Procedures Lower Limb review for final exam Flashcards
How many metatarsals are on one foot?
5
How many tarsals on one foot?
7
Total number of bones on one foot?
26
How many phalanges on one foot?
14
It is palpable and common site of foot trauma
Tuberosity on the Base of 5th metatarsal
The longest and strongest tarsal bone
Calcaneus
Joint found between the talus and calcaneus
Talocalcaneal joint or subtalar joint
Small opening found in the middle of the talocalcaneal joint where nerves and blood vessels pass through
Sinus tarsi
Tarsal bone that forms an aspect of the ankle joint
Talus
Smaller cuneiform
Intermediate cuneiform
Largest cuneiform
Medial cuneiform
Articulates with second, third, and fourth metatarsal
Lateral cuneiform
The most superior tarsal bone
Talus
Which cuneiform Articulates with first metatarsal?
Medial cuneiform
Common site for bone spur
Calcaneus
Second largest tarsal bone
Talus
The Calcaneus articulates with what two tarsals?
Talus and cuboid
What are the two arches of the foot?
Longitudinal and transverse
Which three bones make up the ankle joint
Talus Fibula Tibia
The distal tibial joint surface forming the roof of the distal ankle joint is called
Tibial plafond
The ankle joint is classified as a synovial joint with what type of movement
Sellar
Weight bearing bone of the leg
Tibia
Small, triangular depression located on the tibia that forms distal tibiofibular joint
Fibular notch
The articular facet of proximal tibia is also referred to as
Tibial plateau
The articular facets slope how many degrees posteriorly
10-15 degrees
Name the 3 articular facets
Posterior, middle, anterior
The medial proximal aspect of the calcaneus has a large, prominent bony process called…
Sustentaculum tali
The most proximal aspect of fibula or the head of the fibula articulates with______
Lateral condyle. ( inferior part )
The extreme distal end of fibula
Lateral malleolus
The extreme distal end of tibia
Medial malleolus
Name of the largest sesamoid bone
Patella
What are two other names for the patellar surface of the femur
Torchlear groove or intercondylar sulcus
The name of the depression located between the condyles of the posterior aspect of distal femur
Intercondylar fossa or notch
Why is the CR angled 5-7 degrees cephalad for lateral knees
Because the medial condyle extends lower than the lateral condyle of the femur. The angle superimposes the condyles
The slightly raised area located on the posterolateral aspect of the medial femoral condyle is called
Adductor tubercle
What are the two palpable bony landmarks found on the distal femur
Medial and lateral epicondyles
The general region of the posterior knee is called
Popliteal region
For which large muscle does the patella serve as a pivot to increase leverage
Quadriceps femoris muscle
The circular fibrocartilage discs or pads that lie on the tibial plateau’s are called the______
Menisci
When the ASIS to tabletop measurement is greater than 24 cm, the central ray angulation for an AP knee is—-
5 degrees cephalad
Which anatomical part must be identified on a lateral radiograph of the knee in order to identify over or under rotation?
Adductor tubercle
Why is it a disadvantage to over flex the knee for a lateral projection?
The patella is drawn into the intercondylar sulcus
What is the position of the femoral condyles when the leg is properly positioned for an AP projection?
Parallel to the IR
The proximal end of the tibia presents two prominent processes called the:
Condyles
In order to place the patella parallel with the plane of the IR for APA projection the heel must be rotated_________degrees _________
5 to 10, Laterally
An inflammatory condition involving the anterior, proximal tibia usually occurs in boys 10-15 years old.
