Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
39 Cards in this Set
- Front
- Back
Sacrospinous Ligament
|
-Sacrum/coccyx to ishial spine
-Converts the greater sciatic notch into a greater sciatic forament |
|
Sacrotuberous Ligament
|
-Sacrum/coccyx to ischial tuberosity
-Converts lesser sciatic notch into a lesser sciatic foramen -Obturator membrane and canal -Obturator foramen |
|
Femoral N.
|
-Anterior compartment
-Flexes thigh and extends leg -Runs under inguinal ligament into femoral triangle |
|
Sciatic N.
|
-Posterior compartment
-Extends thigh and flexes leg -Greater sciatic foramen |
|
What compartment does the sciatic n. run in?
|
Posterior compartment
|
|
What compartment does the femoral n. run in?
|
Anterior compartment
|
|
Obturator N.
|
-Medical compartment thigh
-Thigh adductors -Obturator n. through the obturator foramen -Accompanied by obturator a.(branch internal iliac a.) |
|
What are the three nerves of the thigh
|
Femoral N
Sciatic N Obturator N |
|
Sacral plexus
|
-Sciatic nerve that innervates posterior thigh m. and all muscles below the knee
-Exits via the greater sciatic foramen |
|
What nerves does the Sciatic nerve form?
|
-Tibial N.
-Common fibular N. |
|
What are the branches of the Sacral plexus?
|
Innervates
-gluteal m. -superior gluteal n. -inferior gluteal n. -branches to piriformis m. -posterior cutaneous n. of the thigh -n. to small external rotator m. pudendal n. |
|
What 3 groups do the thigh muscles divide into?
|
-Anterior group
-Medial or adductor group -Posterior group = hamstrings |
|
Anterior group
(Thigh muscles) |
-Flexion of hip and extension of knee
-Femoral n. |
|
Medial or adductor group
(thigh muscles) |
-Adduction and flexion of thigh
-Obturator n. |
|
Posterior group = hamstring
|
-Extension at hip
-Flexion at knee -Sciatic n. |
|
What is the thigh m. deep fascia?
|
Fascia lata
|
|
The lateral side thigh becomes known as what tract
|
Iliotibial tract
|
|
Inguinal ligament
|
-Lower edge aponeurosis of abdominal m.
-Marks boundary between abdomen and thigh -Runs between the ilium and pubis |
|
Tnsor fascia latae m.
|
origin: anterior iliac crest ASIS
insertion: iliotibial tract innervation: superior gluteal n. action: flex & abduct thigh, medial rotation thigh |
|
Gluteus maximus m.
|
origin: dorsal ilium, sacrum & coccyx
insertion: iliotibial tract, gluteal tuberosity femur innervations: inferior gluteal n. Action: extends thigh (major function), lateral rotation thigh, abduct thigh |
|
Gluteus medius m.
|
origin: upper ilium
insertion: greater trochanter femur innervation: superior gluteal n. action: abducts & medial rotation thigh, stabilizes pelvis with gait. |
|
Gluteus minimus m.
|
origin:outer aspect ileum
insertion:greater trochanter femur innervation: superior gluteal n. action: abducts & medial rotation thigh |
|
Piriformis m.
|
origin: sacrum
insertion: greater trochanter femur innervation: S1 & S2 action :laterally rotates thigh |
|
Quadratus femoris m.
|
origin: ischial tuberosity
insertion: intertrochanteric crest innervation: n. quadratus femoris m. action: lateral rotation thigh |
|
Obturator internus m.
|
origin: obturator membrane & bone around it on internal surface
insertion: medial surface greater tochanter innervation: n. to obturator internus action :laterally rotates thigh, abduction if thigh flexed |
|
Superior gemellus m.
|
origin: ischial spine
insertion: obturator internus tendon innervation: n. to obturator internus action :laterally rotates thigh, abduction if thigh flexed |
|
Inferior gemellus m.
|
origin: ischial tuberosity
insertion: obturator internus tendon innervation: n. quadratus femoris m. action :laterally rotates thigh, abduction if thigh flexed |
|
What does the Superior gluteal n. and blood vessels supply?
(via greater sciatic foramen superior to piriformis m.) |
-Supply both gluteus medius and minimus m.
|
|
Inferior gluteal n. and blood vessels (via greater sciatic foramen inferior to piriformis m.
|
-Supply gluteal maximus m.
|
|
Gluteal and posterior thigh nerves:
|
Sacral-coccygeal plexuses
|
|
Sacral-coccygeal plexuses
|
-Sciatic nerve - - innervates posterior thigh m. & all muscles below the knee
- form tibial n. & common fibular n. -Branches innervate gluteal m. - superior gluteal n. - inferior gluteal n. - n. to periformis m. - posterior cutaneous n. of thigh - n. to Quadratus femoris & Inferior gemellus - n. Obturator internus m. & Superior gemellus m. |
|
Piriformis syndrome:
|
Pain in buttocks especially when sitting
Possible cause of sciatica Irritation sciatic n. at piriformis m. can compress sciatic nerve between ischium & greater trochanter if tight |
|
Semitendinosus m.
|
origin: ischial tuberosity
insertion: medial proximal tibia at pes anserinus innervation: tibial part sciatic n. action: extends thigh, flexes knee, medially rotates leg |
|
Semimembranosus m.
|
origin: ischial tuberosity
insertion: medial condyle tibia innervation: tibial part sciatic n. action: extends thigh, flexes knee, medially rotates leg |
|
Biceps femoris m.
|
origin:long head - ischial tuberosity
short head - linea aspera & lateral intermuscular septum insertion:head fibula innervation: long head- tibial part sciatic n.; short head- common fibular part sciatic n. action: extends thigh, flexes knee, laterally rotates leg |
|
What are the vessels of the posterior thigh?
|
-No vessels specifically responsible for posterior compartment
-perforating branches of the deep artery of the thigh is the profunda femoris a. -chain of longitudinal anastomoses also supply hip joint and knee joint |
|
Iliofemoral ligament
|
-maintains erect posture without muscle action
-prevents overextension |
|
Pubofemoral ligament
|
-prevents over abduction of femur
|
|
Ischiofemoral ligament
|
-prevents over extension
-spiral of the ligament decreases with flexion and is increased with extension |