S82.154P Nondisplaced fracture of right tibial tuberosity, subsequent encounter for closed fracture with malunion

Name of the Condition

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

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 misalignment of bone fragments. This is a subsequent encounter for a closed fracture that has healed with malunion, meaning the bone has united but in an abnormal position. The fracture remains closed, with the skin intact, and the malunion may affect knee function or alignment.

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. Malunion occurs when the fracture heals in a non-anatomic position, often due to inadequate immobilization or poor alignment during initial treatment.

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
• Inadequate initial fracture management or immobilization

Symptoms

• 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
• Altered knee mechanics due to malunion

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 malunion. CT or MRI may be employed to assess the extent of malunion and its impact on surrounding structures. Clinical correlation with the patient's history of prior fracture and healing is essential.

Treatment Options

Treatment focuses on managing symptoms and addressing functional impairment. Options may include physical therapy to improve range of motion and strength, orthotic devices for support, and pain management. Surgical intervention is considered if the malunion significantly affects knee function or causes persistent pain.

Prognosis and Follow-Up

Prognosis depends on the severity of the malunion and its impact on knee function. Most patients experience improved symptoms with conservative management, though some may have long-term limitations. Regular follow-up is necessary to monitor healing, assess functional recovery, and adjust treatment as needed.

Complications

• Chronic pain or discomfort
• Reduced knee range of motion
• Altered gait or biomechanics
• Increased risk of future knee injuries
• Potential need for surgical correction

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider
• Use proper protective equipment during sports
• Maintain bone health through adequate nutrition and exercise
• Follow post-injury rehabilitation guidelines to optimize healing

When to Seek Professional Help

Seek medical attention if you experience worsening pain, swelling, or difficulty bearing weight, or if you notice a new deformity or loss of function in the knee. Prompt evaluation is important to address complications or adjust treatment.

Tips for Medical Coders

Document the subsequent encounter for closed fracture with malunion, including details of the malunion's impact on function. Ensure clinical documentation supports the diagnosis and any associated treatments. Code S82.154P is specific to the right tibial tuberosity with malunion; verify laterality and fracture status in the record.