S92.152 Displaced avulsion fracture (chip fracture) of left talus

Name of the Condition

• Displaced avulsion fracture (chip fracture) of left talus

Summary

A displaced avulsion fracture (chip fracture) of the left talus is a type of fracture where a small piece of bone is pulled away from the talus, typically due to ligament or tendon attachment. This injury involves trauma to the ankle joint and may affect mobility and weight-bearing ability, depending on the size and location of the avulsed fragment. Displacement indicates the bone fragment has moved from its original position, potentially impacting joint alignment or stability.

Causes

Direct trauma to the ankle, such as falls, sports injuries, or motor vehicle accidents, is the most common cause. High-impact forces or twisting motions can also lead to avulsion fractures, particularly in activities involving sudden stops or changes in direction. The fracture occurs when a ligament or tendon pulls a small bone fragment from the talus.

Risk Factors

• Participation in high-impact sports (e.g., basketball, soccer) or activities with a risk of ankle injury.
• Osteoporosis or other conditions that weaken bone density.
• Previous ankle or talus injuries.
• Improper footwear or inadequate protective gear during physical activities.

Symptoms

• Sudden, severe pain in the ankle or foot.
• Swelling and bruising around the injury site.
• Difficulty bearing weight or walking.
• Limited range of motion in the ankle joint.
• Possible deformity or abnormal positioning of the foot.

Diagnosis

A healthcare provider will perform a physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays or CT scans, are typically used to confirm the fracture and evaluate displacement. The provider may also review the mechanism of injury to determine the extent of damage.

Treatment Options

Treatment depends on the severity of displacement and symptoms. Non-displaced fractures may be managed with immobilization (e.g., casting or bracing) and rest. Displaced fractures often require reduction (realignment) and may involve surgical intervention to stabilize the bone. Pain management and physical therapy are common adjuncts to support recovery.

Prognosis and Follow-Up

Most avulsion fractures heal with proper treatment, but recovery time varies based on fracture severity and treatment approach. Follow-up appointments are necessary to monitor healing, assess mobility, and adjust treatment plans. Physical therapy may be recommended to restore strength and function.

Complications

Potential complications include nonunion (failure to heal), malunion (improper healing), chronic pain, or arthritis in the ankle joint. Nerve or blood vessel damage is rare but possible with severe trauma or displacement.

Lifestyle & Prevention

• Wear appropriate footwear and protective gear during sports or high-risk activities.
• Strengthen ankle muscles through exercises to improve stability.
• Avoid sudden, high-impact movements that strain the ankle.
• Maintain bone health through adequate nutrition and exercise.

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, fever). Prompt evaluation is important to prevent complications and ensure proper treatment.

Tips for Medical Coders

Document the laterality (left talus) and displacement status clearly in the medical record. Ensure the fracture is described as avulsion (chip fracture) with displacement to support accurate coding. Include details about the injury mechanism and any imaging findings to confirm the diagnosis.