Thigh Flashcards
Inguinal ligament attachments
Anterior superior iliac spine to pubic tubercle
Saphenous opening
Area of weakness in the fascia lata
Saphenous vein passes through to meet the femoral vein
Two muscles that the fascia lata doesn’t cover
Gluteus maximus and tensor of fascia lata
Iliotibial band
Blending of tendon of ToFL and FL
Inserts into lateral superior aspect of tibia
Lateral intermuscular septa
Divides anterior and posterior compartments of thigh
6 muscles in the anterior thigh
Pectineus Iliacus Psoas major Tensor fascia lata Sartorius Quadriceps femoris
4 muscles that make up the quadriceps femoris
Rectus femoris
Vastus lateralis
Vastus intermedius
Vastus medialis
Pectineus origin
Superior pubic ramus
Pectineus insertion
Inferior to lesser trochanter
Pectineus innervation
Femoral nerve and obturator nerve
Pectineus actions
Adducts and flexes thigh
Iliacus origin
Iliac fossa
Iliacus insertion
Lesser trochanter
Iliacus innervation
Femoral nerve
Iliacus actions
Flexes and externally rotates thigh
Psoas major origin
Lumbar vertebrae
Psoas major insertion
Lesser trochanter
Psoas major innervation
L2 and L3
Psoas major actions
Flexes and externally rotates thigh
Tensor fascia lata origin
ASIS and iliac crest
Tensor fascia lata insertion
Iliotibial band
Tensor fascia lata innervation
Superior gluteal nerve
Tensor fascia lata actions
Abducts thigh
Dynamic stabiliser
Sartorius origin
ASIS
Sartorial insertion
Pes anserinus
3 muscle tendons that make up the pes anserinus
Sartorius
Gracilis
Semitendonosus
Rectus femoris straight head origin
AIIS
Rectus femoris reflected head origin
Superior acetabular rim
Rectus femoris innervation
Femoral nerve
Rectus femoris actions
Flexes thigh
Extends leg
Sartorius innervation
Femoral nerve
Sartorius actions
Flexes, abducts and externally rotates thigh
Flexes leg
Vastus lateralis origin
Greater trochanter and linea aspera
Linea aspera
Ridge of roughened surface on the posterior surface of the shaft of the femur
Vastus intermedius origin
Superior 2/3 of femoral shaft and lateral intermuscular septum
Vastus medialis origin
Intertrochanteric line and medial intermuscular septum
Vasti insertion
Superior patella
Vasti actions
Extend leg
Vasti innervation
Femoral nerve
5 muscles in the medial thigh
Adductor longus Adductor brevis Adductor magnus Gracilis Obturator externus
Adductor longus origin
Body of pubis
Adductor longus insertion
Linea aspera
Adductor longus innervation
Obturator nerve
Adductor longus actions
Adducts and flexes thigh
Adductor brevis origin
Inferior pubic ramus
Adductor brevis insertion
Linea aspera
Adductor brevis innervation
Obturator nerve
Adductor brevis actions
Adducts and flexes thigh
Adductor magnus adductor part origin
Inferior pubic ramus
Adductor magnus hamstring part origin
Ischial tuberosity
Adductor magnus insertion
Linea aspera, medial supracondylar ridge and adductor tubercle
Adductor magnus adductor part innervation
Obturator nerve
Adductor magnus hamstring part innervation
Sciatic nerve
Adductor magnus actions
Adducts thigh
Flexes and extends thigh
Gracilis origin
Body of pubis
Gracilis insertion
Pes anserinus
Pes anserinus insertion
Superior part of medial tibia
Gracilis innervation
Obturator nerve
Gracilis actions
Adducts thigh
Flexes and internally rotates leg
Obturator externus origin
Obturator foramen and membrane
Obturator externus insertion
Posterior intertrochanteric fossa
Obturator externus innervation
Obturator nerve
Obturator externus actions
Externally rotates thigh
The adductor hiatus is formed by:
The adductor magnus and the femur
The femoral and obturator nerves arise from:
The lumbar plexus - L2, L3 and L4
The terminal branch of the femoral nerve is called:
The saphenous nerve
Arterial branches in the thigh, starting with aorta and finishing with perforator arteries
Aorta Right common iliac artery External iliac artery Femoral artery Profunda femoris Perforator arteries
Vein branches in the thigh starting with inferior vena cava and finishing with superficial veins
IVC
Right common iliac vein
