ANATOMY - LL Flashcards
Iliopsoas Inervation
FERMORAL NERVE (ILIACUS) & DIRECT BRANCHES FROM THE LUMBAR PLEXUS (L1-L3
Iliopsoas origin and insertion
ORIGIN
PSOAS MAJOR: VERTEBAL BODIES AND COSTAL PROCESSES OF L1-L5
ILIACUS: ILIAC FOSSA
Insertion
LESSER TROCHANTER OF THE FEMUS
Iliospoas action
Flexion of thigh at hip joint
External rotation of thigh
ALSO:
- trunk flexion and lateral bending
Gluteus Maximus innervation
inferior gluteal nerve
Gluteal maximus Origin and insertion
Origin: lateral sacrum, posterior gluteal surface and thoracolumbar fascia
Insertion
- ITT and gluteal tuberosity (on femur)
MOA Gluteal maximus
hip extensor and external rotation of the hip
Note:
Upper fibers: ABDUCt
Lower fibres: ADDUCT
Gluteus medius innervation
superior gluteal nerve
Gluteus medius MOA
Abduction
Internal rotation
Anterior part - flexion
Posterior part - Extension and External rotation
Gluteus medius Origin and insertion
Origin - gluteal surface of the ilium
Insertion
lateral surface of great trochanter
gluteus minimus O and I
Origin: gluteal surface of ilium
Inserts: anterolateral surface of greater trochanter
gluteus minimus innervation
superior gluteal nerve
MOA gluteus minimus
ABDUCTIOn and internally rotation
anterior part - flexion
posterior [art- extension and external rotation
TENSOR FACIA LATA innervation
Superior gluteal nerve
TFL origin and insertion
Origin - ASIS
Inserts - iliotibial tract
Action of TFL
Hip ABDUCTION
Hip Flexion
Hip internal rotation
FIA
Quadriceps femoris origin
Rectus femoris: AIIS
Vests lateralis : LATERAL GREATER TROCHANTER, LATERAL TO LINEA ASPERA
Vests intermedialis: ANTERIOR 2/3RDS SHAFT OF FEMUR
Vestus medalis: DISTAL INTERTROCHANTERIC LINE, MEDIAL TO LINEA ASPERA
Quadriceps origin
patella and tibial tuberosity
Quadriceps innervation
femoral nerve
Quadriceps action
HIP flexion
Knee extension
Sartorius O and I
Origin: ASIS
Innervation: medial to tibial tuberosity ( with the gracilis and semitendinosus - res anserinus )
Sartorius innervation
femoral nerve ( l2,3,4)
Sartorius action
Hip flexion, ABduction, ER
(FABER)
Knee flexion and internal rotation
(FIR)
Gracillus innervation
Obturator nerve L2-4
Gracillus Origin and insertion
origin: Inferior pubic ramus
Insertion
Medial : tibial tuberosity - with the satoris and semitendinosus 0 res anserinus “goose foot”
action of gracillus
adduction and hip flexion
knee flexion and internal rotation
Pectineus O and I
O: pecten pubis
I: pectineal line and proximal lines aspera
Pectineus innervation
Femoral
Pecineus action
hip adduction and external rotation (minor flexor)
Adductor longus inervation
obturator nerve L2-4
Adductor longus O and I
origin: superior pubic ramus
Insertion: linear aspect 1/3 of femur
adductor longus action
adduction
flexion to 70 degrees
adductor brevis innervation
obturator nerve L2-4
adductor brevis MOA
- adduction
- flexion to 70 degree
adductor brevis o and I
o: inferior pubic ramus
i: linea aspera - upper 1/3 of femur
adductor brevis action
hip adduction and flexion to 70 degree
Adductor magnus
DEEP PART: OBTURATOR NERVE: L2-L4
SUPERFICIAL PART: TIBIAL NERVE (L4)
adductor magnus I and O
i: inferior pubic ramus , ischial ramus and ischial tuberosity
O:
deep part: medial lip of lines aspera
Superficial part: adductor tubercle of femur
adductor magnus action
hip adduction
extension
TENDINOUS INSERTION ACTS AS INTERNAL ROTATOR.
