OINA of compartments of the thigh (semester 2 year 1)

Question 1

Semitendonosis

Answer 1

Posterior compartment of the thigh

O- ischial tuberosity

I- Pes anserine

N- tibial branch of the sciatic nerve

A- Extends thigh, flexes leg, medially rotates knee when flexed, when thigh and leg are flexed, these muscles can extend the trunk

Question 2

Semimembranosis

Answer 2

Posterior compartment of the thigh

O- ischial tuberosity

I- Pes anserine

N- tibial branch of the sciatic nerve

A- Extends thigh, flexes leg, medially rotates knee when flexed, when thigh and leg are flexed, these muscles can extend the trunk

Question 3

Biceps femoris

Answer 3

Posterior compartment of the thigh

O- Long head- Ischial tuberosity

Short Head—linea aspera and lateral supracondylar line of the femur

I- lateral side of the head of the fibular

N- Long head (tibial branch of sciatic nerve) Short head (common fibular branch of the sciatic nerve)

A- Flexes leg, rotates it laterally when knee is flexed, extends thigh

Question 4

Adductor Longus

Answer 4

Medial compartment of the thigh

O-Body of pubis inferior to public crest

I-Middle Third of Linear Aspra of femur

N-Ant. branch of Obturator nerve (L2-L4)

A- Adducts Thigh

Question 5

Adductor brevis

Answer 5

Medial compartment of the thigh

O- Body and inferior ramus of pubis

I- Pectineal Line and proximal part of linea aspera of femur

N- Obturator Nerve (ant division) (L2-L4)

A- Adducts thigh, tiny amount of flexion

Question 6

Adductor magnus

Answer 6

Medial compartment of the thigh

O-Adductor-Inferior ramus of pubis, ramus of ischium.
-Hamstring- Ischial Tuberosity

I-Adductor-Gluteal Tuberosity, linea aspera, medial supracondylar line.

Hamstring-Adductor tubercle of femur.

N- Adductor part-Obturator Nerve (post. branches) (L2-L4)

Hamstring- Tibial branch sciatic nerve (L4)

A- Adductor- Adducts thigh and flexes thigh
Hamstring- Extends thigh

Question 7

Gracilis

Answer 7

Medial compartment of the thigh

O-Body and inferior Ramus of Pubis

I- Superior Part of Medial surface of the Tibia

N- Obturator Nerve(L2,L3)

A- Adducts Thigh; flexes leg; assists medial rotation of the leg

Question 8

Obturator externus

Answer 8

Medial compartment of the thigh

O- Margins of Obturator foramen and obturator membrane

I- Trochanteric Fossa of femur

N- Obturator Nerve (L3,L4)

A- Laterally rotates thigh; Steadies head of femur in acetabulum

Question 9

Pectineus

Answer 9

Anterior compartment of the thigh

O- Pectineal line of superior pubic ramus

I-Pectineal line of femyr

N- Femoral nerve

A- Adducts and flexes thihg, assists in medial rotation

Question 10

Quadratus femoris

Answer 10

Anterior compartment of the thigh

Made up of rectus femoris, vastus medialis, vastus lateralis and vastis intermedialis

… Get confirmation on this

Question 11

Psoas major

Answer 11

Anterior compartment of the thigh

O- Sides of T12-L5 vertebraeand IVD’s, TP’s lumbar vertebrae

I- Lesser trochanter

N- anterior rami of lumbar nerves

A-Flex thigh, stabelise hip, flex and sidebend trunk

Question 12

iliacus

Answer 12

Anterior compartment of the thigh

O- iliac crest and fossa, sacral ala

I- lesser trochanter of the femur

N- Femoral nerve

A- Flex thigh at hip, stabelises hip joint

Question 13

Sartorious

Answer 13

Anterior compartment of the thigh

O- ASIS, superior aspect of the greater sciatic notch

I- Superior medial tibia (pes anserine)

N- femoral nerve

A- Flexion, abduction, external rotation of the hip, slight flexion of the knee joint (linked with medial rotation at knee)