S92.152K Displaced avulsion fracture (chip fracture) of left talus, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced avulsion fracture (chip fracture) of left talus, subsequent encounter for fracture with nonunion

Summary

A displaced avulsion fracture (chip fracture) of the left talus, subsequent encounter for fracture with nonunion, refers to a fracture where a small bone fragment is pulled away from the talus due to ligament or tendon tension, and the fracture has failed to heal properly during follow-up care. The talus, a key weight-bearing bone in the ankle, supports joint stability; displacement may affect alignment and mobility. Nonunion indicates the fracture site has not united after an expected healing period, requiring ongoing management.

Causes

Direct trauma to the ankle, such as falls, sports injuries, or motor vehicle accidents, is the primary cause. High-impact forces or sudden twisting motions can strain ligaments or tendons, leading to bone avulsion. Nonunion may result from inadequate immobilization, poor blood supply to the fracture site, infection, or underlying conditions that impair healing.

Risk Factors

• Participation in high-impact sports (e.g., basketball, soccer) or activities with ankle twisting risks.
• Osteoporosis or reduced bone density.
• Previous ankle or talus injuries.
• Improper footwear or inadequate protective gear during physical activities.
• Smoking or other factors that impair bone healing.

Symptoms

• Persistent pain in the ankle or foot, often worsening with activity.
• 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

Diagnosis involves a physical examination to assess pain, swelling, and mobility. Imaging studies, such as X-rays, CT scans, or MRIs, are used to confirm the fracture, assess displacement, and evaluate for nonunion. These tests help determine the extent of the injury and guide treatment planning.

Treatment Options

Treatment may include immobilization with a cast or brace to stabilize the fracture, pain management, and physical therapy to restore function. Surgical intervention, such as bone grafting or fixation, may be necessary for severe nonunion or displacement. Follow-up imaging monitors healing progress.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture and response to treatment. Nonunion may require extended recovery or additional interventions. Regular follow-up appointments and imaging are essential to assess healing and adjust management. Most patients can return to normal activities with proper care, though some may experience long-term mobility limitations.

Complications

• Chronic pain or arthritis in the ankle joint.
• Persistent instability or difficulty bearing weight.
• Infection, particularly if surgery is performed.
• Need for additional procedures if nonunion persists.

Lifestyle & Prevention

• Wear supportive footwear and use protective gear during high-risk activities.
• Maintain bone health through a balanced diet and regular exercise.
• Avoid activities that increase ankle injury risk, especially if previous injuries exist.
• Follow post-injury care instructions to promote healing and reduce nonunion risk.

When to Seek Professional Help

Seek medical attention if pain worsens, swelling increases, or mobility declines. Immediate care is needed for severe pain, inability to bear weight, or signs of infection (e.g., fever, redness, drainage).

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, specifying the left talus and displaced avulsion fracture. Include details on treatment provided, imaging results, and any surgical interventions. Ensure documentation supports the nonunion diagnosis and subsequent encounter timing.