MUSCLE ATTACHMENTS - PELVIS & THIGH

Question 1

Gluteus Maximus

Proximal and Distal
Action
Nerve

Answer 1

Proximal:
- Post gluteal surface + line of ilium
- Post iliac crest
- Post sacrum
- Sacrotuberous ligament
Distal:
- ITB
- gluteal tuberosity
Action:
- hip ext
- hip lat rot
Nerve:
- inf gluteal nerve (L4,L5, S1)

Question 2

Gluteus Medius + Minimus

Proximal and Distal
Action
Nerve

Answer 2

Proximal:
- Gluteal surface bw the post + ant gluteal lines
Distal:
- GT
Action:
- hip abd
- med rot
Nerve:
- sup gluteal nerve (L4, L5, (S1))

Question 3

Tensor Fascia Lata

Proximal and Distal
Action
Nerve

Answer 3

Proximal:
- A iliac crest + adj gluteal surface
- ASIS
Distal:
- L tib condyle via ITB (Gerdy’s tubercle)
Action:
- hip flex
- hip abd
- hip med rot
**Nerve: **
sup gluteal nerve (L4,L5)

Question 4

Piriformis

Proximal and Distal
Action
Nerve

Answer 4

Proximal:
- A aspect of 2nd->4th sacral segments
- Sacrotuberous ligmanent
Distal:
- M GT
Action:
- lat hip rot
Nerve:
- OBT (L5,S1,S2)

Question 5

Superior Gemellus

Proximal and Distal
Action
Nerve

Answer 5

Proximal:
- Gluteal surface of the ischial spine
Distal:
- M GT via obt int tendon
Action:
- lat rot
Nerve:
- OBT (L5,S1,S2)

Question 6

Obturator Internus

Proximal and Distal
Action
Nerve

Answer 6

Proximal:
- Int surface of the obturator membrane + adjacent bone
Distal:
- M GT
Action:
- lat rot
Nerve:
- OBT (L5,S1,S2)

Question 7

Inferior Gemellus

Proximal and Distal
Action
Nerve

Answer 7

Proximal:
- Upper ischial tuberosity
Distal:
- M GT via obt int tendon
Action:
- lat rot
Nerve:
- OBT (L4,L5,S1)

Question 8

Quadratus Femoris

Proximal and Distal
Action
Nerve

Answer 8

Proximal:
- Ischial tuberosity
Distal:
- quadrate tubercle
Action:
- lat rot
Nerve:
- OBT (L4,L5,S1)

Question 9

Obturator Externus

Proximal and Distal
Action
Nerve

Answer 9

Proximal:
- Outer surface of the obturator membrane + adjacent bone
Distal:
- trochanteric fossa
Action:
- lat rot
Nerve:
- OBT (L4,L5,S1)

Question 10

Gracilis

Proximal and Distal
Action - hip + knee
Nerve

Adductors

Answer 10

Proximal:
- A pubic body
- Inf pubic ramus
Distal:
- Upper, M tibia shaft
Action:
- hip add
- knee flex
Nerve:
- OBT (L2,L3)

Question 11

Pectineus

Proximal and Distal
Action - hip and knee
Nerve

Adductors

Answer 11

Proximal:
- Sup pubic ramus
Distal:
- pectineal line
Action:
- hip add
- knee flex
Nerve:
- OBT (L2,L3)

Question 12

Adductor Magnus

Proximal and Distal
Action - hip and hamstring part
Nerve

Adductors

Answer 12

Proximal:
- Ischiopubic ramus -> inf ischial tuberosity
Distal:
- distal 1/3 linea aspera
- adductor tubercle
Action:
- hip add
- hip ext (hamstring part)
Nerve:
- OBT + tibial (sciatic) L2,L3,L4

Question 13

Adductor Longus

Proximal and Distal
Action - hip
Nerve

Adductors

Answer 13

Proximal:
- A pubic body
Distal:
- middle 1/3 linea aspera
Action:
- hip add
Nerve:
- OBT nerve (L2,L3,L4)

Question 14

Adductor Brevis

Proximal and Distal
Action - hip
Nerve

Adductors

Answer 14

Proximal:
- Anterolat pubic body
- Inf pubic ramus
Distal:
- prox 1/3 linea aspera
Action:
- hip add
Nerve:
OBT (L2,L3,L4)

Question 15

Sartorius

Proximal and Distal
Action - hip and knee
Nerve

Anterior Compartment

Answer 15

Proximal:
- ASIS
Distal:
- MCL
- upper tibia shaft
Action:
- hip flex
- hip add
- knee flex
- knee med rot
Nerve:
- femoral (L2,L3)

Question 16

Rectus Femoris

Proximal and Distal
Action - hip and knee
Nerve

Quadriceps

Answer 16

Proximal:
- AIIS
Distal:
- tib tuberosity via PL
Action:
- hip flexion
- knee ext
Nerve:
- femoral (L2,L3,L4)

Question 17

Vastus Lateralis

Proximal and Distal
Action - knee
Nerve

Quadriceps

Answer 17

Proximal:
- Upper L intertrochanteric line
- Lower GT
- L gluteal tuberosity
- Upper L linea aspera
Distal:
- tib tuberosity via pat lig
Action:
- knee ext
Nerve:
- femoral (L2,L3,L4)

Question 18

Vastus Medialis

Proximal and Distal
Action - knee
Nerve

Quadriceps

Answer 18

Prox:
- Lower M intertrochanteric line
- M femoral shaft
- M linea aspera
- Upper M supracondylar line
Distal:
- tib tuberoisty via patella lig
Action:
- knee ext
Nerve:
- femoral (L2,L3,L4)

Question 19

Vastus Intermedius (beneath rec fem)

Proximal and Distal
Action - knee
Nerve

Quadriceps

Answer 19

Proximal:
- Prox A + L surfaces of femur
Distal:
- tib tub via patella lig
Action:
- knee ext
Nerve:
- femoral (L2,L3,L4)

Question 20

Bicep Femoris (thigh)

Proximal and Distal
Action - hip and knee
Nerve

Posterior Compartment (Hamstrings)

Answer 20

Proximal:
LH:
- M ischial tuberosity + ST lig
SH:
- Lower L linea aspera
- Upper L supracondylar line
Distal:
- fibula head
Action:
- LH: hip ext
- SH: knee flex
Nerve:
- LH: tibial (sciatic)
- SH: fibular (sciatic)
- L5, S1, S2

Question 21

Semitendinosus

Proximal and Distal
Action - hip and knee
Nerve

Posterior Compartment (Hamstrings)

Answer 21

Proximal:
- M ischial tuberosity
Distal:
- Upper M tibia
Action:
- hip ext
- knee flex
Nerve:
- tibial (sciatic) L5, S1, S2

Question 22

Semimembranosus

Proximal and Distal
Action - hip and knee
Nerve

Posterior Compartment (Hamstrings)

Answer 22

Proximal:
- L ischial tuberoisty
Distal:
- M tibial condyle
Action:
- hip ext
- knee flex
Nerve:
- tibial (sciatic) L5,S1,S2

Question 23

Psoas Major

Proximal and Distal
Action - hip
Nerve

Iliopsoas

Answer 23

Proximal:
- Transverse processes of L1 -> L5
Distal:
- LT
Action:
- hip flex
Nerve:
- lumbar (L2,L3)

Question 24

Iliacus

Proximal and Distal
Action - hip
Nerve

Iliopsoas

Answer 24

Proximal:
- iliac fossa
Distal:
- LT
Action:
- hip flexion
Nerve:
- lumbar (L1, L2, L3, L4)