S62.122 Displaced fracture of lunate [semilunar], left wrist

Name of the Condition

• Displaced fracture of lunate [semilunar], left wrist

Summary

A displaced fracture of the lunate (semilunar) in the left wrist is a break where the bone fragments are no longer in their normal anatomical position. The lunate is a small, crescent-shaped carpal bone critical for wrist stability and movement. Displacement can affect function and requires evaluation to determine the extent of misalignment and appropriate management.

Causes

This fracture typically results from trauma to the wrist, such as a fall onto an outstretched hand, a direct blow, or a twisting injury. High-impact events, like sports accidents or falls, are common triggers. The force applied to the wrist can cause the lunate to fracture and shift from its normal position.

Risk Factors

• Participation in activities with a high risk of wrist trauma, such as contact sports or gymnastics.
• Osteoporosis or weakened bone structure, which increases fracture susceptibility.
• Previous wrist injuries or conditions that compromise bone integrity.

Symptoms

• Severe pain or tenderness in the left wrist.
• Swelling, bruising, or visible deformity around the wrist.
• Limited range of motion, making it difficult to move the hand or grip objects.
• Possible numbness or tingling due to nerve irritation.

Diagnosis

Physical examination to assess pain, swelling, and wrist mobility. Imaging tests, such as X-rays, CT scans, or MRI, to confirm the fracture and evaluate the degree of displacement. Additional assessments may include nerve function tests if symptoms suggest involvement.

Treatment Options

• Immobilization: Using a cast, splint, or brace to stabilize the area and promote healing.
• Pain management: Medications like NSAIDs to reduce pain and inflammation.
• Surgical intervention: Required for severe displacement or instability, involving realignment and fixation of bone fragments.
• Rehabilitation: Physical therapy to restore strength and range of motion after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of displacement, treatment adherence, and individual healing capacity. Most fractures heal with proper immobilization or surgery, but recovery may take several weeks to months. Follow-up imaging and clinical evaluations are necessary to monitor healing and adjust treatment as needed.

Complications

• Arthritis: Long-term joint damage due to improper healing or persistent misalignment.
• Nerve or tendon damage: Resulting in chronic pain, numbness, or reduced function.
• Nonunion or malunion: Incomplete healing or improper bone alignment, requiring further intervention.
• Chronic wrist instability: Affecting grip strength and mobility.

Lifestyle & Prevention

• Avoid high-risk activities without proper protection (e.g., wrist guards in sports).
• Maintain bone health through adequate calcium and vitamin D intake.
• Use proper techniques to prevent falls, such as wearing appropriate footwear and removing tripping hazards.
• Strengthen wrist muscles through targeted exercises to improve stability.

When to Seek Professional Help

Seek immediate medical attention if you experience severe wrist pain, visible deformity, inability to move the wrist, or signs of nerve compression (e.g., numbness, tingling). Prompt evaluation is critical to prevent complications and ensure proper treatment.

Tips for Medical Coders

Document the specific wrist (left) and the displaced nature of the fracture. Include details on the fracture’s severity, treatment provided, and any associated complications to support accurate coding. Ensure documentation aligns with clinical findings and imaging results.