RTR lower extremity

Front

Which tarsal bone is the keystone of the medial longitudinal arch?

Back

Navicular

Front

The tuberosity on the 5th metatarsal serves as an attachment for which muscle?

Back

Fibularis brevis

Front

What anatomical feature of the calcaneus forms the superior aspect of the sinus tarsi?

Back

Calcaneal sulcus

Front

The navicular bone articulates with how many bones?

Back

5

Front

What is the primary reason for using a 15° posterior angulation in an AP axial projection of the toes?

Back

To open interphalangeal joints

Front

When performing a lateral projection of the 4th and 5th toes, which positioning maneuver ensures minimal superimposition? Options: Using a 15° sponge, Placing the foot in dorsiflexion, Isolating toes with tape, Angling the CR 10° medially

Back

Isolating toes with tape

Front

In an AP medial oblique projection of the foot, what is the optimal rotation angle?

Back

45°

Front

During an AP axial weight-bearing projection of the feet, why is a 10-15° posterior CR angulation used?

Back

To compensate for the arch curvature

Front

For a weight-bearing lateral foot projection, what positioning ensures the best evaluation of the longitudinal arch?

Back

Weight distributed equally on both feet

Front

Which projection best demonstrates the lateral cuneiform free of superimposition? Options: AP axial, AP medial oblique, Lateral weight-bearing, AP lateral oblique

Back

AP medial oblique