S82.015 Nondisplaced osteochondral fracture of left patella

Name of the Condition

• Nondisplaced osteochondral fracture of left patella

Summary

This condition involves a fracture of the left patella (kneecap) where a portion of the bone and its attached cartilage is damaged but remains in its normal anatomical position. The injury affects both bony and cartilaginous structures, and the lack of displacement distinguishes it from other patellar fractures.

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 fracture occurs when the force is sufficient to damage the bone and cartilage but not enough to separate the 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 left knee.
• Swelling and bruising around the kneecap.
• Inability to straighten or bear weight on the left knee.
• 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

• Immobilization with a brace or cast to allow healing.
• Pain management with medications or ice.
• Physical therapy to restore strength and mobility.
• Surgical intervention if the fracture is unstable or involves significant cartilage damage.

Prognosis and Follow-Up

Most nondisplaced fractures heal with conservative treatment, but recovery may take several weeks to months. Follow-up imaging and physical therapy are often recommended to monitor healing and restore function.

Complications

• Delayed healing or nonunion.
• Post-traumatic arthritis due to cartilage damage.
• Chronic pain or stiffness in the knee.
• Risk of future fractures if bone density is reduced.

Lifestyle & Prevention

• Use protective gear during high-risk activities.
• Maintain bone health through diet and exercise.
• Avoid sudden, forceful movements that strain the knee.
• Warm up properly before physical activity.

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. Persistent pain or limited mobility after initial treatment also warrants evaluation.

Tips for Medical Coders

Document the laterality (left) and the nondisplaced nature of the osteochondral fracture. Ensure clinical notes specify the involvement of both bone and cartilage to support the code.