Hip Muscles
Which muscles originate on the Pubis?
Medial Group: Add. Longus, Brevis, Magnus
The Iliofemoral ligament limits which osteokinematic motion?
Pubofemoral?
Ischiofemoral?
Iliofemoral- Extension
Pubofemoral- Extension, Abduction
Ischiofemoral- Extension, Medial Rotation
What are the 4 knee muscles? How do you palpate them?
Rectus femoris, vastus lateralis, medius, intermedius
RF- down middle
VL- Ext, INV
VM- Ext, EVR
What is the Loose pack position of the tibiofemoral joint? Close- pack? Capsular pattern?
Loose- pack- 25 Flex
Close-pack- Full Ext, ER
Capsular Pattern- Flex>Ext
Which motion does the pelvis move during Nutation/Sacral Flexion? Which motion is occuring at the trunk and hip? Is it getting bigger or smaller?
Counternutation/Sacral Extension?
Base of Sacrum moves Anterior and Inferior
Trunk Flexion, Hip Extension
Pelvic OUTLET becomes larger
Which Muscles do Hip Extension?
Glute Max, (Hamstrings)- Semitendinosis, Semimembranosis, Bicep Femoris
What is the loose pack position of the Iliofemoral joint? Closed pack? Capsular pattern?
Loose pack- 30 Flex, 30 Abd, Slight LR
Closed pack- Full Ext, MR
Capsular Pattern- Flex>Abd>Int. rotation
Where do the knee muscles Insert? What action? Nerve?
Tibial tuberosity
Extension
Femoral
The Anterior Cruciate Ligament Prevents to much movement in which direction ? Of which bone? How? When does it tighten?
Prevents Anterior motion of tibia
Keeps femur from being displaced posteriorly
Tightens during extension, prevents hyperext
What is the loose-pack position of the SI joint? Close-pack? Capsular pattern?
Loose-pack- Counternutation/ unloading of joint/ neutral pelvis
Close-pack- Full nutation/ loading of joint/ push off during gait
Capsular pattern- None or pain when joint is stressed
Which muscles are innervated by the femoral nerve? Obturator?
Femoral- Iliopsoas, Satorius, Pectineus
Obturator- Add. group, Gracilis
What are the Arthrokinematics of CKC Hip Flexion, Abduction and External rotation?
Flex- Ant, Ant
Abd- Sup, Sup
ER- Post, Post
Concave on convex
Where does the vastus intermedialis originate?
Anterior femur
Stress to the MCL will cause which type of force? LCL?
Stress to the MCL will cause a Valgus force (knock-knees)
Stress to the LCL will cause a Varus force (bow-legs)
As the pelvis tilts in which direction does the lumbosacral angle increase? how many degrees? which pathology is associated with an increased lumbosacral angle?
Anterior pelvic tilt
30 degrees
Lordosis
Which muscles do Adduction? Abduction?
ADD- Gracilis, Pectineus, Add. group
ABD- Sartorius, Gluteus medius, Gluteus maximus, TFL
What are the motions of the hip?
What are the normal ROM measurements for the hip?
Flex- 120 (soft)
Ext-0 Hyper-20
Abd- 45
Add- 25
MR/LR- 45
Where does the rectus femoris originate?
AIIS
What are the signs of Miserable Malalignment? What age group does it affect?
Increased anteversion
Genu valgus
Increased tibial torsion
Pronated/Flat foot
Babys
Which plane of motion does Ant/Post tilt occur in? Rotation? If a pt has an unsupported side and supported side, which would be the point of reference?
Ant/Post- Sagittal plane
Rotation- Transverse plane
Unsupported side is POR
Which muscles insert onto the tibia?
Sartorius (prox. medial), Gracilis (Anteromedial), Semitendinosis (Anteromedial), Semimembranosis (post. med. condyle)
What is Coxa Valga? Coxa Vagus?
Vara- Smaller (<125) bowlegs (knees apart)
Valgus- Wider (>125) knock-knees (knees together)
Where does the vastus lateralis and medialis originate?
Linea aspera
What is active and passive insufficiency of the Quads and Hamstrings?
Knee Ext- AI (Quads) PI (Hamstrings)
Knee Flex- AI (Hamstrings) PI (Quads)
Which force couples are acting on pelvis during anterior tilt? posterior tilt?
Anterior tilt- Trunk extensors pull up (post), Hip flexors pull down (Ant)
Posterior tilt- Abdominals pull up (Ant), Glute max & hamstring pull down (post)