Radiology
For hallux valgus, a radiograph is taken with the patient standing. This is in order to show the degree of metatarsal and hallux angulation. Hallux angulation is measured relative to a reference line through the second metatarsal.
The x-ray may reveal subluxation or osteoarthritis of the first metatarsophalangeal joint.
Hallux valgus classification is mild, moderate, and severe based on the weight-bearing anteroposterior, lateral oblique, lateral, and sesamoid axial X-ray views;
Degree: Hallux valgus angle (HVA) / Intermetatarsal angle (IMA)
- Normal: less than15 degrees / 9 degrees
- Mild: 15 to 30 degrees / 9 to 13 degrees
- Moderate: 30 to 40 degrees / 13 to 20degrees
- Severe: over 40 degrees / over 20 degrees
Reference
- Kuhn J. Hallux Valgus. Treasure Island (FL): StatPearls Publishing. 2025 Jan
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