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SOMI Chapter 6
Feet, Ankle, Knee
Question | Answer |
---|---|
In the sesamoid tangential projection, how much angle from vertical is the foot dorsiflexed? | 15 to 20 angle from vertical |
What is the minimum amount of distal metatarsals that should be visualized on a sesamoid projection? | 3 |
The CR is perpendicular to the IR directed to what landmark on the sesamoid projection? | posterior aspect of the first MTP joint |
In the AP weight-bearing feet projection how much and which way is the CR angled? | 15 degrees posteriorly |
Where is the CR directed to for the weight-bearing AP feet projection? | midpoint between the feet at the level of the base of the metatarsals |
How much of the distal tib-fib should be visible on the weight-bearing lateral foot projection? | a minimum of 1 inch of distal tib-fib |
What are stress views of the ankles used for? | evaluate ankle joint for joint separation and ligament tear or rupture |
In the stress view of the ankle from a true AP position which way is inversion and which way is eversion? | inversion is stressing the ankle medially and eversion is stressing the ankle laterally |
In a AP weight-bearing bilateral knee projection where is the CR directed? | CR perpendicular to IR directed to midpoint between knee joints at a level 1/2 inch below the apex of the patella |
What is another name for the PA axial weight-bearing knee projection? | Rosenberg Method |
How much are the knees flexed in the Rosenberg method? | 45 degrees |
How much CR angle and what direction is the CR for the Rosenberg method? | 10 degree caudad |
Where is the CR directed in the Rosenberg ? | directly to midpoint between the knee joints at level 1/2 inch below apex of the patellae |
The Intercondylar fossa can be imaged PA or AP, what are the names of the two PA versions? | Camp Coventry method and Holmblad Method |
Camp Coventry method is done prone with the knee flexed at what angle? | 40 to 50 degree angle |
All three Holmblad methods require the patient to lean forward how far? | 20 to 30 degrees forward |
For both the Camp Coventry and Holmblad how is the CR directed? | perpendicular to the lower leg |
What is the name of the AP projection of the intercondylar fossa? | Beclere Method |
How much is the knee flexed in the Beclere method? | 40 to 45 degrees |
How should the CR be directed for the Beclere method? | perpendicular to the lower leg |
Where should the CR be directed for the Beclere method? | 1/2 inch distal to the apex of patella |