MUSCLES OF THE MEDIAL THIGH Flashcards
MUSCLES OF THE MEDIAL THIGH
- Gracilis 4. Adductor Brevis
- Pectineus 5. Adductor Magnus
- Adductor Longus
These muscles have a common action, what is it?**
adduction of the femur
MUSCLES OF THE MEDIAL THIGH
- Gracilis 4. Adductor Brevis
- Pectineus 5. Adductor Magnus
- Adductor Longus
These muscles have a common nerve supply, what is it?**
obturator nerve
named from the Latin word pecten, which means comb
it is a small muscle that is the most superior of the medial thigh muscles and found just medial to the
iliopsoas
Pectineus
Pectineus origin:
superior ramus (pubic pecten)/ramus
Pectineus insertion:
pectineal line/femur
Pectineus actions:
adducts the femur
flexion at the hip joint
Pectineus nerve supply:
femoral (L2,L3,L4) and obturator (L2,L3,L4)
a small muscle found deep to the pectineus and adductor longus
Adductor Brevis
Adductor Brevis origin:
inferior ramus/pubis
Adductor Brevis insertion:
pectineal line and linea aspera/femur
Adductor Brevis action:
adduction of the femur
Adductor Brevis nerve supply:
obturator (L2,L3,L4)
a muscle found just medial and slightly inferior to the pectineus
Adductor Longus
Adductor Longus origin:
inferior ramus/pubis
Adductor Longus insertion:
pectineal line and linea aspera/femur
Adductor Longus action:
adduction of the femur
Adductor Longus nerve supply:
obturator N. (L2.L3, L4)
a large composite muscle (part medial thigh and part posterior thigh)
this muscle is found deep to the adductor longus (anteriorly) and the hamstrings (posteriorly)
Adductor Magnus
The adductor magnus has a tendon of insertion that is a slit like opening which leads into the popliteal fossa (this opening is where the femoral vessels become the popliteal vessels) called:**
hiatus tendinous (adductor hiatus)
Adductor Magnus origin:
rami/ischium and pubis
Adductor Magnus insertion:
linea aspera and adductor tubercle/femur
Adductor Magnus action:
adducts the femur
extends the femur at the hip joint
Adductor Magnus nerve supply:
obturator (L2,L3,L4) and sciatic (L4-S3)
comes from the Latin word for slender
a long, narrow muscle which passes vertically downward on the medial aspect of the thigh and is
superficial throughout its course
it is the only muscle of the medial thigh which crosses both the hip and knee joint
Gracilis
Gracilis origin:
ramus/ischium and inferior ramus/pubis
Gracilis insertion:
superior medial shaft/tibia
Gracilis actions:
Flex the leg
adducts the femur
Gracilis nerve supply:
obturator (L2,L3, L4)
This muscle can be removed without noticeable loss of
action and surgeons often transplant this muscle or part of it (with nerve and blood vessels) to replace a
damaged muscle (i.e. hand muscles)**
Gracilis
a condition in which there is stretching of the origin of an adductor muscle beyond their tensile strength
usually occur in sports that require quick starts and patients will usually describe the following symptoms:
1. pain and tenderness in the groin area
2. stiffness in the area
3. weakness of the muscle(s)
4. possible bruising in the area
a strain of the iliopsoas
this may consists of micro tears of the fibers (grade I), partial tears (grade II) or complete tears (grade III)**
this is classified as a:
Pulled Groin(Adductor Strain)
