S82.012A Displaced osteochondral fracture of left patella, initial encounter for closed fracture

Name of the Condition

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

Summary

This condition involves a displaced fracture of the left patella (kneecap) that includes damage to the adjacent cartilage (osteochondral injury). The fracture is closed, meaning the skin is intact, and it is the initial encounter for this specific injury. Displacement indicates that bone fragments are out of their normal alignment, which may affect joint function.

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. The osteochondral component suggests cartilage involvement, which may occur with significant force or rotational stress.

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 left knee.
• Swelling and bruising around the kneecap.
• Inability to straighten the left 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. CT or MRI may be used to assess cartilage damage or complex fractures.

Treatment Options

Treatment depends on the severity of displacement and cartilage damage. Non-surgical options include immobilization with a brace, pain management, and physical therapy. Surgical intervention may be required for significant displacement or unstable fragments, involving procedures to realign and stabilize the fracture.

Prognosis and Follow-Up

Prognosis varies based on fracture severity, treatment, and patient factors. Most patients recover with proper management, but some may experience long-term joint stiffness or arthritis. Follow-up care includes monitoring healing, physical therapy to restore function, and regular assessments for complications.

Complications

• Post-traumatic arthritis due to cartilage damage.
• Chronic knee pain or instability.
• Nonunion or malunion of the fracture.
• Infection (rare, especially with surgical intervention).

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.
• Strengthen knee muscles with targeted exercises to improve stability.
• Avoid sudden, forceful movements that strain the knee.

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, drainage). Prompt evaluation is critical to prevent complications and ensure proper treatment.

Tips for Medical Coders

Document the laterality (left patella), fracture type (displaced osteochondral), encounter stage (initial), and fracture status (closed). Ensure clinical notes specify the absence of open wounds and confirm the initial encounter for this injury. Accurate documentation supports correct code assignment and reflects the clinical scenario.