S82.154C Nondisplaced fracture of right tibial tuberosity, initial encounter for open fracture type IIIA, IIIB, or IIIC

Name of the Condition

• Nondisplaced fracture of right tibial tuberosity, initial encounter for open fracture type IIIA, IIIB, or IIIC

Summary

A nondisplaced fracture of the right 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 the bone fragments remaining in their normal alignment. The fracture is classified as open (compound) due to a wound extending to the fracture site, with varying degrees of soft tissue damage. This injury typically results from high-energy trauma, such as motor vehicle accidents or severe sports injuries, and requires prompt medical attention to address both the fracture and the open wound.

Causes

Traumatic injury is the primary cause, such as direct, forceful impact to the knee, falls from significant height, or sudden, violent contraction of the quadriceps muscle. Open fractures often result from high-energy events that disrupt both bone and overlying soft tissue, exposing the fracture site to the external environment.

Risk Factors

• Participation in high-impact sports or activities with rapid knee extension (e.g., football, gymnastics)
• Adolescent growth spurts, particularly in athletes with developing musculoskeletal systems
• Previous knee injuries or surgeries that may weaken the area
• Osteoporosis or other bone-weakening conditions that reduce fracture resistance

Symptoms

• Severe localized pain and swelling over the tibial tuberosity
• Visible wound or laceration at the fracture site (indicating an open fracture)
• Difficulty extending the knee or bearing weight
• Bruising, discoloration, or tenderness on palpation
• Possible exposure of bone fragments through the open wound

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, deformity, and the presence of an open wound. Imaging studies, such as X-rays, are used to confirm the fracture and evaluate displacement. CT or MRI may be ordered to assess soft tissue damage, bone fragmentation, or associated injuries. The open wound is evaluated for contamination, tissue loss, or vascular compromise to determine the fracture type (IIIA, IIIB, or IIIC).

Treatment Options

• Immediate wound care and irrigation to reduce infection risk
• Surgical intervention to clean the fracture site, stabilize the bone (e.g., with screws or plates), and repair soft tissue
• Antibiotics to prevent or treat infection
• Immobilization with a brace or cast to support healing
• Pain management with analgesics or anti-inflammatory medications
• Physical therapy to restore knee function and strength after healing

Prognosis and Follow-Up

Prognosis depends on the severity of the open fracture, soft tissue damage, and treatment response. Nondisplaced fractures generally heal well with proper care, but open fractures carry a higher risk of infection or delayed healing. Follow-up appointments are necessary to monitor wound healing, assess fracture alignment, and adjust treatment as needed. Physical therapy is often recommended to regain mobility and strength.

Complications

• Infection at the fracture site or wound
• Delayed union or nonunion of the fracture
• Chronic pain or stiffness in the knee
• Nerve or vascular damage from the initial trauma
• Post-traumatic arthritis due to joint involvement

Lifestyle & Prevention

• Use protective gear during high-impact sports (e.g., knee pads, helmets)
• Maintain bone health through adequate calcium and vitamin D intake
• Avoid activities that place excessive stress on the knee if at risk
• Gradually increase physical activity to prevent overuse injuries
• Seek prompt treatment for knee injuries to reduce complication risk

When to Seek Professional Help

• Severe knee pain or inability to bear weight
• Visible wound or bleeding at the knee
• Numbness, tingling, or coldness in the foot (possible nerve or vascular injury)
• Fever, redness, or pus at the wound site (signs of infection)
• Worsening pain or swelling despite initial care

Tips for Medical Coders

Document the fracture as nondisplaced and specify the open fracture type (IIIA, IIIB, or IIIC) to accurately reflect the injury. Include details about the initial encounter, wound characteristics, and any associated soft tissue damage. Ensure the right tibial tuberosity is clearly identified, and note the absence of displacement to support the code assignment.