Lecture 12 Radiography of the Lower Limbs Foot

Lecture (12)

Radiography of the Lower Limbs • Foot Basic Projections Dorsi. Plantar Lateral Oblique Dorsi-Plantar Foot Exposure Factors Kv m. As FFD (cm) Grid 55 5 100 No Focu Cassette s Fine 24 x 30 cm

• position Patient • Supine or seated on table • Knees flexed with feet separated • Part position Rest plantar surface of foot firmly On cassette • Adjust midline of foot parallel tolong axis of cassette Central Ray Angled 10 -15 degrees towards heel Center Point Base of 3 rd metatarsal

• Structure shown Tarsals, metatarsals and phalanges

• Lateral Foot Exposure Factors Kv m. As 60 10 FFD (cm) 100 Grid No Focu Cassette s Fine Patient Position lying upon affected side Adjust leg & foot in lateral position Part position Adjust patella perpendicular to table Adjust plantar surface perpendicular to cassette Central Ray Perpendicular Center Point Medial cuneiform (at level of base of 3 rd metatarsal) 24 x 30 cm

• Structure shown Lateral view of Tarsals, metatarsals and phalanges

• Oblique foot Exposure Factors Kv 60 m. As 5 FFD Focu Grid Cassette (cm) s 100 No Fine 24 x 30 cm Patient position Supine or seated on table Knees flexed with feet separated Part position Center toes with plantar surface flat Against cassette Medially rotate until plantar surface form angle of 30 degrees to cassette

• Central ray Perpendicular • Center Point 3 rd metatarsal • Structure shown Tarsals, metatarsals & phalanges Oblique view of