Osgood-schlatter disease
Also known as osteitis deformans; non-neoplastic bone disease that disrupts new bone growth resulting in over production of very dense yet soft bone
Paget’s disease
Malignant tumor of the cartilage
Chondrosarcoma
Inherited type of arthritis that commonly affect males; Uric acid appears in excessive quantities in the blood. Common initial attacks occur in first MTP joint
Gout
Benign, neoplastic bone lesion caused by overproduction of bone at a joint
Exostosis
Benign bone lesion usually developing in teens or young adults
Osteoid osteoma
Most prevalent primary bone malignancy in pediatric patients
Ewing’s sarcoma
Benign, neoplastic bone lesion filled with clear fluid
Bone cyst
Injury to large ligament located between the bases of the first and second metatarsal
Lisfranc joint injury
Condition affecting the sacroiliac joints and lower limbs of young men, especially the posterosuperior margin of the calcaneus
Reiter’s syndrome
The formal name for runners knee
Chondromalacia patellae
What is another term for osteomalacia
Rickets
Asymmetric erosion of joint spaces with calcaneal erosion
Reiter’s syndrome
Uric acid deposits in joint spaces
Gout
Well circumscribed lucency
Bone cyst
Small, round/oval density with Lucent center
Osteoid osteoma
Narrowed, irregular joint surfaces with sclerotic articular surfaces
Osteoarthritis
Fragmentation or detachment of the tibial tuberosity
Osgood-Schlatter disease
ill-defined area of bone destruction with surrounding “onion peel”
Ewing’s sarcoma
Decreased bone density and bowing deformities of weight bearing limbs
Osteomalacia
Why is the CR angled 10-15 degrees toward calcaneus for AP projection of toes
Opens IP joints and MTP joints
CR centered for projection of foot
Base of 3rd metatarsal
Which projection is best for sesamoid bones of the foot
Tangential projection
Rotation can be determined on an AP foot by near equal distance between __________ metatarsals
2-5th
Why should CR be perpendicular to the metatarsals for AP of foot
Opens up MTP joints and certain intertarsal joints
Which oblique projection of the foot best shows majority of tarsal bones
AP oblique with medial rotation
Which projection will place the foot into a true lateral position
Lateromedial
Which type of study is best for longitudinal arches of the foot
AP and lateral weight bearing
How should the CR be angled for axial projection of calcaneus
40 degrees cephalad
Which calcaneal structure should appear medically on a well positioned plantodorsal axial projection
Sustentaculum tali
Where is CR placed for mediolateral projection of calcaneus
1 inch inferior to medial malleolus
How much should the foot and ankle be rotated for an AP mortise
15-20 degrees medial rotation
Which projection of the ankle best demonstrates a possible fracture of lateral malleolus
AP oblique with medial rotation of 45 degrees
Which projection of the ankle require forced inversion and eversion movements
AP stress
A common place for bone spurs?
The tuberosity of the calcaneus
Where can you find the sustentaculum tali?
On the medial side of the calcaneus under the middle articular surface or facet.
Which articular facet is provides medial support for weight bearing?
Middle articular facet
The three articular facets are named ____,_____,_____,and they make up the________joint
Posterior, anterior, middle,. Subtalar.
Which of the three articular facets of the subtalar joint is the largest?
The posterior
A deep depression between the posterior and middle articular facets
Calcaneal sulcus
Which of the tarsal bones takes the weight of the body?
The talus which is the second largest tarsal bone
Which 4 bones articulate with the talus?
Tibia and fibula superiorly, calcaneus inferiorly, navicular anteriorly
Which 4 bones articulate with the navicular?
The three Cuneiforms anteriorly and the talus posteriorly.
Which Cuneiform is the smallest?
Intermediate
Which 4 bones articulate with the cuboid?
The calcaneus proximally, Cuneiform medially, and the fourth and fifth metatarsal’s distally. (sometimes the navicular)
The inferior parts of the Tibia and fibula form a deep socket or a three sided opening called___________.
Mortise
If you were to look at a picture of the ankle joint internally rotated 15° you would see that the ________fits into the __________.
Top of the talus , mortise
In what position are the lateral and medial malleoli in a true lateral?
In a true lateral ankle the lateral malleolus is 1 cm or 1/2 an inch posterior to the medial malleolus
How many degrees must the leg and ankle be rotated to bring the malleoli parallel to the IR?
15-20 degrees
Why are AP stress views done of the ankle joint?
To evaluate the stability of the mortise joint space.
Which bone does the patellar ligament attach to?
Tibia
What 2 joints are part of the knee?
Femorotibial and patellofemoral
The proximal fibula articulates with the femur in one way…..via the _____________.
