S82.152C Displaced fracture of left tibial tuberosity, initial encounter for open fracture type IIIA, IIIB, or IIIC

Name of the Condition

• Displaced fracture of left tibial tuberosity, initial encounter for open fracture type IIIA, IIIB, or IIIC

Summary

A displaced fracture of the left tibial tuberosity with an open fracture type IIIA, IIIB, or IIIC involves a break in the bony prominence on the anterior upper tibia where the patellar tendon attaches, with misalignment of bone fragments and an open wound exposing the fracture site. This injury typically results from high-energy trauma, such as motor vehicle accidents or severe sports injuries, and requires immediate medical attention due to the risk of infection and soft tissue damage.

Causes

Traumatic injury is the primary cause, including direct impact to the knee, falls from height, or forceful contraction of the quadriceps muscle. Open fractures occur when the broken bone pierces the skin, often in high-impact events like motor vehicle collisions or contact sports.

Risk Factors

• Participation in high-impact activities (e.g., football, skiing)
• Adolescent growth spurts with rapid bone development
• Previous knee injuries or surgeries
• Osteoporosis or bone-weakening conditions

Symptoms

• Severe pain, swelling, and bleeding at the fracture site
• Visible bone protrusion or wound over the tibial tuberosity
• Inability to extend the knee or bear weight
• Bruising, discoloration, or signs of infection (e.g., redness, pus)

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and wound characteristics. Imaging studies, such as X-rays, are used to confirm the fracture and evaluate displacement. CT scans may be ordered to assess bone fragments, while MRI or ultrasound can evaluate soft tissue damage. The open wound is examined to classify the fracture type (IIIA, IIIB, or IIIC) based on contamination and tissue loss.

Treatment Options

• Immediate wound debridement and irrigation to reduce infection risk
• Surgical fixation (e.g., screws, plates) to stabilize the fracture
• Antibiotics to prevent or treat infection
• Pain management with analgesics or anti-inflammatories
• Post-operative immobilization with a brace or cast

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, soft tissue damage, and treatment timing. Most patients recover with proper care, but complications like infection or nonunion may occur. Follow-up includes regular imaging to monitor healing and physical therapy to restore knee function.

Complications

• Infection at the fracture site
• Nonunion or malunion of the bone
• Chronic pain or stiffness
• Nerve or blood vessel damage
• Post-traumatic arthritis

Lifestyle & Prevention

• Use protective gear during high-impact sports
• Maintain bone health with calcium and vitamin D
• Avoid sudden, forceful knee movements
• Seek prompt treatment for knee injuries to prevent worsening

When to Seek Professional Help

Seek immediate medical attention if you experience severe knee pain, visible bone protrusion, or an open wound after trauma. Signs of infection (e.g., fever, pus) or inability to bear weight also require urgent care.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC) and the initial encounter status. Include details on wound size, contamination, and soft tissue damage to support code assignment. Ensure the left tibial tuberosity and displacement are clearly noted in the medical record.