S72.431M Displaced fracture of medial condyle of right femur, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Displaced fracture of medial condyle of right femur, subsequent encounter for open fracture type I or II with nonunion

Summary

This condition involves a displaced fracture of the medial condyle (the inner rounded projection) of the right femur, the thigh bone, at the knee joint. The fracture is displaced, meaning the bone fragments are not aligned properly. This is a subsequent encounter, indicating ongoing care for an open fracture classified as type I or II, where the skin is broken but contamination is minimal. The term "nonunion" specifies that the fracture has failed to heal properly after an expected period. This injury affects knee stability and function, potentially leading to pain, swelling, and impaired mobility.

Causes

High-impact trauma, such as falls, motor vehicle accidents, or direct blows to the knee. Sports injuries or physical altercations involving the thigh. Stress fractures from repetitive overuse or strenuous activity. Inadequate initial treatment or poor blood supply to the fracture site may contribute to nonunion.

Risk Factors

• Advanced age, which may lead to decreased bone density.
• Osteoporosis or other bone-weakening conditions.
• Participation in high-risk activities or contact sports.
• Prior history of femur fractures or bone disorders.
• Smoking or poor nutrition, which can impair healing.
• Inadequate immobilization or non-compliance with treatment plans.

Symptoms

• Persistent severe pain in the knee or thigh area.
• Swelling, bruising, or visible deformity around the knee.
• Inability to bear weight or move the knee joint properly.
• Possible numbness or tingling if nerves are involved.
• Open wound at the fracture site (type I or II open fracture).
• Lack of healing progress over time, indicating nonunion.

Diagnosis

Physical examination to assess pain, swelling, and limb alignment. Imaging studies, such as X-rays or CT scans, to confirm the fracture type, location, and nonunion status. Additional tests, like MRI, if soft tissue damage or subtle fractures are suspected. Evaluation of the open wound to classify the fracture type (I or II) and assess for infection.

Treatment Options

Surgical intervention to realign and stabilize the fracture, often with plates, screws, or bone grafts to promote healing. Antibiotics or wound care to manage the open fracture and reduce infection risk. Physical therapy to restore mobility and strength once healing progresses. Monitoring for signs of infection or further complications.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the success of treatment, and patient factors like age and overall health. Nonunion may require additional procedures to achieve healing. Regular follow-up with imaging to assess progress and adjust treatment as needed. Long-term monitoring for arthritis or functional impairment in the knee joint.

Complications

Infection at the fracture site or open wound. Delayed or failed healing (nonunion or malunion). Nerve or blood vessel damage affecting limb function. Chronic pain or arthritis in the knee joint. Reduced mobility or permanent disability if healing is incomplete.

Lifestyle & Prevention

Avoid high-impact activities until cleared by a healthcare provider. Maintain a balanced diet rich in calcium and vitamin D to support bone health. Quit smoking, as it impairs healing. Use protective gear during sports or high-risk activities. Follow post-treatment instructions carefully to optimize recovery.

When to Seek Professional Help

Severe or worsening pain, swelling, or deformity. Signs of infection, such as fever, redness, or pus at the wound site. Numbness, tingling, or loss of sensation in the leg or foot. Inability to bear weight or move the knee. Lack of healing progress over several months.

Tips for Medical Coders

Document the fracture type (displaced), location (medial condyle of right femur), encounter type (subsequent), open fracture classification (type I or II), and nonunion status clearly. Ensure the open fracture description aligns with type I (clean wound <1 cm) or type II (wound 1–10 cm, minimal contamination) criteria. Note any surgical interventions or complications to support coding accuracy.