Anterior Thigh Part 3 Flashcards
(64 cards)
1
Q
Anterior thigh muscles
A
- Sartorius
- Quadriceps
- Rectus femoris
- Vastus lateralis
- Vastus intermedius
- Vastus medialis
- Articularis genu
- Tensor fascia latae
2
Q
Sartorius
A
- 2 joint muscle
- Longest muscle in the body
- Travels from anterolateral thigh to posteromedial knee
3
Q
Sartorius origin
A
- ASIS
4
Q
Sartorius insertion
A
- Medial aspect of proximal tibia
- Contributes to pes anserinus
5
Q
Sartorius innervation
A
- Femoral nerve
6
Q
Sartorius blood supply
A
- Femoral artery
7
Q
Sartorius function
A
- Flex/abduct/lateral rotate thigh (hip)
- Flex the leg (knee)
- Tailors muscle
8
Q
Quadriceps
A
- Group of 4 muscles that form the bulk of anterior compartment
9
Q
4 muscles contributing to quadriceps
A
- Rectus femoris
- Vastus medialis
- Vastus intermedius
- Vastus lateralis
10
Q
Quadriceps function
A
- Function together as knee extensors
11
Q
Quadriceps converge to form
A
- Patellar (quadriceps) tendon
- Attaches to patella
12
Q
Patellar ligament
A
- Spans from the patella to the tibial tuberosity
- Some people also call the patellar ligament the patellar tendon
13
Q
Quadricep muscles (all 4) innervation
A
- Femoral nerve, posterior division
14
Q
Rectus femoris
A
- 2 heads (origins)
- 2 joint muscle, also a hip flexor
15
Q
Rectus femoris origin
A
- Straight (direct) head – ASIS
- Reflected (indirect) head – ilium rim of acetabulum
16
Q
Rectus femoris insertion
A
- Base of patella
- Tibial tuberosity (via patellar ligament)
17
Q
Rectus femoris blood supply
A
- Lateral femoral circumflex (directly and via its descending branch)
18
Q
Rectus femoris function
A
- Extend leg
- Flex thigh
19
Q
Most commonly strained quadriceps muscle
A
- Rectus femoris
20
Q
Vastus lateralis origin
A
- Superior aspect of intertrochanteric line
- Anterior/inferior aspect of greater trochanter
- Gluteal tuberosity
- Lateral lip of linea aspera
- Intermuscular septum
21
Q
Vastus lateralis insertion
A
- Lateral patellar border (patellar tendon)
- Tibial tuberosity (via patellar ligament)
- Tibia (via lateral patellar retiaculum)
22
Q
Vastus lateralis blood supply
A
- Descending branch of lateral femoral circumflex artery
- Superior lateral genicular artery
23
Q
Vastus lateralis function
A
- Extend leg
- Pull patella laterally
24
Q
Vastus intermedius located
A
- Deep to rectus femoris
25
Vastus intermedius origin
- Superior 2/3 of anterior and lateral shaft of femur
| - Intermuscular septum
26
Vastus intermedius insertion
- Base of patella (patellar tendon)
| - Tibial tuberosity (via patellar ligament)
27
Vastus intermedius blood supply
- Descending branch of lateral femoral circumflex artery
28
Vastus intermedius function
- Extend the leg
29
Vastus medialis
- “Teardrop” visible and palpable above medial knee
30
Vastus medialis origin
- Inferior aspect of intertrochanteric line
- Spiral line
- Medial lip of linea aspera
- Superior medial supracondylar line
- Intermuscular septum
31
Vastus medialis insertion
- Medial patellar border (patellar tendon)
- Tibial tuberosity (via patellar ligament)
- Tibia (via medial patellar retinaculum)
32
Vastus medialis blood supply
- Femoral artery
- Profunda femoris
- Superior medial genicular atery
33
Vastus medialis function
- Extend the leg
| - Pull patella medially
34
The quadriceps aponeuroses, IT band, sartorius contribute to
- Medial and lateral patellar retinacula
35
Medial and lateral patellar retinacula are fibrous expansions that
- Attach to the patella and tibia
