Tib-Fib AP
Position the Patient
- Seated or supine
- Leg fully extended
- Foot dorsiflexed slightly (toes up)
- Ensure leg is straight with no rotation
Words That Work
“Straighten your leg and keep your kneecap pointing toward the ceiling. Pull your toes toward your nose, like the bottom of your foot is resting against an invisible wall. Don’t let your leg roll inward or outward. Hold still.”
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AP tib-fib positioning
Set Up the Shot
- Center here
- Central ray
- Mid‑shaft of tibia/fibula
- Include this in the field
- Collimation
- Entire tibia and fibula · Include knee joint and ankle joint
- Set the distance
- SID
- 40" (increase if needed to include both joints)
- Check the technique
- Technique
- 60-65 kVp
- Follow facility protocols
Common Pitfalls
- •Knee or ankle joint not included
- •Rotation (tibia and fibula not parallel)
- •Leg not straight
Evaluate the Image
What should be visible?
- Entire tibia and fibula
- Knee joint
- Ankle joint
Does the image pass?
- ✓Entire tib‑fib included
- ✓No rotation (tibia and fibula parallel)
- ✓Both joints visible