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Foot anat.

Foot anatomy and positioning guidelines

QuestionAnswer
The talus articulates with the _______ and _______ superiorly, the _______ inferiorly, and the _______ anteriorly. tibia, fibula, calcaneus, navicular
The heel of the foot is formed by the _______. calcaneus
The _______ is the largest bone in the foot. calcaneus
The _______ is the second largest bone in the foot. talus
The calcaneus articulates with the _______ superiorly, the _______ distally, and the _______ medially. talus, cuboid, navicular
The cubed shaped bone at the lateral side of the foot is called the _______. cuboid
The boat shaped bone at the medial side of the foot is called the _______. navicular
The three medial tarsal bones between navicular, metatarsals and cuboid are _______. cuneiforms
Inversion (varus) of the foot is when the bottom of the foot is faced medially
Eversion (valgus) of the foot is when the bottom of the foot is faced laterally
what type of joints are IP joints hinge (flexion and extension)
what type of joints are TMT,intertarsal plane or gliding (limited movement)
what type of joints are MTP ellipsoidal or condyloid, (4 movements)
What anatomy is best demonstrated on a medial oblique foot? cuboid, metatarsals 3-5, sinus tarsi and lateral cuneiform
What anatomy is best demonstrated on a lateral oblique foot? base of 1st metatarsal and medial tarsals
Why is it better to do a lateromedial lateral foot projection? the foot naturally falls into a true lateral position
What is the calcaneal sulcus? A deep depression between mid and post articular surfaces
Name of the space below the subtalar and talocalcaneal joints Sinus Tarsi
Which Tarsal articulates with the 4th and 5th metatarsals? Cuboid
What tarsals make up the transverse arch? 3 cuneiforms and cuboid
What is an Aviator's Fx? Fx in talar neck after impact pushes foot upwards
What is a Jones Fx? Avulsion Fx at base of 5th metatarsal
What is a Pott's Fx? Avulsion Fx at medial malleolus (near tuberosity)
What view best shows a Jones' Fx? Foot Medial Oblique
What is a Lisfranc Injury? Fx and dislocation of midfoot with lateral displacement of metatarsals.
Why is AP Axial Toe recommended over AP Toe? For open joint spaces and reduce foreshortening
What joints are open for the AP Oblique Toes? MTP 2-5 and IP
What position best shows the 4th and 5th digits? AP lateral oblique
Which lateral is used for digits 1-3 and which is used for 4-5? 1-3 is lateromedial and 4-5 is mediolateral
How is the CR angled for an AP Axial foot? 10 degrees proximal
What superimposition is different between the AP and AP Oblique Foot? In oblique, base of 3-5th metatarsals are NOT superimposed
What is demonstrated on a Lateral Foot projection? talus, calcaneus, talocalcaneal and talotibial joints without superimposition
How can you tell which way a foot is obliqued in a film? There is more soft tissue and midshaft concavity on the side AWAY from the IR
Where are the sesamoid bones found in the foot? Plantar surface of first MTP joint within tendons
What is the difference between AP and AP Axial Toe positions? CR for AP is perp to IR, CR for Axial is 10-15 degrees posterior or perp if foot is on 15 degree wedge
What is the preferred projection to view the sesamoids? Lewis
How is the pt positioned for the Lewis projection? Prone and foot is dorsiflexed so plantar surface is at a 15-20 degree angle from vertical
Where is the CR for a Lewis projection? At first MTP joint
What is the view of the sesamoids that is easier for pt but not preferred? and why? Holly because there is increased OID
Why is an AP Weight Bearing Foot performed? To evaluate the tarsals, metatarsals , arches and hallux vagus
What projection is best to view a Lisfranc Fx? AP Weight Bearing
What is the accepted angle and ideal angle for an AP Weight Bearing foot? Accepted: 15, Ideal: 10
What is evaluated with the Lateral Weight-Bearing Foot? Longitudinal arches
Created by: 1159767578