Hip Flashcards
Hip flexion muscles
Sartorius Psoas major Iliacus Pectineus Rectus femoris Gracilis
Hip extension muscles
Gluteus maximus Adductor magnes Biceps femoris Semimembranosius Semitendinosus
Hip abduction muscles
Gluteus mediums Gluteus minimus Piriformis Sartorius Tensor fasciae latae
Hip adduction muscles
Adductor longus Adductor brevis Adductor magnes Pectineus Gracilis
Hip medial rotation muscles
Gluteus medius
Gluteus minimus
TfL
Adductor magnus
Hip lateral rotation
Gluteus maximus Piriformis Obturator internal and external Gemellus superior and inferior Quadratus femoris Sartorius
What is the hip joint?
Synovial, polyaixal ball and socket joint
flexion and extension
abduction and adduction
medial and lateral rotation
Describe the acetabulum
Lunate surface of hyaline cartilage horseshoe shaped
thickest above and centrally for weight bearing
non articular region of actebular fossa and notch is covered with fat
Describe the head of the femur
spheroid in shape
covered in hyaline cartilage
thicker centrally than in the periphery
cartilage is deficiënt over the fossa
Limitation to range of motion
tension of antagonists
soft tissue apposition
tension of ligaments limit range
What is the sacro iliac joint?
synovial plane joint
nutation and counter nutation
What is the iliofemoral ligament
apex- AIIS
base- intertrochanteric line
limits extension and abduction
What is the pubofemoral ligament
from he pubic eminence to the capsule and the medial band of the iliofemoral ligament
limits extension and abduction
What is the ischiofemoral ligament?
from the inferior aspect of the ilium to the capsule and anterior part of the greater trochanter
limits extension and medial rotation
ligament teres
from a pit in the head of the femur
to the acetabular notch and transverse acetabular ligament
Inguinal ligament
Connects the ASIS to the pubic tubercle
Why is the hip joint stable?
congruent deep socket cup shaped acetabulum strong capsule vacuum effect of a ball within a socket arrangement of powerful surrounding muscles
What is the close packed position?
maximum extension
medial rotation and abduction
What is the open packed position?
Slight flexion
abduction and lateral rotation
Nutation
sacrum moves forward into the pelvis
Counter nutation
sacrum moves backwards
Interosseous sacro iliac ligament
from posterior aspect of the auricular surface on the ilium to posterior aspect of the auricular surface on the sacrum
