Q66.21 Congenital metatarsus primus varus

Name of the Condition

• Congenital Metatarsus Primus Varus

Summary

Congenital metatarsus primus varus is a structural foot deformity present at birth characterized by an inward deviation of the first metatarsal bone. This condition affects the alignment of the forefoot, potentially leading to functional or cosmetic concerns.

Causes

The exact cause is not fully understood, but it is believed to involve a combination of genetic factors and disruptions during fetal development. Abnormalities in bone or soft tissue development may contribute to the deformity.

Risk Factors

• Family history of congenital foot deformities
• Intrauterine positioning (e.g., limited space)
• Maternal health conditions during pregnancy

Symptoms

• Visible inward deviation of the first metatarsal
• Altered forefoot alignment
• Potential difficulty with footwear fitting as the child grows

Diagnosis

Physical examination by a healthcare provider to assess forefoot structure and alignment. Imaging studies (e.g., X-rays) may be used to evaluate bone abnormalities.

Treatment Options

• Observation
• Orthotic devices or bracing
• Physical therapy
• Surgical intervention in severe cases

Prognosis and Follow-Up

With early intervention, many children achieve improved alignment and function. Regular follow-up is important to monitor development and adjust treatment as needed.

Complications

• Persistent alignment issues
• Difficulty with footwear
• Potential impact on gait or mobility

Lifestyle & Prevention

• Regular monitoring of foot development
• Appropriate footwear selection
• Follow-up with healthcare providers as recommended

When to Seek Professional Help

Consult a healthcare provider if visible foot deformity is present at birth or if concerns about foot alignment develop.

Tips for Medical Coders

Document the specific anatomical deviation (inward first metatarsal) and any associated clinical findings. Ensure documentation supports the diagnosis and any interventions provided.