S82.156 Nondisplaced fracture of unspecified tibial tuberosity

Name of the Condition

• Nondisplaced fracture of unspecified tibial tuberosity

Summary

A nondisplaced fracture of the tibial tuberosity involves a break in the bony prominence on the anterior tibia where the patellar tendon attaches, without misalignment of the bone fragments. This injury typically results from trauma or excessive stress on the knee, particularly in active individuals. The fracture may be partial or complete, and the lack of displacement often allows for conservative management.

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, particularly in adolescents, are common triggers. The fracture occurs when the force exceeds the bone's structural integrity, often during activities involving jumping or sudden stops.

Risk Factors

• Participation in high-impact sports (e.g., basketball, soccer)
• Adolescent growth spurts with rapid bone growth
• Previous knee injuries or tendon abnormalities
• Activities involving sudden stops or jumps

Symptoms

• Localized pain and swelling over the tibial tuberosity
• Difficulty extending the knee or bearing weight
• Bruising or tenderness on palpation
• Mild functional limitation without visible deformity

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 ordered for complex cases to assess soft tissue involvement or rule out associated injuries.

Treatment Options

• Immobilization with a brace or cast to stabilize the fracture
• Pain management with analgesics or anti-inflammatory medications
• Physical therapy to restore range of motion and strength
• Activity modification to avoid further stress on the knee

Prognosis and Follow-Up

Most nondisplaced fractures heal well with conservative treatment, and patients typically regain full function within several weeks to months. Follow-up appointments monitor healing progress and functional recovery. Complications are rare but may include delayed union or persistent pain if activity restrictions are not followed.

Complications

• Delayed healing or nonunion
• Persistent pain or functional limitation
• Associated soft tissue injury (e.g., tendon damage)
• Recurrence with inadequate rehabilitation

Lifestyle & Prevention

• Gradual return to activity under medical guidance
• Strengthening exercises for the quadriceps and surrounding muscles
• Proper warm-up and technique in sports to reduce injury risk
• Use of protective gear during high-impact activities

When to Seek Professional Help

Seek immediate medical attention if severe pain, swelling, or inability to bear weight occurs after a knee injury. Persistent pain, deformity, or functional decline despite treatment also warrants evaluation.

Tips for Medical Coders

Document the fracture as nondisplaced and specify the tibial tuberosity involvement. Include details on the mechanism of injury, imaging findings, and treatment approach to support code assignment. Ensure clinical documentation aligns with the nondisplaced nature of the fracture for accurate coding.