S52.622 Torus fracture of lower end of left ulna

Name of the Condition

• Torus fracture of lower end of left ulna

Summary

A torus fracture of the lower end of the left ulna is a stable, incomplete break in the distal portion of the ulna, one of the two bones in the forearm. This type of fracture typically occurs in children due to the flexibility of their bones and is characterized by a buckling or compression of the bone cortex without significant displacement. The injury often results from a fall onto an outstretched hand and may involve the wrist joint or adjacent soft tissues.

Causes

The most common cause is trauma, such as a fall onto an outstretched hand, a direct blow to the forearm, or high-impact injuries like sports-related incidents. The force transmitted through the wrist or elbow can lead to a buckling of the distal ulna, particularly in pediatric patients with more pliable bone structures.

Risk Factors

• Participation in contact sports or activities with a high risk of falls (e.g., gymnastics, skateboarding)
• Pediatric age group, as children’s bones are more prone to torus fractures
• Osteoporosis or reduced bone density (less common in children but relevant in older populations)
• Previous forearm or wrist injuries
• Certain occupations or hobbies involving repetitive stress or heavy lifting

Symptoms

• Mild to moderate pain at the injury site
• Swelling or tenderness over the distal ulna
• Limited range of motion in the wrist or forearm
• Possible bruising or deformity (if significant buckling occurs)

Diagnosis

Diagnosis typically involves a physical examination to assess pain, swelling, and range of motion, followed by imaging studies such as X-rays. X-rays can reveal the characteristic buckling of the bone cortex without displacement. In some cases, additional imaging (e.g., CT or MRI) may be used to evaluate associated soft tissue injuries or rule out other fractures.

Treatment Options

Treatment usually focuses on immobilization with a cast or splint to allow the bone to heal. Pain management may include over-the-counter or prescription medications. For severe cases or those with limited mobility, physical therapy may be recommended to restore function. Surgical intervention is rarely needed due to the stability of the fracture.

Prognosis and Follow-Up

Prognosis is generally excellent, with most fractures healing within 4–6 weeks. Follow-up appointments may be scheduled to monitor healing and adjust immobilization as needed. Children typically resume normal activities once pain and swelling subside, while adults may require longer recovery periods depending on bone density and overall health.

Complications

Complications are rare but may include delayed healing, malunion (abnormal healing), or persistent pain. In rare cases, associated injuries to ligaments, tendons, or nerves may occur. Long-term issues like chronic pain or stiffness are uncommon with proper treatment.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., wrist guards for sports)
• Ensure safe play environments for children to reduce fall risks
• Maintain bone health through adequate nutrition (e.g., calcium, vitamin D)
• Avoid repetitive stress on the forearm or wrist when possible

When to Seek Professional Help

Seek medical attention if pain is severe, swelling worsens, or there is an inability to move the wrist or forearm. Immediate care is needed if numbness, tingling, or changes in skin color (e.g., pale or blue) occur, as these may indicate nerve or vascular involvement.

Tips for Medical Coders

Document the specific location (left ulna) and fracture type (torus) clearly. Ensure the encounter type (e.g., initial, subsequent) and fracture status (e.g., closed, open) are specified if applicable. Code S52.622 is specific to the left ulna; verify laterality and fracture details match the clinical documentation.