Hip & Thigh Muscles
T/F: There is only one muscle in the lateral compartment of the thigh.
False. There is no lateral thigh compartment.
Which two muscles make up the iliopsoas? What is its action?
Performs hip flexion (primary), hip external rotation (secondary)
Name this joint.
Sacroiliac joint
Transcervical, intertrochanteric, and subtrochanteric
The pubic symphysis is made of what type of cartilage? What type of cartilage is present on either side of the pubic symphysis?
Fibrocartilage
Hyaline cartilage on either side
Which muscle resists contralateral hip drop as its primary action and is innervated by the superior gluteal nerve?
Gluteus medius
What muscles insert on the pes anserinus?
Sartorius, Gracilis, and semitendinosus
The pelvic girdle is made up of what bones?
2 hip bones (each is made of 3 bones: ilium + ischium + pubis), 1 sacrum (5 fused vertebrae), 1 coccyx (3-5 fused vertebrae)
Describe posterior pelvic tilt using bony landmarks.
ASIS moves inferiorly, PSIS moves superiorly
Name this ligament.
Sacrotuberous ligament
Perform an action that would stretch your rectus femoris. What type of pelvic tilt stretches the rectus femoris?
Hip extension & knee flexion w/ posterior pelvic tilt
Name this muscle. What is its action and innervation?
Vastus lateralis
Knee extension
Femoral nerve
What bone is this?
Pubis
Define piriformis syndrome. Perform a stretch that would help alleviate the symptoms of piriformis syndrome.
Compression of the sciatic nerve due to a tight piriformis muscle.
Pelvic rotation is resisted by what two ligaments?
Sacrotuberous ligament & sacrospinous ligament
Name this muscle. Where does it originate? What is it innervated by?
Pectineus
Superior ramus of pubis
Femoral and obturator nerves
Name this muscle. Provide its action and innervation.
Adductor longus
Hip adduction
Obturator nerve
Name this bony landmark.
Acetabulum
Genu varum means the Q angle is _______ than normal.
Name this ligament.
Iliofemoral ligament
This exercise is mainly strengthening what muscle?
Gluteus maximus
The long head of the biceps femoris originates from what bony landmark? What is the action and innvervation of the short head?
Long head originates from the ischial tuberosity.
Short head: knee flexion & external rotation, common fibular nerve
Which joint socket is deeper: the glenohumeral joint or the femoroacetabular joint?
Acetabulofemoral joint (less prone to dislocation as a result)
A smaller angle of inclination at the hip leads to _______ mobility. This image is also known as what clinical condition?
Greater mobility!
Coxa vara
Torsion angle