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upper limb · Axiolateral
Radial Head (Coyle) View
Seated, elbow flexed 90 deg (lateral).
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AI Patient · KV Sir
How to perform this view
- 01
Position as lateral elbow.
- 02
Pronate hand.
- 03
Angle CR 45 deg toward shoulder.
- 04
Centre to radial head.
Anatomical & patient position
Patient: Seated, elbow flexed 90 deg (lateral).
Part: Hand pronated; CR angled 45 deg toward shoulder.
Central ray & centring point
45 deg toward shoulder, through radial head.
Exposure factors
kVp
65-75 kVp
mAs
4-6 mAs
SID
100 cm
IR size
18 x 24 cm
Grid
No
Respiration
N/A
Clinical indications
- Occult radial head fracture
- Coronoid process fracture
Contraindications & precautions
- Gross deformity / open fracture - do not manipulate; adapt projection and use horizontal beam
Structures shown & evaluation criteria
- Radial head free from ulna superimposition