ap bilat hip or modified cleaves meth

What is another name for the AP Bilateral Hips Projection?

Modified Cleaves Method (Bilateral Frog-Leg). Easy Explanation: This projection demonstrates both hips in a frog-leg position.

What are the clinical indications for the Modified Cleaves Method?

Nontrauma hip evaluation and developmental dysplasia of the hip (DDH/CHD). Easy Explanation: Commonly used to evaluate pediatric and nontraumatic hip conditions.

When should the Modified Cleaves Method NOT be performed?

With destructive hip disease or possible hip fracture/dislocation. Easy Explanation: The frog-leg position may worsen the injury.

What is the minimum SID for the Modified Cleaves Method?

40 inches (100 cm). Easy Explanation: Standard pelvis SID.

What IR size is recommended for the Modified Cleaves Method?

14 × 17 inches (35 × 43 cm), landscape. Easy Explanation: A large IR is needed to include both hips.

Is a grid recommended for the Modified Cleaves Method?

Yes. Easy Explanation: The pelvis is thick enough to require a grid.

What kVp range is recommended for the Modified Cleaves Method?

80–90 kVp. Easy Explanation: Provides adequate penetration of the pelvis and hips.

What is the patient position for the Modified Cleaves Method?

Supine. Easy Explanation: The patient lies flat on their back.

How much should both knees be flexed?

Approximately 90°. Easy Explanation: The knees are bent to create the frog-leg position.

What should be done with the plantar surfaces of the feet?

Place them together. Easy Explanation: The soles of the feet touch each other.

How much should the femora be abducted?

40°–45° from vertical. Easy Explanation: Both thighs are moved outward equally.

Why must both femora be abducted equally?

To prevent pelvic rotation. Easy Explanation: Unequal abduction causes asymmetry.

What indicates no pelvic rotation?

Equal distance from each ASIS to the tabletop. Easy Explanation: Both sides of the pelvis should be level.

At what level should the IR be centered?

At the level of the femoral heads. Easy Explanation: Centering is based on the hip joints.

Where should the top of the IR be positioned?

Approximately at the level of the iliac crest. Easy Explanation: This ensures both hips are included.

Where is the CR directed?

3 inches (7.5 cm) below the ASIS (1 inch above the symphysis pubis). Easy Explanation: This is the standard centering point.

How far above the symphysis pubis is the CR centered?

1 inch (2.5 cm). Easy Explanation: A common ARRT measurement question.

What breathing instruction is used?

Suspend respiration. Easy Explanation: Prevents motion blur.

What anatomy must be demonstrated on a Modified Cleaves projection?

Femoral heads, femoral necks, acetabula, and trochanteric regions. Easy Explanation: Both hip joints must be visualized.

What indicates proper positioning on a Modified Cleaves projection?

Symmetric appearance of the pelvic bones. Easy Explanation: Both sides should look equal.

How should the obturator foramina appear?

Symmetric. Easy Explanation: Asymmetry indicates rotation.

How should the femoral heads and necks appear?

Symmetric. Easy Explanation: Both hips should appear the same.

How should the lesser trochanters appear?

Equal in size and projected beyond the medial margin of the femora. Easy Explanation: Frog-leg positioning makes the lesser trochanters prominent.

What happens to the femoral necks on a Modified Cleaves projection?

They appear foreshortened. Easy Explanation: The frog-leg position shortens their appearance.

What happens to the greater trochanters on a Modified Cleaves projection?

Most of the greater trochanter is superimposed over the femoral neck. Easy Explanation: This is a normal appearance for this projection.

What image appearance indicates no motion?

Sharp trabecular markings. Easy Explanation: Sharp bone detail means the patient remained still.