Table 1 Angles of interest measured on X-rays before and after the Lapidus operation
From: The change of first metatarsal head articular surface position after Lapidus arthrodesis
Angle | Preoperatively | Postoperatively |
|---|---|---|
HVA | 45.6° ± 20.5 (range 25.0° to 77.0°) | 24.6° ± 14.4° (range 2.1° to 36.0°) |
IMA | 16.9° ± 3.8° (range 8.5° to 28.5°) | 9.8° ± 5.3° (range − 2.0° to 27.8°) |
TASA | 3.8° ± 8.5° (range − 17.0° to 26.0°) | 9.9° ± 6.9° (range − 5.6° to 30.3°) |
PASA | 20.5° ± 7.5° (range 3.3° to 40.0°) | 19.4° ± 6.9° (range 2.6° to 36.9°) |
DASA | 1.5° ± 4.0° (range − 9.0° to 20.0°) | 3.4° ± 5.2° (range − 13.5° to 15.0°) |