Table 1.

Comparison of normal to abnormal radiographic findings.

Radiographic angle	Normal range	Abnormal range
Talar second metatarsal (DP)	<16	>16
Talar head uncovering (DP)	<7	>7
Calcaneal pitch/inclination (Lateral)	20 to 30	<20
Sinus tarsi (Lateral)	Open	Partial/Full Obliteration
Talar declination (Lateral)	<21	>21
Talar first metatarsal (Meary's angle) lateral	0	>4
Navicular position (Lateral)	Plantar aspect is dorsal to the horizontal bisection of the cuboid	Plantar aspect of the navicular is plantar to the horizontal bisection of the cuboid
Calcaneal axial (Posterior)	Rectus alignment	Valgus alignment