obturator externus origin and insertion
O: outer surface of the obturator membrane
I: throchancteric fossa of the femur
obturator externes innervation
obturator nerve L3,4
obturator externes action
hip adduction
external rotation
obturator internus innervation
qdeep branch from L5 - S1
obturator internus O and I
O: inner surface of the obturator membrane
I: medial surface of greater trochanter
obturator internus ACTION
external rotation
adduction and extension of the hip
Gemelli O and I
O:
superior - ischial spine
inferior - ischial tuberosity
I
- medial surface of greater trochanter
Gemelli action
external rotation
adduction
extension of hip
Gemelli innervation
direct branches from L5, S1
Quadratus femoris innervation
direct branches from L5, S1
Quadratus femoris action
external rotation
adduction of the hip
Quadrates femoris O and I
O:
- lateral boarder of ischial tuberosity
i:
- intertrochanteric chest of femur
piriformis O and I
O: pelvis surface of sacrum
I: greater trochanter
piriformis innervation
direct branches from S1 and s2
priformis action
eternal rotation
adduction
extension of hip
semimembranosus O and I
O: ischial tuberosity
I: medial tibial condyle and oblique popliteal ligament
semimembranosus innervation
tibial nerve L5-S2
semimembranosus action
extension of hip
adduction of hip
flexion of knee
internal rotation of knee
semitendinosus O and I
O - ischial tuberosity and sacrotuberous ligament (common tendon with long head of biceps femurs)
I: medial tibial tuberosity in pes anserinus (w/ gracilis and sartorius )
semitendinosus action
hip: adduction and extension
knee: internal rotation and flexion
semitendinosus innervation
tibial nerve L5- S2
Biceps femoris O and I
o:
LONG HEAD – ISCHIAL TUBEROSITY, SACROTUBEROUS LIGAMENT (COMMON TENDON WITH SEMITENDINOSUS)
SHORT HEAD – LINEA ASPERA IN MIDDLE 1/3 OF FEMUR
Insertion:
head of fibula
Biceps femoris innervation
Long head: tibial nerve
Short head: common fibular nerve
Biceps femoris action
Hip: adduction , extension
knee: flexion , EXTERNAL rotation
Muscular Anatomy: Hip Flexors
RIPS AL
Rectus femoris (innervated by femoral nerve)
Iliopsoas (innervated by spinal nerves and femoral nerve)
Pectineus (innervated by femoral nerve)
Sartorius (innervated by femoral nerve)
Adductor longus
PLUS
Adducts brevis, adductor longus
Gracilis
TFL
Anterior part of GMedius and G minims
HIP EXTENSORS
BAGSS PO
Biceps femoris (long head is innervated by tibial nerve, and short head is innervated by common fibular)
Adductor magnus (innervated by tibial nerve and obturator nerve)
Gluteus maximus (innervated by inferior gluteal nerve)
Semitendinosus (innervated by tibial nerve)
Semimembranosus (innervated by tibial nerve)
Others:
Piriformis – Direct branches from L5-S2
Obturator Internus – Direct branches from L5, S1
ADDUCTORS of hip
GAMBL P
Gracilis (innervated by obturator nerve)
Adductor Magnus (innervated by obturator nerve and tibial nerve, because it has an adductor [obt n.] and a hamstring part [tib n.])
Adductor Brevis (innervated by obturator nerve)
Adductor Longus (innervated by obturator nerve)
Pectineus (innervated by obturator nerve)
Other:
Biceps Femoris (Long head) – Tibial Nerve – L5-S2
Quadratus Femoris – Direct branches from plexus – L5, S1
Obturator Internus – Direct branches from plexus – L5, S1
Obturator Externus – Obturator Nerve – L3, L4
ABDUCTION
Got Probed There Son
Gluteus medius and minimus (innervated by superior gluteal nerve)
Piriformis (innervated by lumbosacral plexus, i.e., branch that is too small to have a name)
Tensor fascia latae (innervated by superior gluteal nerve)
Sartorius - femoral nerve L2,3
Internal rotation
GIT
Gluteus Medius (Anterior Part) – Superior Gluteal Nerve – L4-S1
Gluteus Minimus (Anterior Part) – Superior Gluteal Nerve – L4-S1
Tensor Fascia Latae – Superior Gluteal Nerve – L4-S1
Adductor Magnus (Tendinus insertion) – Tibial Nerve – L4
Iliacus ( femoral nerve )
External rotation
Quacky Princess Sits Only On Silk
Gluteus Maximus – Inferior Gluteal Nerve – L5-S2
Obturator Internus – Direct branches from plexus – L5, S1
Quadratus Femoris – Direct branches from plexus – L5, S1
Obturator Externus – Obturator Nerve – L3, L4
Gluteus Medius/Minimus (posterior parts) – Superior Gluteal Nerve – L4-S1
Adductor Magnus – Obturator/Tibial Nerve – L2-L4
Adductor Longus – Obturator Nerve – L2-L4
Adductor Brevis – Obturator Nerve – L2-L4
Pectineus – Femoral/Obturator Nerve – L2, L3
Sartorius – Femoral Nerve – L2, L3
Iliopsoas – Direct branches from plexus – L1-L3
Name 9 bursae surrounding greater trochanter
Sub gluteus maximus, medius, minimus bursae
? Bursae to the Piriformis , Obturator Internus/Externus, Quadratus femoris, Superior and Inferior gemellis
Difficult to find resources for this question
Which tendons insert on the greater trochanter
Think of weals on a clock
12: Glut Medius
2: Glut Minimus
Glut Maximus
Vastus Lateralis
7: Quadrates Femoris
9: Conjoint tendon ( gemelli & obturator internus )
11: Piriformis
Connection to pes anserinus
refers to the conjoined tendons of three muscles that insert onto the anteromedial (front and inside) surface of the proximal extremity of the tibia)
SGT FOS (connections to pes anserinus)
Sartorius (Femoral nerve)
Gracilis (Obturator nerve)
SemiTendinosus (Sciatic nerve)
RISK FACTORS FOR FALL
Risk factors for falls include
Weakness
Balance disorders
Visual impairments
Dementia