Fibular lateral collateral ligament. Because of this proximal fibula not part of the actual knee joint
What are the 4 major knee ligaments?
MCL, PCL, ACL, LCL
The two collateral ligaments are ______and ________and they prevent _____________at the knee
LCL and MCL. Adduction and abduction
2 cruciate ligaments are _________and ___________and they prevent ___________
PCL and ACL Anterior or posterior movement
What ligament sits in front of the infra patellar fat pad and protects the anterior knee joint?
The patellar ligament
Which projections are performed for toes?
AP. Oblique. Lateral. And sesamoids tangential which is a special
What projections are done for the foot?
AP. Oblique and lateral AP/lat wt bearing for special
What projections are done for calcaneus?
Plantodarsal (axial). And lateral
What projections are done for the ankle?
AP. AP mortise. Lateral. And 45 degree oblique AP stress for special
What projections are done for tib/fib?
AP. Lateral
What projections are done for the knee?
AP, oblique, lateral. Special: AP or pa wt bearing Pa axial wt bearing (Rosenberg)
Which projections are done to see the intercondylar fossa of the knee?
AP axial Beclere method PA axial- camp Coventry and homblad
Which projections are done to see the patella and femoropatellar joint?
PA Tangential ( merchant) Lateral Tangential- inferosuperior proj- hughston, settegast, Hobbs
what term describes the top or anterior surface of the foot?
dorsum
where would the interphalangeal joint be found in the foot?
between the phalanges of the first digit
what structure or bone contains the sustentaculum tali
calcaneus
where is the adductor tubercle located?
on the posterior aspect of the medial femoral condyle
how much CR angle should be used for in AP axial projection of the toes? ( if any)
10 to 15° toward calcaneus
if the fibular head appears less superimposed by the tibia than a true lateral in a lateral knee radiograph it is said to be……______
over rotated toward the IR
to properly see the joint spaces with the AP projection of the foot the CR must be:
perpendicular to the metatarsals
which joint surfaces of the ankle joint are open with a true AP projection of the ankle?
medial and superior
how much angle is used with a mortise ?
15 to 20°
what is the major disadvantage of using a 45° flexion for the lateral projection of the knee?
draws the patella into the Intercondylar sulcus
how much flexion of the knee is recommended for the lateral projection of the patella?
5 to 10° or less
how much flexion of the knee is required for settegast method?
90 degrees
in an AP ankle projection what joint spaces should be open?
superior and medial joint spaces
The posterior visibility of the adductor tubercle on a lateral knee projection indicates:
under rotation of the knee toward the IR
how much flexion of the knee is required for settegast method?
90 degrees
in an AP ankle projection what joint spaces should be open?
superior and medial joint spaces
The posterior visibility of the adductor tubercle on a lateral knee projection indicates:
under rotation of the knee toward the IR
which projection of the Intercondylar fossa would provide the best results without injuring a patient who is unsteady.
Camp Coventry method
which projections best demonstrates signs of Osgood schlatter disease?
AP and lateral knee
what projection of the patella requires the patient to be placed in a prone position a 45° flexion of the knee and a 15 to 20° angle of the CR
Hughston method
which position would clearly demonstrate the cuboid
AP oblique in medial rotation
what is the position of the femoral condyle’s when the leg is properly positioned for AP projection?
they are parallel to the Ir
The central ray angle for a lateral knee is…
5 to 7° cephalad
what projection best shows narrowing of a joint space?
AP of both knees with weight-bearing
what are the two flat like superior surfaces of the tibia
Tibial plateaus 10 degree
and evulsion fracture of the base of the fifth metatarsal Is also called a_______fx
jones
what projections best demonstrate Lisfranc joint injuries?
Weight bearing foot series
what is another name for osteomalacia?
Rickets
what is the radiographic hallmark of Reiters syndrome seen in young men?
erosion of the Achilles tendon insertion
what is another term for Osteochondroma?
exostosis
True or false: a correctly positioned lateral ankle will show the lateral malleolus superimposed over the posterior half to posterior third of the tibia
true
List the joints of the feet
DIP PIP MTP TMT IP