TEST 4 Flashcards
how many phalanges in 2-5th digit
3
2 joints in 1st digit of toe
IP
MTP (metatarsophalangeal)
Where is the CR for metatarsals? What projection use this CR?
3rd TMT joint
AP & Oblique
Where is the CR for metatarsals?
3rd TMT joint
What is the joint located at the base of the metatarsal
Tarsometatarsal (TMT)
Which structure on the metatarsal provides for the attachment of a tendon
Tuberosity
What is the joint between the proximal and distal phalanges of first digit
IP joint
Where do sesamoid bones locate in the metatarsal?
the posterior or plantar surface at the head of the first metatarsal
When weight is placed on foot, fractures at ____ can cause pain & discomfort. Why?
sesamoid bones
because of their plantar location
Which projection is used to see the sesamoid bones of the foot
Tangential
THe most posterior-inferior part of calcaneus contains a process called ___
tuberosity
Achilles tendon attached to ____ of the _____
tuberosity - calcaneus
What structure is visualized laterally on axial projection of the calcaneus
peroneal trochlea
What is the trochlear process of the calcaneus called?
peroneal trochlea
Peroneal trochlea is located ____
Sustentaculum tali is located ___
laterally
medially
Between peroneal trochlea & sustentaculum tali, which one is more prominent
sustentaculum tali
What is the depression between the posterior & middle articular facet called?
calcaneal sulcus
Calcaneal sulcus located_____
between posterior & middle articulate surfaces
Sinus tarsi is formed by ___
calcaneus sulcus
Sinus tarsi is an opening for ___ to pass through
ligaments
Calcaneus articulates with ____
cuboid & talus
Calcaneus articulate ___ with cuboid and ____ with talus
anteriorly
superiorly (????)
Talus articulate:
superiorly with ___
anteriorly with ____
inferiorly with ___
tibia & fibula
navicular
calcaneus
Navicular articulates:
____ with talus
____ with cuboid
_____ with 3 cuneiforms
posteriorly
laterally
anteriorly
Medial cuneiform articulates:
___ with navicular
___ with 1st & 2nd metatarsal
____ with intermediate cuneiform
proximally
distally
laterally
Cuboid articulates:
proximally with ____
medially with ____
distally with ____
calcaneus
lateral cuneiform & navicular
4th & 5th metatarsal
Intermediate cuneiform articulate:
proximally with ___
distally with ____
_____ on each side
navicular
second metatarsal
medial & lateral cuneiforms
Lateral Cuneiform articulates:
distally with ____
medially with ____
laterally with ____
2,3,4th metatarsal
intermediate cuneiform
cuboid
Calcaneus articulates with talus to form ____ joint
subtalar
which articular facet of calcaneus provides medial support for subtalar joint
middle articular facet
Which tarsal bone is a part of the ankle joint
talus
TIbia is located ____
Fibula is located ____
medially
laterally
Medial malleolus associated with distal ____
tibia
Mortise is formed by _____
inferior portions of tibia & fibula
Ankle mortise is not seen on ____. Why?
true AP
talus overlap distal fibula & tibia
Ankle mortise can be seen on when legs are ___
15* internal rotated AP Oblique
Anterior tubercle is located on____
distal TIBIA
[ANKLE] 3 main parts of distal tibia
medial malleolus
anterior tubercle
fibular notch
What is the ceiling of ankle mortise joint called
tibial plafond
tibial plafond is formed by ___
distal tibial joint surface
The anterior tubercle is best seen on ___ view
lateral
Intermalleolar plane is drawn between two ____, approximately ___ to ____ degree from coronal plane
malleoli
15-20
__ arch located on the medial aspect of foot
longitudinal
Longitudinal arch is higher in the ____ side than ___ side
medial - lateral
___ arch located along plantar surface
transverse
which tarsal bone made up the transverse arch
cuneiforms
higher arch = ____ tube
higher
dorsiflexion will ___ angle of the joint
plantar flexion will ___ angle of the joint
decrease
increase
4 foot motions
dorsiflexion
plantar flexion
inversion
eversion
Routines for TOES & kVp
AP foot
Oblique
Lateral
50-60 kVp
position patient for AP Foot
knee is flexed and the plantar surface on IR
Where is the CR for AP FOOT? what is the tube angle, if there is one?
base of 3rd metatarsal
10 degree posterior tube angle
What happened if the plantar surface is not on the IR?
increased OID
base of metatarsal articulates with which tarsal bones
cuneiform & cuboid
for AP toe, the CR is ___ to metatarsal
perpendicular
1,2,3rd digits are positioned in ____
medial oblique
4 & 5th digits are positioned in _____
lateral oblique
How to position patient for oblique of 1-3rd toe
rotate leg internally for plantar surface to be 45 degree to IR
How to position patient for oblique of 4-5th toe
rotate leg externally for plantar surface to be 45 degree to IR
Where is the CR for oblique toe
MTP joint of the affected toe
For 1-3rd digit, which projection is used when taking lateral image of toe
lateromedial
For 4-5th digit, which projection is used when taking lateral image of toe
mediolateral
What is important when doing lateral toe
remove superimposition of unaffected toes
[LATERAL TOE] Where is the CR for:
1st
2-5th digit?
