X-RAY OF CALCANEUS
X-ray Calcaneus Axial View
Calcaneus Axial
Region: calcaneus
Pathology: fracture with medial or lateral displacement and bony lesion of calcaneus
SID: 100 cm (40 inches)
Central Ray:bean directed to the base of the third metatarsal bone with 40˚ cephalic angulation
Respiration: unrelated
Position:
1. The patient is placed either in s supine
position or in a sitting position.
2. Place ankle
joint at the center of image receptor (IR) in dorsiflexion state.
3. If number 2 is impossible, pull the head of the metatarsal with
a gauze to make plantar perpendicular to IR.
Collimation: Include tuberosity of calcaneus and talocalcaneal joint.
Evaluation:
1. Calcaneus should
not be rotated.
2. The first to fifth base of the metatarsal
bones must not be shown.
3. Trochlear process, lateral process, tuberosity, talocalcaneal
joint, and sustentaculum
tali must be shown.
4. The longitudinal fracture of the calcaneus can
be identified.
kVp-70, mAs-16
Tip:
X-ray Calcaneus Lateral View
Region: calcaneus
Pathology: fracture and bony lesion of calcaneus
SID: 100 cm (40 inches)
Central Ray: perpendicular beam directed at the point 2.5 cm (1 inch) inferior to the malleolus
Respiration: unrelated
Position:
1. The patient is placed either in a lateral decubitus position or in a sitting position.
2. While flexing the filming leg to 45°, place the calcaneus at the center of the image receptor (IR).
Collimation: Include the posterior 1/2 of the foot, medial malleolus of tibia, and lateral malleolus of fibula.
Evaluation:
1. The proper densities of the calcaneus and the talus should be shown without rotation.
2. The proximal portion of the ankle joint and the talonavicular joint must be shown.
kVp-60, mAs-3.2
Tip:
