S72.122P Displaced fracture of lesser trochanter of left femur, subsequent encounter for closed fracture with malunion

Name of the Condition

• Displaced fracture of lesser trochanter of left femur, subsequent encounter for closed fracture with malunion

Summary

This condition describes a displaced fracture of the lesser trochanter in the left femur where the bone fragments have healed in an abnormal position (malunion). The fracture is closed, meaning the skin remains intact, and this is a subsequent encounter, indicating follow-up care after the initial treatment phase. The lesser trochanter is a bony prominence on the femur that serves as an attachment point for muscles, and malunion may affect muscle function and stability.

Causes

Displaced fractures of the lesser trochanter typically result from trauma, such as falls or direct impact injuries. Malunion occurs when the fracture heals in a misaligned position, often due to inadequate immobilization, poor blood supply to the bone, or excessive movement during the healing process. Weakened bones from conditions like osteoporosis can increase the risk of fracture and malunion.

Risk Factors

• Advanced age, particularly in postmenopausal women with osteoporosis.
• Conditions that weaken bones, such as osteoporosis, osteopenia, or metastatic bone disease.
• Inadequate immobilization or premature weight-bearing after initial fracture treatment.
• Poor blood supply to the fracture site, which can impair healing.
• History of previous fractures or falls.

Symptoms

• Persistent pain in the hip or groin area, often worsened by movement.
• Swelling and bruising around the hip that may not fully resolve.
• Difficulty bearing weight on the affected leg.
• Muscle weakness or limited range of motion in the hip due to malalignment.
• Visible deformity or abnormal contour of the hip if the malunion is severe.

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays or CT scans, are used to confirm the fracture type, assess alignment, and identify malunion. The provider will evaluate the fracture's healing progress and determine if the malunion affects function or requires intervention.

Treatment Options

Treatment depends on the severity of malunion and functional impact. Options may include physical therapy to improve strength and mobility, pain management, or surgical correction to realign the bone. Bracing or orthotics may be used to support the hip during healing. In some cases, no intervention is needed if the malunion is asymptomatic.

Prognosis and Follow-Up

Prognosis varies based on the degree of malunion and patient factors. Many patients recover with conservative management, but severe malunion may lead to chronic pain or functional limitations. Follow-up care includes regular imaging to monitor healing and assessments of pain and mobility. Long-term outcomes depend on adherence to treatment and rehabilitation.

Complications

• Chronic pain or discomfort in the hip or groin.
• Reduced mobility or difficulty with daily activities.
• Increased risk of future fractures due to weakened bone or altered biomechanics.
• Nerve or blood vessel damage from malaligned bone fragments.
• Need for additional surgery if malunion causes significant functional impairment.

Lifestyle & Prevention

• Engage in weight-bearing exercises to strengthen bones and improve balance.
• Ensure adequate calcium and vitamin D intake to support bone health.
• Use assistive devices like canes or walkers to reduce fall risk, especially in older adults.
• Avoid high-impact activities that may stress the hip until cleared by a provider.
• Maintain a healthy weight to reduce stress on the hip joint.

When to Seek Professional Help

Seek care if you experience worsening pain, new swelling, or difficulty bearing weight on the affected leg. Contact a provider if you notice changes in mobility, persistent numbness, or signs of infection (e.g., redness, fever). Follow up as recommended to monitor healing and address complications.

Tips for Medical Coders

Document the encounter as a subsequent visit for a closed fracture with malunion. Include details on the fracture's healing status, functional impact, and any treatments provided. Ensure documentation supports the malunion diagnosis and aligns with the code's specificity for a closed fracture in the left femur.