IP
PIP
Tangential projection of sesamoid bone will give the same image as ___
lateromedial of 1st digit
how to position for tangential projection of sesamoid
patient is in prone position
dorsiflex foot so plantar surface is 15-20 from vertical
dorsiflex digits
Where is the CR for tangential projection of sesamoid
posterior to 1st MTP
When do we see the sesamoid best on plantar surface
when digits are hyperflexed
kVp for foot
60-65
routines & alternatives for FOOT
AP
Internal Oblique
Lateral
external oblique
weight-bearing
how to position for internal oblique for FOOT
pt supine or sitting
knee flexed
rotate internally so the plantar surface is 30-40 degrees from IR
Why the tube angle is important for AP FOOT
elongate tarsals and remove superimposition of the transverse arch
[Internal Obl] Why is it important to rotate the foot internally 30-40 from IR?
see tarsal & proximal metatarsal without superimposition of the transverse arch
Where is the CR for Lateral foot
1st cuneiform
What is the projection for lateral FOOT
mediolateral
how to position for Lateral FOOT
externally rotate till lateral
plantar surface to 90 degrees to IR
How to position patient for AP Weight-bearing
pt erect with full weight evenly distributed
[FOOT] What is the tube angle for AP weight-bearing
15 degrees posterior
where is the CR for AP Weight-bearing
base of metatarsal
How to position the patient for Lateral Weight-bearing
pt erect with weight on the affected foot
Where is CR for Lateral Weight-bearing
3rd metatarsal
which arch is showed in lateral weight-bearing
longitudinal
Routines for Calcaneus
Plantodorsal
Lateral
kVp for calcaneus
65
Where is the CR for Calcaneus Plantodorsal, tube angle?
base of 3rd metatarsal
exit at lateral malleolus
40 degrees cephalad
How to position patient for Plantodorsal calcaneus
supine
dorsiflex foot 90
Where is the CR for lateral calcaneus
1” inferior to medial malleolus
How to position patient for lateral calcaneus
dorsiflex foot 90
rotate foot laterally
shoot mediolateral
3 anatomic structures on distal tibia
medial malleolus
anterior tubercle
fibular notch
Routines for ankle
AP or AP Mortise
Lateral
Internal/External Rotation
Where is the CR for AP Ankle
between malleoli
Where is the CR for Int/Ext rotation Ankle
between malleoli
How do you position patient for AP ankle
supine
extend leg
dorsiflex 90
How to position patient for Mortise AP
foot neutral
rotate leg 15-20 internally
how do you know if its a true Mortise
open lateral & medial mortise joint with malleoli in profile
what is the difference between AP and AP Mortise ankle
the superimposition of the fibula on talus + closed mortise ankle (AP)
How do you know if the ankle is internally or laterally rotate
distal tibiofibular joint open –> internal rotate
if it close –> external rotate
Where is the CR for lateral ankle? projection?
medial malleoli
mediolateral
How do you position patient for Lateral ankle
lateral recumbent
dorsiflex 90
Anterior tubercle is best seen on ___
lateral view
How do you position patient to make the intermalleolar plane parallel to IR
rotate leg 15-20 degrees internally
where is the exit for CR of plantodorsal ankle
lateral malleolus
The ankle joint is the articulation of ____
distal tibia & fibular with talus
Which 2 projections/ positions will both include calcaneus
lateral ankle
plantodorsal calcaneus
Why we only see anterior tubercle in lateral?
because on an AP, anterior tubercle is on anterior aspect of distal tibia –> cant see that well
What is the weight-bearing bone of the leg
Tibia
The medial & lateral condyles of lower leg are located at _____
proximal tibia
where is intercondylar eminence located?
the superior surface of tibia head between 2 condyles
The intercondylar eminence is on the ___
tibial plateau
What are tibial plateau? what does it articulate with
articular facets of the condyles
femur
When an AP knee is positioned, why do we need to angle the CR?
CR parallel to the tibial plateau.
The tibial tuberosity is on ___
proximal end of tibia
The anterior crest is on ____
proximal tibia
Tibial tuberosity is a distal attachment of ____
patellar tendon
tibial plateau is on ___
proximal end of tibia
What is anterior crest? its location?
shin bone
on the anterior surface of tibial body
3 parts of proximal fibula
apex (styloid process)
head
neck
No weight-bearing bone, but has more muscle attachment of lower leg is ____
Fibula