S72.47 Torus fracture of lower end of femur

Name of the Condition

• Torus fracture of lower end of femur

Summary

This condition involves a torus (buckle) fracture at the distal (lower) end of the femur, the thigh bone, near the knee joint. Torus fractures are incomplete breaks that result in a buckling of the bone cortex, typically occurring in children due to the flexibility of their bones. The fracture may involve the metaphyseal region, which is the area between the growth plate and the shaft of the bone, and can affect the stability of the knee joint.

Causes

Direct force or axial loading to the femur, such as a fall onto the knee or a blow to the thigh. Common in children due to their developing bone structure, which is more pliable and prone to buckling rather than complete fracture.

Risk Factors

• Pediatric age group, particularly during periods of rapid growth.
• Participation in high-impact activities or sports.
• Prior history of bone injuries or developmental abnormalities.

Symptoms

• Localized pain and tenderness at the fracture site.
• Swelling or mild deformity around the knee.
• Limited range of motion in the knee joint.
• Possible difficulty bearing weight on the affected leg.

Diagnosis

Physical examination to assess pain, swelling, and limb alignment. Imaging studies, such as X-rays, to confirm the torus fracture pattern and rule out other injuries. CT scans may be used if additional detail about the fracture or surrounding structures is needed.

Treatment Options

• Conservative Management: Immobilization with a cast or brace to allow healing.
• Pain Management: Over-the-counter or prescription medications to reduce discomfort.
• Physical Therapy: Rehabilitation exercises to restore mobility and strength once healing progresses.

Prognosis and Follow-Up

Torus fractures generally heal well with conservative treatment, and most children recover fully without long-term complications. Follow-up appointments may include repeat imaging to monitor healing and assess knee function. Return to normal activities is typically gradual, guided by pain and stability.

Complications

• Delayed healing or malunion if the fracture is not properly immobilized.
• Residual stiffness or limited range of motion in the knee.
• Rarely, growth plate disturbances if the fracture involves the metaphysis near the growth plate.

Lifestyle & Prevention

• Use protective gear during sports or high-risk activities.
• Ensure proper supervision and safe environments for children to reduce fall risks.
• Maintain overall bone health through balanced nutrition and regular activity.

When to Seek Professional Help

Seek immediate medical attention if there is severe pain, inability to move the leg, visible deformity, or signs of nerve or vascular injury (e.g., numbness, coldness, or discoloration).

Tips for Medical Coders

Document the specific location (lower end of femur) and fracture type (torus) to support accurate coding. Include details about the mechanism of injury, patient age, and any imaging findings that confirm the torus pattern. Ensure documentation aligns with the clinical presentation to justify the code selection.