Week 4 Muscles of the hip and thigh regions. (insertion, origin and action) Flashcards
Gluteus maximus action
- major extensor of hip joint
- lateral rotator,
- abductor (upper fibres)
- tighten iliotibial band (inferior fibre)
- “straightening up from bending position”
Gluteus maximus origin
- Posterior gluteal line and roughened area posterior to it
- iliac crest
- posterior surfaces of sacrum and coccyx
- sacrotuberous ligament
- gluteal aponeurosis
Gluteus maximus insertion
- Iliotibial tract of fascia latae
* Gluteal tuberosity of femur
Gluteus medius action
Major abductor and lateral rotator (posterior fibers) of hip joint
Gluteus medius origin
- Gluteal surface of ilium between anterior and posterior gluteal lines
- Gluteal aponeurosis
Gluteus medius insertion
Lateral surface of greater trochanter of femur
Gluteus minimus action
Major abductor and medial rotator of hip joint
Gluteus minimus origin
Gluteal surface of ilium between anterior and inferior gluteal lines
Gluteus minimus insertion
Anterior surface of greater trochanter of femur
Piriformis actions
- Lateral rotator of extended hip joint
* Abductor of flexed hip joint
Piriformis origin
Anterior surface of sacrum between anterior sacral foramina
Piriformis insertion
Medial side of superior border of greater trochanter
Obturator internus, Superior & Inferior Gemelli actions
- Lateral rotator of hip joint
* Abductor of flexed hip joint
Obturator internus origin
- Pelvic surface of obturator membrane
- Margins of obturator foramen
- Pelvic surface of ilium
Obturator internus insertion
Medial surface of greater trochanter just superior to trochanteric fossa
Superior gemellus origin
External surface of ischial spine
Superior gemellus insertion
Medial surface of greater trochanter just superior to trochanteric fossa
Quadratus femoris action
- Lateral rotator and adductor of hip joint
* Stabilises position of head of femur in acetabulum
Quadratus femoris origin
Lateral surface of body of ischium anterior to tuberosity
Quadratus femoris insertion
Quadrate tubercle of femur and vertical region inferior to it
Obturator externus action
Lateral rotator of hip joint
Obturator externus origin
- External surface of obturator membrane
* External margins of obturator foramen
Obturator externus insertion
Trochanteric fossa of femur
Iliopsoas: Psoas major + Iliacus actions
Flexor and lateral rotator of hip joint
Iliopsoas: Psoas major + Iliacus insertion
Lesser trochanter of femur
Psoas Major origin
Bodies (T12-L5) and transverse processes of lumbar vertebrae and their intervertebral discs
Origin of Iliacus
Iliac fossa
Tensor fascia latae action
Stabilises the knee in extension
Tensor fascia latae origin
Iliac crest between ASIS and tubercle of crest
Tensor fascia latae insertion
Iliotibial tract of fascia latae
Sartorius actions
- Flexor and lateral rotator of hip joint
* Flexor of knee joint
Sartorius origin
Anterior superior iliac spine of hip bone
Sartorius insertion
Inferolateral to tibial tuberosity
Name Quadriceps femoris parts
- Rectus Femoris
- Vastus medialis
- Vastus lateralis
- Vastus intermedius
Quadriceps femoris insertion
Quadriceps tendon (and its Patellar ligament) to tibial tuberosity
Quadriceps femoris action
Extensor of knee joint
Rectus femoris action
- Flexor of hip joint
* Extensor of knee joint
Rectus femoris origin
- Straight head o Anterior inferior iliac spine
* Reflexed head o Superior to acetabular border
Vastus medialis origin
on Femur • Inferomedial part of intertrochanteric line • Spiral line • Medial lip of linea aspera • Medial supracondylar line
Vastus lateralis origin
on Femur • Lateral part of intertrochanteric line • Margin of greater trochanter • Lateral margin of gluteal tuberosity • Lateral lip of linea aspera
Vastus intermedius origin
Superior 2/3 of anterior and lateral surfaces of femur
Articularis genu action
Elevates fibrous capsule of knee joint during knee extension
Articularis genu origin
Anterior surface of inferior part of femoral shaft
Articularis genu insertion
Superior part of fibrous capsule of knee joint
Gracilis action
- Adductor of hip joint
* Flexor and medial rotator of knee joint
Gracilis origin
Inferior part of ischiopubic ramus
Gracilis insertion
Medial surface of proximal shaft of tibia
Adductor longus action
Adductor, flexor and medial rotator of hip joint
Adductor longus origin
External surface of body of pubis
Adductor longus insertion
Middle 1/3 of medial lip of linea aspera
Pectineus action
Adductor and flexor of hip joint
Pectineus origin
Superior surface of superior ramus of pubis
Pectineus insertion
Pectineal line of femur
Adductor brevis action
Adductor and flexor of hip joint
adductor brevis origin
External surface of middle of inferior pubic ramus
adductor brevis insertion
Insertion on Femur
• Pectineal line
• Proximal part of linea aspera
Adductor magnus parts and actions
• Adductor and medial rotator of hip joint • Adductor part – Flexor of hip joint • Extensor/ hamstring part – Extensor of hip joint
Adductor magnus origin
• Adductor part
– Ischiopubic ramus
• Hamstring part
– Inferolateral part of ischial tuberosity
Adductor magnus Insertion
Insertion on Femur • Adductor part – Medial margin of gluteal tuberosity – Proximal 1/3 of linea aspera • Hamstring part – Medial supracondylar line – Adductor tubercle
Biceps femoris action
• Both heads – Flexor of knee joint – Lateral rotator of flexed knee • Long head only – Extensor of hip joint
Biceps femoris origin of long head
Superomedial area of ischial tuberosity
Biceps femoris origin of short head
Lateral lip of linea aspera of femur
Biceps femoris Insertion
Apex of head of fibula
Semitendinosus action
- Extensor of hip joint
- Flexor of knee joint
- Medial rotator of flexed knee
Semitendinosus origin
Superomedial area of ischial tuberosity
Semitendinosus insertion
Medial surface of proximal tibial shaft
The pes anserinus (PA) is composed of the combination of tendinous insertions of which muscles
sartorius, gracilis, and semitendinosus muscles
Semimembranosus action
- Extensor of hip joint
- Flexor of knee joint
- Medial rotator of flexed knee
Semimembranosus origin
Superolateral area of ischial tuberosity
Semimembranosus insertion
Posteromedial aspect of medial tibial condyle