| - Reinforce joint capsule of the knee and help stabilize patella
36
Articularis genu
- Very small
| - Deep to vastus intermedius
37
Articularis genu origin
- Distal shaft of femur
38
Articularis genu insertion
- Suprapatellar bursa/synovial membrane
39
Articularis genu function
- Pulls suprapatellar bursa superiorly
| - Prevents compression within knee joint with extension
40
Tensor fascia latae
- Found on the lateral thigh
| - Can be grouped with the gluteal muscles based on innervation
41
Tensor fascia latae origin
- Lateral lip of iliac crest from ASIS to tubercle of iliac crest
42
Tensor fascia latae insertion
- Iliotibial band (the band attaches to Gerdy’s tubercle on the lateral proximal tibia)
43
Tensor fascia latae innervation
- Superior gluteal nerve
44
Tensor fascia latae bloody supply
- Ascending branch of lateral femoral circumflex artery
| - Superior gluteal arteries
45
Tensor fascia latae function
- Flex/abduct and medially rotate thigh
| - Stabilize hip & knee during gait
46
Femoral nerve (L2-4) pathway
- Enters thigh by passing deep to inguinal ligament
- Through the muscular lacuna
- Between psoas major and iliacus
- Lateral to femoral vessels, outside of femoral sheath, within femoral triangle
47
Femoral nerve (L2-4) innervates
- Anterior thigh muscles
| - Hip and knee joints, cutaneous
48
Femoral nerve branches
- Nerve to Iliacus
- Nerve to Pectineus
- Anterior division (3)
49
Femoral nerve anterior division
- Medial femoral cutaneous (L2,3)
- Intermediate femoral cutaneous (L2,3)
- Nerve to sartorius
50
Medial femoral cutaneous (L2,3) pathway
- Follows along with Sartorius
51
Medial femoral cutaneous (L2,3) supplies
- Anteromedial thigh
- Superior medial knee
- Contributes to Patellar and Subsartorial plexuses
52
Intermediate femoral cutaneous (L2,3) supplies
- Supplies central anterior thigh
| - Contributes to Patellar plexus
53
Femoral nerve posterior division
- Saphenous nerve
- Branches to quadriceps femoris muscles
- Branch to knee and hip joinrs
54
Saphenous nerve (L3,4) pathway
- Travels with femoral vessels in adductor canal
| - Becomes superficial inferomedial thigh
55
Saphenous nerve (L3,4) supplies
- Skin of medial half of leg and patellar surface
- Contributes to Patellar and Subsartorial plexuses
- Medial side of the foot (portion of the medial arch)
56
Branches to quadriceps femoris muscles
- They are named by what they intervate
| - Nerve to vastus intermedius, etc…
57
Adductor canal (Subsartorial canal, Hunter’s canal)
- Located middle 1/3 of thigh, deep to Sartorius
- Between anterior and medial compartments
- Begins at apex of femoral triangle, ends at the aductor hiatus
58
Adductor canal (Subsartorial canal, Hunter’s canal) boundaries
- Anterolateral: vastus medialis
- Posterior: adductor longus and adductor magnus
- Anteromedial: Sartorius muscle
59
Adductor canal (Subsartorial canal, Hunter’s canal) contents
- Femoral artery/vein
- Nerve to vastus intermedius
- Saphenous nerve
60
Femoral artery in adductor canal
- Becomes anterior to vein inferiorly
61
Femoral vein in adductor canal becomes
- Descending genicular artery
62
Most lateral content in adductor canal
- Nerve to vastus medialis
| Most lateral in adductor canal
63
Saphenous nerve in adductor canal
- Will pierce fascia and become cutaneous
- Travels with great saphenous vein
- Does not pass through adductor hiatus
64
At adductor hiatus, femoral vessels pass through and become
- Popliteal vessels (in popliteal fossa)
