S82.011 Displaced osteochondral fracture of right patella

Name of the Condition

• Displaced osteochondral fracture of right patella

Summary

This condition involves a fracture of the right 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.

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 right knee.
• Swelling and bruising around the kneecap.
• Inability to straighten or bear weight on the right 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 and displacement.

Treatment Options

• Conservative management: Immobilization with a brace or cast to allow healing.
• Pain management with medications or ice.
• Physical therapy to restore mobility and strength.
• Surgical intervention to realign and stabilize the displaced fragment, if necessary.

Prognosis and Follow-Up

Recovery depends on the severity of the fracture and treatment. Immobilization and physical therapy typically lead to healing within 6–12 weeks. Follow-up imaging may be needed to monitor alignment and healing progress.

Complications

• Nonunion or malunion of the fracture.
• Post-traumatic arthritis due to cartilage damage.
• Chronic pain or stiffness in the knee.
• Reduced range of motion.

Lifestyle & Prevention

• Use protective gear during high-risk activities.
• Maintain bone health with adequate calcium and vitamin D.
• Avoid sudden, forceful movements that stress the knee.
• Strengthen quadriceps and hamstring muscles to support the knee.

When to Seek Professional Help

Seek immediate care if you experience severe knee pain, inability to bear weight, visible deformity, or a "popping" sensation after injury.

Tips for Medical Coders

Document the displacement and osteochondral nature of the fracture, as well as the right laterality. Ensure clinical notes specify whether the fracture involves both bone and cartilage to support the code.