Muscles of the pelvic girdle and thigh Flashcards
what are the abdominal Aorta branches? Medial to lateral
Abdominal aorta
Common iliac artery
External iliac artery
Femoral artery
Deep femoral artery
what is the femoral triangle?
Inverted triangle, a transition area from pelvis into thigh
what are the boundaries of the femoral triangle?
Superior base- inguinal ligament
Medial- adductor longus
Lateral- sartorius
what are the contents of the femoral triangle?
Femoral vein
Femoral artery
Femoral nerve
what is the main blood supply to the thigh muscle?
Deep femoral artery and vein
- It has perforating branches wrapping around the femur
when does the femoral artery become the popliteal artery?
once it passes through the adductor hiatus
where is the popliteal artery located?
the popliteal fossa
what are the boundaries of the popliteal fossa?
Semimembranosus
Semitendinosus
Biceps femoris
Gastrocnemius
what does the popliteal fossa contain?
Popliteal vein
Popliteal artery
Tibial nerve
Common fibular nerve
what are the three main peripheral nerves?
Sciatic (tibial and common fibular)
Femoral
Obturator
- gluteal nerves
where does the femoral nerve run?
The femoral nerve emerges between the psoas major and iliacus
Passes from the pelvis into the anterior thigh under the inguinal ligament
Runs through femoral triangle with the femoral artery and femoral vein
what does the femoral nerve innervate?
Muscles in the anterior thigh
Skin in anterior thigh and medial leg
what are the main functions of the anterior muscles?
Hip flexion and knee extension
What does damage to the femoral nerve cause?
femoral nerve injury leads to weakness/difficulty in hip flexion and/or knee extension
where does the obturator nerve run?
Exits the pelvis into the medial thigh through the obturator foramen
what does the obturator nerve innervate?
Innervates muscles in the medial compartments of the thigh
what is the main function of the medial thigh muscles?
The main function of these muscles is hip adduction
where does the sciatic nerve run?
Enter the posterior thigh through the greater sciatic foramen
what causes piriformis syndrome?
If sciatic nerve pierces through the piriformis muscle
what does the superior gluteal nerve innervate?
the hip abductors
what are the main function of the hip abductors?
To maintain a level pelvis during single leg stance
Hip abduction and internal rotation
what can superior gluteal nerve injury lead to?
dropping of contralateral pelvis
what does the inferior gluteal nerve innervate?
Gluteus maximus
what is the main function of the gluteus maximus?
hip extension
what does inferior gluteal nerve injury cause?
Not much impact on walking
Difficulty in getting up from a chair or climbing stairs
what are the muscle compartments of the thigh?
Anterior- for flexion
Posterior- for extension
Medial- for adduction
what are the hip flexors?
iliopsoas
what are the iliopsoas?
Iliacus
Psoas