S82.013A Displaced osteochondral fracture of unspecified patella, initial encounter for closed fracture

Name of the Condition

• Displaced osteochondral fracture of unspecified patella, initial encounter for closed fracture

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 "initial encounter" specifies this is the first episode of care for the injury, and "closed fracture" means the skin over the fracture site remains intact.

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 the patient's overall health. Options may include immobilization with a brace or cast, physical therapy to restore function, or surgical intervention to realign and stabilize the fracture fragments. Pain management and anti-inflammatory medications may also be prescribed.

Prognosis and Follow-Up

Recovery time varies based on the treatment approach and the extent of the injury. Most patients regain full knee function with appropriate care, though some may experience long-term stiffness or arthritis. Follow-up appointments are necessary to monitor healing and adjust treatment as needed.

Complications

Potential complications include nonunion (failure of the bone to heal), malunion (improper healing), post-traumatic arthritis, chronic pain, or reduced range of motion. Infection or nerve damage may occur in cases requiring surgery.

Lifestyle & Prevention

Avoid high-impact activities that strain the knee until fully healed. Strengthening exercises for the quadriceps and hamstrings may help prevent future injuries. Wearing protective gear during sports and maintaining bone health through diet and exercise can reduce risk.

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, or drainage) after an injury.

Tips for Medical Coders

Use this code for a displaced osteochondral fracture of the patella (unspecified side) during the initial encounter for a closed fracture. Document the displacement, cartilage involvement, and closed nature of the fracture to support code assignment. Ensure the encounter is the first for this injury and the fracture is not open.