Pelvis and Hip Flashcards
Angle within the frontal plane between the femoral neck and the medial side of the femoral shaft
ANGLE OF INCLINATION
Coxa Vara
Less than 125 degrees and cause Fracture
Coxa Valga
Greater than 125 degrees and cause Dislocation
FEMORAL TORSION
Innate medial twist of the femur, formed by the line bisecting the femoral head and neck, line connecting the 2 femoral condyles
Excessive Anteversion
May dislocate so it does in toe as compensation
Name the three bones that form the innominate bone
Ilium, pubis, and ischium.
What is the function of the obturator foramen?
Allows passage for nerves and blood vessels; covered by obturator membrane.
Which muscle attaches at the anterior superior iliac spine (ASIS)?
Sartorius.
attachment for the rectus abdominis on the pubis.
Pubic crest
limits hip extension and lateral rotation.
Iliofemoral ligament
articulate with the medial and lateral condyles of the femur.
Tibial condyles
serves as the proximal attachment for the hamstrings.
Ischial tuberosity
Patella glides inferiorly
during knee flexion.
Acetabulofemoral joint’s capsular pattern
limits hip flexion, internal rotation, and abduction.
Muscles of Hip ANTERIOR COMPARTMENT
Sartorius, Iliacus, Psoas, Pectineus, & Quadriceps Femoris
Muscles of Hip MEDIAL COMPARTMENT
Gracilis; Adductor longus/brevis/magnus; obturator externus
POSTERIOR COMPARTMENT hip mm
Biceps femoris, Semitendinosus, Semimembranosus, small part of adductor magnus
Iliofemoral Ligament limits
ER
Adduction
Hip Extension
Ischiofemoral ligament limits
Hip Extension
IR
Hip abduction
Pubofemoral ligament limits
Hip abduction
ER
Hip extension
Formed by the greater sciatic notch of the hip bone and the sacrotuberous ligament
Greater Sciatic Foramen
Formed by ischium, pubis, and inferior portion of the acetabulum
Obturator Foramen
Is formed by the lesser sciatic notch of the hip bone and the sacrotuberous and sacrospinous ligaments
Lesser sciatic Foramen
Defines the extent to which the acetabulum covers the front of the femoral head
Acetabular anteversion angle
Arthrokinematics of Hip flexion OKC
The convex femoral head spins posteriorly on the concave acetabulum
(Origin of Sartorius and Tensor Fasciae Latae)
Anterior Superior Iliac Spine
Origin of Hamstring Muscles
Ischial Tuberosity
Insertion of gluteus maximus and adductor magnus muscle
Gluteal tuberosity
Screw-home mechanism
during terminal knee extension, the tibia rotates externally on the femur.
Primary mm of Hip Flexors
Iliopsoas
Sartorius
Tensor Fasciae Latae
Rectus Femoris
Adductor Longus
Pectineus
Primary hip adductors
Pectineus
Adductor Longus
Gracilis
Adductor Brevis
Adductor Magnus
Primary hip extensors
G max
Hamstrings
Adductor Magnus (posterior head)
Primary abductors
Gluteus Medius
Gluteus minimus
Tensor Fasciae Latae