S82.152B Displaced fracture of left tibial tuberosity, initial encounter for open fracture type I or II

Name of the Condition

• Displaced fracture of left tibial tuberosity, initial encounter for open fracture type I or II

Summary

A displaced fracture of the left tibial tuberosity involves a break in the bony prominence on the anterior upper tibia where the patellar tendon attaches. Displacement means the bone fragments are misaligned. This specific code refers to an initial encounter for an open fracture, where the bone fragments pierce the skin (type I or II). The injury typically results from trauma or excessive stress on the knee, particularly in active individuals.

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. Open fractures occur when the broken bone penetrates the skin, increasing infection risk.

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
• High-impact trauma, such as falls or direct blows to the knee

Symptoms

• Severe pain and swelling over the tibial tuberosity
• Inability to fully extend the knee or bear weight
• Visible deformity or abnormal positioning of the knee
• Bruising or discoloration in the affected area
• Open wound at the fracture site (indicating an open fracture)

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and deformity. Imaging studies, such as X-rays, are used to confirm the fracture and evaluate displacement. Additional tests like MRI may be ordered to assess soft tissue damage. The open wound is examined to classify the fracture type (I or II) based on skin penetration and contamination.

Treatment Options

• Immediate wound care to reduce infection risk
• Surgical intervention to realign and stabilize the fracture, often with internal fixation
• Antibiotics to prevent infection in open fractures
• Immobilization with a brace or cast post-surgery
• Pain management with analgesics or anti-inflammatories
• Physical therapy to restore knee function and strength

Prognosis and Follow-Up

Prognosis depends on the severity of displacement, fracture type, and treatment adherence. Most patients recover fully with proper care, but open fractures carry a higher risk of infection or delayed healing. Follow-up appointments monitor healing, wound status, and functional recovery. Physical therapy is often recommended to restore mobility and strength.

Complications

• Infection at the fracture site
• Delayed healing or nonunion
• Malunion (improper bone alignment)
• Chronic pain or stiffness
• Nerve or blood vessel damage
• Post-traumatic arthritis

Lifestyle & Prevention

• Use protective gear during high-impact sports
• Strengthen quadriceps and surrounding muscles to reduce stress on the knee
• Avoid sudden, forceful movements that strain the knee
• Maintain bone health through proper nutrition (e.g., calcium, vitamin D)
• Warm up and stretch before physical activity

When to Seek Professional Help

Seek immediate medical attention if you experience severe knee pain, swelling, or an open wound after trauma. Signs of infection (e.g., fever, increased redness, pus) or inability to bear weight also require prompt evaluation.

Tips for Medical Coders

Document the fracture type (open I or II) and laterality (left) clearly. Note the initial encounter status and any associated injuries. Ensure wound characteristics (e.g., size, contamination) are recorded to support the open fracture classification.