Foot
The calcaneus articulates with the talus and the:
cuboid
Which tarsal bone does the distal tibia articulate to form the ankle joint?
talus
Which tendon attaches directly to the tibial tuberosity?
Patellar
When the ASIS-to-tabletop measurement is between 19 and 24 cm, the central-ray angulation for an AP knee is
perpendicular (0 degrees)
How many degrees should the limb be internally rotated for an AP projection of the femur with the hip included?
15 degrees
To properly visualize the joint spaces with the AP projection of the foot, the CR must be:
perpendicular to the metatarsals.
The purpose of the AP stress views of the ankle is to demonstrate:
possible joint separations or ligament tears.
When performing a lower leg procedure, typically the ankle and knee joint can be included in one image with what adjustment to the IR?
orienting the IR diagonally
What anatomical structure is demonstrated using the Settegast or Merchant methods?
patella
Where should the top of the IR/collimated field be placed for an AP projection of the proximal femur?
ASIS
For an AP oblique projection of the foot in medial rotation, the plantar surface of the foot should form an angle of
30 degrees.
Radiographs reveal fractures of the lateral and medial malleoli, with ankle joint dislocation. What type of fracture did the patient sustain?
Potts
What is the joint classification of the distal tibiofibular joint?
fibrous syndesmosis
How is the central ray directed for the PA axial projection (Holmblad method) of the intercondylar fossa?
Perpendicular to the lower leg
The AP projection of the proximal femur requires internal rotation in order to:
place the femoral neck parallel to the IR
An avulsion fracture of the base of the fifth metatarsal is called a ____ fracture.
Jones
Where will the fibula be located on a properly positioned lateral radiograph of the ankle?
Over the posterior half of the tibia
What positioning error occurred if the proximal tibiofibular joint is open on an AP projection of the tibia/fibula?
Excessive medial rotation
The profile appearance of the adductor tubercle and excessive superimposition of the fibular head and neck on a mediolateral knee projection indicate:
under-rotation of the knee toward the IR.
The inferior surface of the femoral condyles may not be superimposed on a lateral projection of the distal femur due to:
beam divergence
Which projections of the foot will best demonstrate the structural status of the longitudinal arch?
Lateral weight-bearing
A radiograph of an AP oblique ankle (mortise) demonstrates a portion of the calcaneus superimposing the lateral mortise joint. What positioning error most likely occurred?
Insufficient dorsiflexion
A radiograph of an AP tibia/fibula reveals a diminished femorotibial joint space, with slight visualization of the intercondylar fossa. What positioning error most likely occurred?
Insufficient extension of the knee
If the knee is flexed 40 degrees for the PA axial intercondylar fossa (Camp-Coventry) projection, how many degrees is the central ray angled?
40 degrees
A lateral projection of the proximal femur will demonstrate ________ of the femoral neck.
foreshortening