditions resulting from the original fracture.

Causes

The fracture is caused by external rotational forces applied to the ankle, often during activities that involve twisting or turning. Common scenarios include falls, motor vehicle accidents, or sports-related impacts where the foot is planted and the body rotates forcefully. The mechanism typically involves the talus rotating outward, stressing the syndesmotic ligaments and causing the proximal fibula to fracture. The sequela phase reflects long-term effects of the initial injury.

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.
• Age-related factors that may affect bone density or ligament integrity.

Symptoms

• Persistent pain or discomfort in the ankle or lower leg.
• Swelling or stiffness in the affected area.
• Reduced range of motion or instability in the ankle joint.
• Difficulty bearing weight on the right leg.
• Possible deformity or malalignment from the original fracture.

Diagnosis

Diagnosis typically involves a thorough clinical evaluation, including a physical examination to assess pain, swelling, and stability. Imaging studies such as X-rays, CT scans, or MRIs may be used to confirm the fracture and assess for associated ligament damage or residual alignment issues. The sequela designation is confirmed by documenting long-term effects or complications from the original injury.

Treatment Options

Treatment focuses on managing symptoms and addressing residual issues. This may include physical therapy to improve strength and mobility, pain management, and orthotic devices or braces to support the ankle. In some cases, surgical intervention may be considered to correct persistent instability or malalignment. Rehabilitation is often tailored to the individual's functional needs.

Prognosis and Follow-Up

Prognosis depends on the severity of the original injury and the effectiveness of treatment. Most patients experience improved function with appropriate care, though some may have residual stiffness or instability. Regular follow-up appointments are important to monitor healing, assess functional recovery, and adjust treatment plans as needed.

Complications

• Chronic ankle instability or recurrent sprains.
• Persistent pain or arthritis in the ankle joint.
• Malunion or nonunion of the fracture.
• Nerve or vascular damage affecting sensation or circulation.
• Reduced mobility or activity limitations.

Lifestyle & Prevention

• Engage in regular strengthening and balance exercises to support ankle stability.
• Wear appropriate footwear with good ankle support during activities.
• Avoid uneven or slippery surfaces to reduce fall risk.
• Gradually return to high-impact activities under medical guidance.
• Maintain a healthy weight to minimize stress on the joints.

When to Seek Professional Help

Seek medical attention if you experience worsening pain, swelling, or instability in the ankle, or if you notice changes in sensation or circulation. Prompt evaluation is important if symptoms interfere with daily activities or if there is a new injury to the same area.

Tips for Medical Coders

This code (S82.864S) is used for the sequela of a nondisplaced Maisonneuve's fracture of the right leg. Documentation should clearly indicate the long-term effects or complications resulting from the original fracture, such as chronic instability, pain, or functional limitations. Ensure the sequela is directly linked to the prior injury and that the right leg and nondisplaced nature of the fracture are specified.