S82.036 Nondisplaced transverse fracture of unspecified patella

Name of the Condition

• Nondisplaced transverse fracture of unspecified patella

Summary

This condition involves a horizontal break across the kneecap (patella), a triangular bone that protects the knee joint. The fracture line runs perpendicular to the bone’s long axis, and the bone fragments remain aligned in their normal position. Nondisplacement indicates the fracture is stable, with no significant shift of the bone pieces.

Causes

Direct trauma to the knee, such as a fall onto the kneecap, a blow from an object, or a forceful contraction of the quadriceps muscle. High-impact injuries, like those from sports or motor vehicle accidents, are common triggers.

Risk Factors

• Participation in activities with a high risk of knee injury, such as contact sports or skiing.
• Osteoporosis or other bone-weakening conditions.
• Previous knee injuries or surgeries.
• Advanced age, which may reduce bone density.

Symptoms

• Sudden, severe pain in the knee.
• Swelling and bruising around the kneecap.
• Inability to straighten the knee or bear weight.
• Visible deformity or a gap in the kneecap area.
• A "popping" sensation at the time of injury.

Diagnosis

A physical examination to assess knee movement, swelling, and tenderness. Imaging studies, typically X-rays, to confirm the fracture and evaluate bone alignment. In some cases, a CT scan may be used to assess complex fractures or displacement.

Treatment Options

• Conservative management: Immobilization with a brace or cast to allow healing. Physical therapy to restore strength and mobility once the fracture stabilizes.
• Surgical intervention: Rarely required for nondisplaced fractures, but may be considered if the fracture is unstable or fails to heal with conservative care.

Prognosis and Follow-Up

Most nondisplaced transverse patella fractures heal well with conservative treatment. Full recovery typically takes several weeks to months, depending on the individual’s health and adherence to rehabilitation. Follow-up appointments monitor healing progress and adjust treatment as needed.

Complications

• Delayed union or nonunion of the fracture.
• Post-traumatic arthritis due to joint damage.
• Chronic pain or stiffness in the knee.
• Rarely, infection or nerve injury if surgery is performed.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., knee pads in sports).
• Maintain bone health through adequate calcium and vitamin D intake.
• Avoid sudden, forceful movements that strain the knee.
• Strengthen surrounding muscles (e.g., quadriceps) to support the joint.

When to Seek Professional Help

Seek immediate medical attention if you experience severe knee pain, inability to bear weight, visible deformity, or signs of infection (e.g., fever, redness, pus). Persistent pain or swelling after initial treatment also warrants evaluation.

Tips for Medical Coders

Document the fracture as "nondisplaced" and specify the patella as "unspecified" to align with the code S82.036. Include details on the mechanism of injury, imaging findings, and treatment approach to support accurate coding. Ensure the absence of displacement is clearly noted, as this distinguishes the condition from displaced fractures.