Knee Sp. View

Main purpose(s) of AP Weight Bearing Knee

• Patella Rotated

  Medially

• Arthritis

• Lateral Femoral

  Epicondyle in

  profile

• Knee Joint Spaces

CR: AP Weight-Bearing / Standing Knee

• 1/2" below Apex of

  Patella on Right Knee

• CR:

  Perpendicular IR for

  Average Sized Patient

• CR:

  5 to 10 degrees caudad

  on thin patient

• CR:

  Midpoint between knee

  joints 1/2" below apex

  of Patella

Eval Criteria: AP Weight-Bearing Knee

• One half of proximal

  fibula superimposed

  by tibia

• Patella slightly

  beyond edge of

  lateral

  femoral condyle

• Symmetric

  appearance of

  femoral

  & tibial condyles

• Femorotibial joint

  spaces demonstrated

  bilaterally

Part Position: External Oblique Knee

• 45° internal rotation

• 45° external rotation

• Align leg & knee to

  CR and midline to the

  table

• Interepicondylar

  Line 45 degrees

  to IR

Eval Criteria: External Oblique Knee

• Patella superimposing

  the lateral femoral

  condyle

• Medial condyles of

  femur & tibia

  demonstrated in

  profile

• Proximal fibula

  superimposed over

  proximal tibia

• Patella slightly

  beyond

  edge of lateral

  femoral

  condyle

Holmblad Method - Intercondylar Fossa (ICF): Patient Position

• Lean forward

  20 to 30 degrees

• Have patient kneel on

  table

• Flex knee 60 - 70

  degrees from full

  extension

• Flex lower leg

  40° to 50°

CR: Holmblad Method

• 1/2" below apex of

  Patella

• Perpendicular to lower

  leg (40 to 50

          

  caudad to match

  degree of flexion)

• Perpendicular to lower

  leg entering superior

  aspect of

        

  popliteal fossa

• Exiting at the level of

  patellar apex for all

  positions

Eval Criteria: Camp Coventry & Holmblad

• Intercondylar fossa in

  profile

• Patella beyond

  edge of lateral

  femoral

  condyle

         

• No superimposition by

  patella

• Symmetric

  appearance of distal

  posterior femoral

  condyles

• Articular facets (tibial plateaus) & intercondylar eminence of

           tibia seen without superimposition

Intercondylar Fossa (ICF): Part Position

• Lean forward

  20 to 30

  degrees

        

        

• Flex lower leg 40° to 50°

• Flex knee 60 - 70

  degrees from full

  extension

• Patient laying on

  femur

  & femur should

  be kept

  straight

Intercondylar Fossa(ICF): Part Position
Beclere

• Flex knee 40-50

  degree angle place femoral

          

  portion of knee on IR

• IR placed firmly under

  posterior thigh and leg

• Lean forward 20 to 30 degrees

         Flex knee 60 - 70 degrees from full extension

• Flex affected knee 40

  to 45 degrees