S82.154K Nondisplaced fracture of right tibial tuberosity, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Nondisplaced fracture of right tibial tuberosity, subsequent encounter for closed fracture with nonunion

Summary

A nondisplaced fracture of the right tibial tuberosity involves a break in the bony prominence on the anterior upper tibia where the patellar tendon attaches, with no significant misalignment of the bone fragments. This is a subsequent encounter for a closed fracture that has failed to heal (nonunion). The fracture remains closed, meaning the skin is intact, but the lack of healing indicates a delayed or incomplete recovery process. This condition typically arises after an initial injury and requires ongoing management to address the nonunion.

Causes

Traumatic injury is the primary cause, such as direct impact to the knee, falls, or sudden forceful contraction of the quadriceps muscle. Sports-related incidents, motor vehicle accidents, or other high-impact events can lead to this fracture. Nonunion may result from inadequate initial treatment, poor blood supply to the fracture site, infection, or excessive movement during healing.

Risk Factors

• Participation in activities with rapid knee extension or jumping (e.g., basketball, soccer)
• Adolescent growth spurts, especially in athletes
• Previous knee injuries or surgeries
• Osteoporosis or bone-weakening conditions
• Smoking or poor nutrition, which can impair bone healing

Symptoms

• Persistent localized pain and swelling over the tibial tuberosity
• Difficulty extending the knee or bearing weight
• Visible deformity or prominence at the fracture site
• Bruising or tenderness on palpation
• Lack of improvement in symptoms over time, indicating nonunion

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and functional limitations. Imaging studies, such as X-rays, are used to confirm the fracture and evaluate displacement. CT or MRI may be employed to assess bone healing and identify nonunion. Additional tests, like blood work, may be performed to rule out infection or nutritional deficiencies affecting healing.

Treatment Options

Treatment focuses on promoting bone healing and may include immobilization with a cast or brace, physical therapy to maintain mobility, and pain management. Surgical intervention, such as bone grafting or internal fixation, may be necessary for nonunion. Activity modification and weight-bearing restrictions are often recommended to support recovery.

Prognosis and Follow-Up

Prognosis depends on the success of treatment and the underlying factors contributing to nonunion. With appropriate management, many patients achieve healing and return to normal function, though recovery may be prolonged. Regular follow-up appointments and imaging are essential to monitor progress and adjust treatment as needed.

Complications

• Chronic pain or instability in the knee
• Persistent nonunion requiring additional intervention
• Infection, particularly if surgical treatment is involved
• Limited range of motion or functional impairment
• Increased risk of future fractures due to weakened bone

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider
• Maintain a balanced diet rich in calcium and vitamin D to support bone health
• Use proper protective equipment during sports or physical activities
• Follow post-injury guidelines for activity modification and weight-bearing
• Quit smoking and limit alcohol consumption, as these can impair healing

When to Seek Professional Help

Seek medical attention if you experience persistent pain, swelling, or difficulty bearing weight after a knee injury. Contact a healthcare provider if symptoms worsen or fail to improve with initial treatment, as this may indicate nonunion or other complications.

Tips for Medical Coders

Document the encounter as a subsequent visit for a closed fracture with nonunion. Ensure clinical notes specify the fracture type (nondisplaced), laterality (right), and the presence of nonunion. Include details on treatment provided and any imaging or diagnostic findings to support the code assignment.