S32.311 Displaced avulsion fracture of right ilium

Name of the Condition

• Displaced avulsion fracture of right ilium

Summary

This condition involves a displaced avulsion fracture of the right ilium, where a fragment of bone is pulled away from the main ilium bone due to tendon or ligament tension. The ilium is the largest bone of the pelvis, and avulsion fractures typically occur at attachment sites for muscles or ligaments. Displacement means the fractured fragment is no longer in its normal anatomical position, which may affect surrounding structures and mobility.

Causes

High-impact trauma such as falls, motor vehicle accidents, or direct blows to the right hip/pelvis. Avulsion fractures often result from sudden, forceful muscle contractions (e.g., during sports or strenuous activity) that pull the bone fragment away from its attachment.

Risk Factors

• Participation in high-impact sports or activities with sudden movements (e.g., sprinting, jumping).
• Previous hip or pelvic injuries.
• Chronic conditions that weaken bone or soft tissues (e.g., osteoporosis, tendinopathy).
• Age-related changes in bone density or muscle strength.

Symptoms

• Sharp, localized pain in the right hip, buttock, or pelvic region.
• Swelling, bruising, or tenderness over the affected area.
• Difficulty standing, walking, or bearing weight on the right leg.
• Possible visible deformity if the fragment is significantly displaced.
• Limited range of motion in the hip or lower back.

Diagnosis

Physical examination to assess pain, swelling, and functional limitations. Imaging studies, including X-rays, CT scans, or MRI, to visualize the fracture, confirm displacement, and evaluate associated soft tissue or nerve involvement.

Treatment Options

• Immobilization (e.g., braces, crutches) to stabilize the fracture and allow healing.
• Pain management with medications (e.g., NSAIDs, analgesics).
• Physical therapy to restore strength, mobility, and function once healing permits.
• Surgical intervention if the fragment is severely displaced or causes functional impairment.

Prognosis and Follow-Up

Prognosis depends on the severity of displacement, adherence to treatment, and overall health. Most cases heal with conservative management, but recovery may take several weeks to months. Follow-up imaging and clinical assessments monitor healing progress and guide rehabilitation.

Complications

• Delayed union or nonunion of the fracture.
• Nerve or vascular damage from displaced bone fragments.
• Chronic pain or reduced mobility if treatment is inadequate.
• Re-fracture due to incomplete healing or premature activity.

Lifestyle & Prevention

• Gradual return to activity under medical guidance to avoid re-injury.
• Strength and flexibility exercises to support hip and pelvic stability.
• Protective gear during high-risk activities (e.g., sports).
• Bone health maintenance (e.g., adequate calcium, vitamin D) to reduce fracture risk.

When to Seek Professional Help

Seek immediate care for severe pain, inability to bear weight, visible deformity, or signs of nerve involvement (e.g., numbness, tingling). Follow up with a healthcare provider if symptoms worsen or fail to improve with initial treatment.

Tips for Medical Coders

Document the specific location (right ilium), fracture type (avulsion), and displacement status clearly. Include details on trauma mechanism, imaging findings, and treatment approach to support code specificity. Ensure documentation aligns with clinical guidelines for accurate coding.