Medial Thigh Flashcards
(51 cards)
1
Q
Medial thigh muscles (names)
A
- Pectineus
- Adductor longus
- Adductor brevis
- Adductor magnus
- Gracilis
2
Q
Medial thigh muscle commonalities
A
- Most attach proximally to pubic bone and ischiopubic ramus
- Most innervated by obturator nerve
- Distal attachment is on the femur
3
Q
Medial thigh muscles functions
A
- Hip adduction
- Hip flexion
4
Q
Pectineus
A
- Anterior to obturator externus
- Can be grouped with anterior compartment muscles
5
Q
Pectineus origin
A
- Pectineal line of pubic bone (pectin pubis)
6
Q
Pectineus insertion
A
- Pectineal line of femur
7
Q
Pectineus innervation
A
- Femoral nerve or accessory obturator or both
8
Q
Pectineus bloody supply
A
- Obturator artery
- Medial femoral circumflex artery
9
Q
Pectineus function
A
- Flexion/adduction/medial rotation of thigh
10
Q
Adductor longus origin
A
- Pubic body (below pubic crest)
11
Q
Adductor longus insertion
A
- Middle 1/3 of medial lip of linea aspera
12
Q
Adductor longus innervation
A
- Obturator nerve (anterior branch)
13
Q
Adductor longus blood supply
A
- Obturator artery
- Profunda femoris
- Medial femoral circumflex artery
- Femoral artery
14
Q
Adductor longus function
A
- Adduct/flex thigh (especially when extended)
15
Q
Most commonly strained adductor muscle, “pulled groin”
A
- Adductor longus
16
Q
Adductor brevis is a landmark for
A
- Anterior/posterior branches of obturator nerve
17
Q
Adductor brevis origin
A
- Inferior pubic ramus
- Pubic body
18
Q
Adductor brevis insertion
A
- Pectineal line of femur
- Superior aspect of medial lip of linea aspera
19
Q
Adductor brevis innervation
A
- Obturator nerve (anterior branch)
20
Q
Adductor brevis blood supply
A
- Obturator artery
- Medial femoral circumflex artery
21
Q
Adductor brevis function
A
- Adduct/flex the thigh (especially when extended)
22
Q
Adductor magnus fiber orientation
A
- Superior muscle fibers are oriented transversely (adductor minimis)
- The middle fibers are oriented at an oblique angle
- The inferior fibers are oriented vertically (hamstring part)
- Hamstring part is palpable at medial knee
23
Q
Adductor magnus origin
A
- Inferior part of inferior pubic ramus
- Ischial ramus
- Ischial tuberosity
24
Q
Adductor magnus insertion
A
- Gluteal tuberosity
- Linea aspera
- Medial supracondylar line
- Adductor tubercle
25
Adductor magnus innervation
- Posterior branch of obturator nerve (adductor part)
| - Tibial part of sciatic nerve (hamstring part)
26
Adductor magnus blood supply
- Femoral a.
- Medial femoral circumflex a.
- Perforating arteries (profunda femoris)
- Obturator a.
- Popliteal a.
27
Adductor magnus function
- Adduct thigh
- Extend the thigh (hamstring part)
- Can also flex thigh
28
Adductor hiatus
- Opening between the hamstring portion and the femur
| - Femoral vessles > popliteal vessels
29
Gracilis muscle
- Most medial and superficial
| - 2 joint muscle
30
Gracilis origin
- Inferior pubic body
- Inferior pubic ramus
- Pubic symphysis (sometimes)
31
Gracilis insertion
- Proximal aspect of medial tibia
| - Part of pes anserinus
32
Gracilis innervation
- Obturator nerve (anterior branch)
33
Gracilis blood supply
- Obturator artery
- Medial femoral circumflex artery
- Profunda femoris
34
Gracilis function
- Thigh adduction
| - Flex and medial rotate leg
35
Obturator artery
- Branch of the internal iliac
| - Exits pelvis through obturator canal
36
Obturator artery supplies
- Medial compartment
37
Obturator artery anastomoses with
- Medial femoral circumflex artery
| - Inferior gluteal arteries
38
Obturator artery branches
- Anterior branch
| - Posterior branch
39
Anterior branch of obturator artery anastomoses with
- Posterior branch
40
Posterior branch of obturator artery supplies
- Procimal aspect of hamstrings
| - Acetabular artery
41
Acetabular artery pathway
- Passes through acetabular notch
- Deep to transverse acetabular ligament
- Can also arise from MFC
42
Acetabular artery gives off
- Artery of ligamentum teres femoris
| - Major supplier of femoral head in the young child (less than 3)
43
Obturator nerve (L2-4)
- Enters thigh by passing through the obturator canal
| - 2 branches
44
Branches of obturator nerve
- Anterior branch (anterior to adductor brevis)
| - Posterior branch (posterior to adductor brevis)
45
Anterior branch (anterior to adductor brevis) innervates
- Skin over medial thigh
- Hip joint
- Adductor longus
- Gracilis
- Adductor brevis
- Contributes to subsartorial plexus
46
Posterior branch (posterior to adductor brevis) innervates
- Can supply adductor brevis, less common
- Obturator externus
- Adductor magnus (adductor part)
- Knee joint
47
Patellar plexus innervation
- Cutaneous innervation around patella
48
Subsartorial plexus innervation
- Located deep to sartorius
- Around distal part of adductor longus
- Cutaneous innervation medial thigh
49
Obturator externus function
- Thigh adduction
50
Nerves of patellar plexus
- Intermediate femoral cutaneous
- Medial femoral cutaneous
- Lateral femoral cutaneous
- Saphenous nerve (infrapatellar branch)
51
Nerves of the subsartorial plexus
- Anterior branch of obturator nerve
- Medial femoral cutaneous nerve
- Saphenous nerve
