S82.013 Displaced osteochondral fracture of unspecified patella

Name of the Condition

• Displaced osteochondral fracture of unspecified patella

Summary

This condition involves a fracture of the patella (kneecap) where a portion of the bone and its attached cartilage is displaced from its normal position. The fracture affects both the bony and cartilaginous structures, and the displacement indicates that the fragments are not aligned properly. The term "unspecified" is used when the side of the patella is not documented.

Causes

Direct trauma to the knee, such as a fall onto the kneecap, a forceful blow, or a high-impact injury (e.g., motor vehicle accident or sports injury). The displacement occurs when the force is sufficient to separate the bone-cartilage fragment from the main patella.

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 or bear weight on the knee.
• 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. CT or MRI may be used to assess cartilage damage or complex fractures.

Treatment Options

Treatment depends on the severity of the displacement and cartilage damage. Options may include immobilization with a brace or cast, physical therapy to restore function, or surgical intervention to realign and stabilize the fragments. Pain management and anti-inflammatory medications are often used to reduce symptoms.

Prognosis and Follow-Up

Prognosis varies based on the extent of the injury and treatment. Most patients recover with proper care, but some may experience long-term stiffness or arthritis. Follow-up appointments are necessary to monitor healing and adjust treatment plans as needed.

Complications

Potential complications include chronic pain, reduced knee mobility, post-traumatic arthritis, or nonunion of the fracture. Infection or nerve damage may occur after surgery.

Lifestyle & Prevention

Avoid high-impact activities that risk knee injury. Strengthening the quadriceps and maintaining a healthy weight can reduce stress on the knee. Use protective gear during sports and ensure proper technique to minimize trauma.

When to Seek Professional Help

Seek immediate medical attention if you experience severe knee pain, swelling, or an inability to bear weight after an injury. Prompt evaluation is important to prevent further damage and ensure appropriate treatment.

Tips for Medical Coders

Document the side of the patella (right, left, or unspecified) when available, as this affects code specificity. For S82.013, use this code when the patella side is not documented. Ensure the fracture is described as displaced and osteochondral to match the code criteria.