Subtalar joint

Question 1

Projections for subtalar joint

Answer 1

•Isherwood Method Lateromedial Oblique Projection (Medial Rotation Foot)
•Isherwood Method AP Axial Oblique Projection (Medial Rotation Ankle)
•Isherwood Method AP Axial Oblique Projection (Lateral Rotation Ankle)
•Broden Method AP Axial Oblique Projection (Medial Rotation)
•Broden Method AP Axial Oblique Projection (Lateral Rotation)

Question 2

Isherwood Method Lateromedial Oblique Projection (Medial Rotation Foot)
Part Position

Answer 2

• Semisupine
  Part Position:
• foot & leg rotated 45° medially
• knee flexed

Question 3

Isherwood Method Lateromedial Oblique Projection (Medial Rotation Foot)
Central Ray

Answer 3

Entrance: 1 in. distal & 1 in. anterior to lateral malleolus
Angulation: perpendicular

Question 4

Structures Shown

-Anterior subtalar
articulation

Answer 4

Isherwood Method Lateromedial Oblique Projection (Medial Rotation Foot)

Question 5

Isherwood Method AP Axial Oblique Projection (Medial Rotation Ankle)
Part Position

Answer 5

• Seated or semi-lateral
  recumbent (more comfortable)
  Part Position:
• Leg, foot & ankle rotated 30° medially
• dorsiflex foot

Question 6

Isherwood Method AP Axial Oblique Projection (Medial Rotation Ankle)
Central Ray

Answer 6

Entrance: 1 in. distal & 1 in. anterior to lateral malleolus
Angulation: 10° cephalad

Question 7

Structures Shown

Middle subtalar articulation &
“end on” projection of sinus tarsi

Answer 7

Isherwood Method AP Axial Oblique Projection (Medial Rotation Ankle)

Question 8

Isherwood Method AP Axial Oblique Projection (Lateral Rotation Ankle)
Part Position

Answer 8

• Supine/seated
  Part Position:
• Leg, foot & ankle rotated 30° laterally
• dorsiflex foot

Question 9

Isherwood Method AP Axial Oblique Projection (Lateral Rotation Ankle)
Central Ray

Answer 9

Entrance: 1 in. distal medial malleolus Angulation: 10° cephalad

Question 10

Structures Shown

Posterior subtalar
articulation

Answer 10

Isherwood Method AP Axial Oblique Projection (Lateral Rotation Ankle)

Question 11

Broden Method AP Axial Oblique Projection (Medial Rotation)
Part Position

Answer 11

• Supine
  Part Position:
• leg & foot rotated 45° medially
• dorsiflex foot
• foot rested against
  45° foam wedge

Question 12

Broden Method AP Axial Oblique Projection (Medial Rotation)
Central Ray

Answer 12

Entrance: 2-3 cm to lateral malleolus Angulation: 10°, 20°, 30°г 40° cephalad

Question 13

Structures Shown

• Posterior articulation
• Anterior portion (40°)
• Posterior portion (10°)
• Talus & sustentaculum
  tali articulation (20-30°)

Answer 13

Broden Method AP Axial Oblique Projection (Medial Rotation)

Question 14

Broden Method AP Axial Oblique Projection (Lateral Rotation)
Part Position

Answer 14

• Supine
  Part Position:
• Leg & foot rotated 45° laterally
• dorsiflex foot
• foot rested against
  45° foam wedge

Question 15

Broden Method AP Axial Oblique Projection (Lateral Rotation)
Central Ray

Answer 15

Entrance: 2 cm distal & 2 cm anterior to medial malleolus
Angulation: 15° cephalad

Question 16

Structures Shown
-Posterior articulation

Answer 16

Broden Method AP Axial Oblique Projection (Lateral Rotation)

Question 17

Purpose: To determine the presence of joint involvement in cases of comminuted fx

Answer 17

Broden Method AP Axial Oblique Projection (Lateral Rotation)