Unit 4-Lower Extremity Flashcards
What direction does the femoral neck extend from the head?
Extends infero-laterally from the head
What direction does the superior portion of the greater trochanter project in relation to the head of the femur?
The superior portion of the greater trochanter projects above the neck and curves slightly posteriorly and medially
T/F
The femur provides attachments for several muscles of the gluteal region.
True
What is the site of insertion for the tendon of the iliopsoas muscle?
The lesser trochanter of the femur
What is the prominent ridge extending posteriorly between the trochanters at the base of the neck?
intertrochanteric crest
Where is the the lesser trochanter located?
At the medial portion of the proximal shaft
What is the gluteal tuberosity an attachment site for?
The gluteal tuberosity is an attachment site for the gluteus maximus muscle
What four muscles make up the Anterior Thigh Compartment?
- Iliopsoas
- Sartorius
- Quadriceps Femoris
- Tensor Fascia Latae
Act to flex the hip joint & extend the knee joint
In what direction does the Psoas muscle travel within the pelvis?
Psoas muscle courses inferiorly within the pelvis under the inguinal ligament to enter the anterior compartment of the thigh.
What muscle is located directly anterior to the head of the femur?
Iliopsoas
What does the tendon of the psoas join with to pass anterior to the hip and insert at the lesser trochanter?
Tendon of the psoas joins the tendon of the iliacus muscle to pass anterior to the hip and insert at the lesser trochanter
What area of the pelvis does the Iliacus arise from?
iliac fossa
Where is the Iliacus located in relation to the PSOAS muscle in the pelvis?
Loacted on the lateral aspect of the PSOAS in the pelvis?
T/F
The Iliopsoas is more deep at the proximal end
False; The Iliopsoas is more superficial at the proximal end
What is the most superficial muscle located at the proximal end of the femur?
Sartorius
T/F
The Sartorius is the longest muscle
True
What is the origin and insertion of the Sartorius muscle?
Origin: ASIS
Insertion: Medial surface of the tibia.
In what direction does the Sartorius muscle run?
Runs in a supero-lateral to infero-medial direction.
What is the Quadriceps Femoris made of?
Rectus femoris
Vastus lateralis
Vastus medialis
Vastus intermedius
What do the inferior tendons of the Quadriceps Femoris join to form? What do they turn into? At what structure?
All inferior tendons merge to form the quadriceps tendon that courses over the patella and continues as the patellar ligament of the knee
What is the origin of the Rectus femoris?
AIIS
What is the origin of the Vastus lateralis?
Greater trochanter
What is the origin of the Vastus medialis?
Intertrochanteric line
What is the origin of the Vastus intermedius?
Anterior and lateral surfaces of the femur
What muscle is this describing?
Short, thick, tear drop shaped muscle
Tensor Fascia Latae (TFL)
Where is the Tensor Fascia Latae (TFL) located?
Located on the anterolateral aspect of the thigh, enclosed between two layers of fascia
What is the origin and inserton of the Tensor Fascia Latae (TFL)?
Origin: ASIS and the anterior part of the iliac crest
Insertion: iliotibial (IT) band
What is the insertion of the gluetus maximus?
iliotibial (IT) band
What is this describing?
Wide band of fascia that lies over the muscles on the outer surface of the thigh
IT band
What is the origin and insertion of the IT band?
Origin: tendinous fibers of the TFL and the gluteus maximus
Insertion: lateral condyle of the tibia
What muscle is deep to the lateralis?
intermedius
What is the Intermedius is covered by anteriorly?
Intermedius is covered by the rectus femoris anteriorly
What 3 muscles make up the Posterior Thigh Compartment?
Semitendinosus
Semimembranosus
Biceps Femoris