Hip & Thigh

Question 1

Tibia & Fibula

Answer 1

Tibia is medial

Fibula is lateral

Question 2

Carrying angle

Answer 2

Knee closer to midline: reduces resistance lever arm

Weight is mostly on medial side; medial condyle of femur is larger

Question 3

Answer 3

Question 4

Ligament btwn Tibia and Fibula?

Answer 4

Interosseous Ligament

(Site for muscle attachment)

Question 5

ACL tear

Answer 5

(Anterior cruciate ligament)

Results from twisting bones of knee in opposite directions

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Question 9

Patella

Answer 9

Intramembranous bone, forms in tendon, rides in patellar groove of femur.

Purpose: increase effort lever arm of quadriceps

Question 10

Mammalian limb rotation

Answer 10

• Evolutionary dorsal muscles are now anterior/lateral
• Evolutionary ventral muscles are now posterior/medial

Question 11

Answer 11

Tensor fascia latae

Att: iliac blade, IT band, lateral condyle of tibia

Inn: lumbosacral plexus

Action: hip abduction, flexion, medial rotation

Question 12

IT band syndrome

Answer 12

Common in runners, inflammation of IT band

Question 13

Answer 13

Gluteus maximus

Att: Iliac blade, sacrum, coccyx, IT band

Inn: lumbosacral plexus

Action: Hip extension, lateral rotation

Question 14

Answer 14

Gluteus medius & minimus

Att: iliac blade, greater trochanter of femur

Inn: lumosacral plexus

Action: hip abduction

Question 15

Pelvis evolution?

Answer 15

Apes: tall, coronally oriented iliac blades

Humans: short, sagitally oriented iliac blades

Gluteus medius and minimus shift from extensors (apes) to abductors (humans)

Question 16

Pelvic tilt stabilization (standing on 1 leg): which muscles?

Answer 16

Gluteus medius and minimus

Question 17

Answer 17

Sartorius

Att: Anterior superior iliac spine, tibia

Inn: femoral nerve

Action: hip abduction, flexion, lateral rotation, knee flexion

Question 18

Answer 18

Femoral nerve

Innervates sartorius, pectineus, and quadriceps group

Question 19

Answer 19

Question 20

Answer 20

Rectus femoris

Att: Anterior Ilium, tibial tuberosity

Inn: femoral nerve

Action: hip flexion, knee extension

Question 21

Answer 21

Question 22

Answer 22

Question 23

Answer 23

All adduct, flex, and medially rotate hip

All originate from pubis

• Gracilis
• Adductor magnus, longus, brevis
• Pectineus

Question 24

Answer 24

Obturator nerve

Innervates adductor group (except pectineus)

Question 25

Answer 25

Pectineus Att: pubis, shaft of femur Inn: femoral nerve Action: hip adduction, flexion, medial rotation

Question 26

Answer 26

Gracilis Inn: obturator nerve Att: pubis Action: hip adduction, flexion, medial rotation, knee flexion

Question 27

Answer 27

Question 28

Answer 28

Adductor magnus Att: pubis, ischial tuberosity, linea aspira Inn: obturator & tibial nerves Action: hip adduction, flexion, medial rotation, extension

Question 29

Answer 29

Question 30

Answer 30

Piriformis Att: sacrum, greater trochanter of femur (passes thru greater sciatic foramen) Inn: lumbosacral plexus Action: hip lateral rotation

Question 31

Answer 31

Obturator internis Att: internal surface of obturator foramen, greater trochanter (passes thru lesser sciatic foramen) Inn: lumbosacral plexus Action: hip lateral rotation

Question 32

Answer 32

Obturator externis Att: external surface of obturator foramen, greater trochanter Inn: lumbosacral plexus Action: hip lateral rotation

Question 33

Answer 33

Superior and inferior gemellus Att: Ischial spine (sup), Ischial tuberosity (inf), greater trochanter Inn: lumbosacral plexus Action: hip lateral rotation

Question 34

Answer 34

Quadratus femoris Att: ischial tuberosity, greater trochanter Inn: lumbosacral plexus Action: hip lateral rotation

Question 35

Answer 35

Sciatic nerve Innervates posterior thigh (hamstrings), shank, foot

Question 36

Answer 36

Question 37

Answer 37

Question 38

Answer 38

Semitendinosus Att: ischial tuberosity, tibia Inn: tibial nerve Action: hip extension, medial rotation, knee flexion

Question 39

Answer 39

Semimembranosus Att: ischial tuberosity, tibia Inn: tibial nerve Action: hip extension, medial rotation, knee flexion

Question 40

Answer 40

Question 41

Hip flexors?

Answer 41

Question 42

Hip extensors?

Answer 42

Question 43

Hip abductors?

Answer 43

Question 44

Hip adductors?

Answer 44

Question 45

Hip medial rotators?

Answer 45

Question 46

Hip lateral rotators?

Answer 46