External iliac vein
Small saphenous and great saphenous veins - superficial, form a loop back up
Femoral triangle boundaries
Superior: inguinal ligament
Lateral: sartorius
Medial: adductor longus
Contents of femoral triangle
Nerve
Artery
Vein
Lymphatics
Femoral triangle roof
Fascia lata, fat and skin
Femoral triangle floor
Iliacus
Psoas major
Pectineus
Adductor brevis
Femoral nerve formation
From L2, L3 and L4 within psoas major
Passes under midpoint of inguinal ligament to supply flexors of hip and extensors of knee
Femoral sheath
Starts at inguinal ligament
Extends inferiorly
Contains artery, vein and lymphatics but not nerve
Adductor canal boundaries
Medial: sartorius
Posterior: adductors longus and magnus
Lateral: vastus medialis
Inlet to adductor canal
Apex of femoral triangle
Outlet of adductor canal
Adductor hiatus
Contents of adductor canal
Femoral artery
Femoral vein
Nerve to vastus medialis
Saphenous nerve
3 key ligaments in the pelvis
Sacrotuberous
Posterior sacroiliac
Sacrospinous
Sacrospinous ligament
Connects sacrum and coccyx to ASIS
Sacrotuberous ligament
Connects sacrum and coccyx to ischial tuberosity
Greater sciatic foramen purpose
Exit route for everything in pelvis to go to gluteal region
Lesser sciatic foramen purpose
Passageway for structures entering and leaving the perineum
8 gluteal muscles
Gluteus maximus Gluteus medius Gluteus minimus Piriformis Obturator internus Superior and inferior gemelli Quadratus femoris Tensor fascia lata
Gluteus maximus origin
Upper ilium, posterior sacrum, coccyx and sacrotuberous ligament
Gluteus maximus insertion
Iliotibial band and gluteal tuberosity of the femur
Gluteus maximus innervation
Inferior gluteal nerve
Gluteus maximum actions
Extends and laterally rotates thigh
Gluteus medius origin
Ilium between posterior and middle gluteal lines
Gluteal medius innervation
Superior gluteal nerve
Gluteus medial actions
Abducts and internally rotates thigh
Pelvis stabiliser
5 muscles that insert into greater trochanter
Gluteus medius Gluteus minimus Piriformis Obturator internus Superior and inferior gemelli
3 muscles innervated by superior gluteal nerve
Gluteus medius
Gluteus minimus
Tensor fascia lata
Superior gluteal nerve arises from:
L4, L5 and S1
Gluteus minimus origin
Ilium between middle and inferior gluteal lines
Gluteus minimus innervation
Superior gluteal nerve
Gluteus minimus actions
Abducts and internally rotates thigh
Piriformis origin
Anterior sacrum and sacrotuberous ligament
Piriformis innervation
Sacral plexus (S1 - S2)
4 muscles that externally rotate the thigh
Piriformis
Obturator internus
Superior and inferior gemelli
Quadratus femoris
Obturator internus origin
Obturator foramen and membrane
Obturator internus innervation
Nerve to obturator internus from the sacral plexus
Superior gemelli origin
Ischial spine
Superior gemelli innervation
Nerve to obturator internus
Inferior gemelli origin
Ischial tuberosity
Inferior gemelli innervation
Nerve to quadratus femoris
Quadratus femoris origin
Ischial tuberosity
Quadratus femoris insertion
Quadrate tubercle
Quadratus femoris innervation
Nerve to quadratus femoris from the sacral plexus
Inferior gluteal nerve arises from:
L5, S1 and S2
4 posterior thigh muscles
Biceps femoris
Semitendonosus
Semimembranosus
Adductor magnus
All posterior thigh muscles are innervated by the ______ _____ _____ except the ______ ______ ____ ____ which is innervated by the _____ _______ _____
Sciatic tibial nerve
Biceps femoris short head
Sciatic peroneal nerve
Biceps femoris long head origin
Ischial tuberosity
Biceps femoris short head origin
Linea aspera
Biceps femoris insertion
Head of fibula
Biceps femoris actions
Flexes and externally rotates leg at knee
Extends thigh at hip
Semitendonosus origin
Ischial tuberosity
Semitendonosus insertion
Pes anserinus
Semitendonosus actions
Flexes and internally rotates leg
Extends thigh
Semimembranosus origin
Ischial tuberosity
Semimembranosus insertion
Medial condyle of tibia
Semimembranosus actions
Flexes and internally rotates leg
Extends thigh