The Hip & Socket...Gluteal Medius The front half helps to flex and internally rotate the hip. The...
Transcript of The Hip & Socket...Gluteal Medius The front half helps to flex and internally rotate the hip. The...
The Hip & Socket
Shapes of the Female Pelvis
Sacrotuberousligament
Sacrococcygealligament
Sacrospinous ligament
Sacrotuberousligament
Iliofemoral ligament
Pelvic Floor Muscles Support pelvic floor organs
Assist in urinary and fecal continence
Aid in sexual performance
Stabilize surrounding joints
http://commons.wikimedia.org/wiki/File:1115_Muscles_of_the_Pelvic_Floor.jpg
Layers of the Pelvic Floor
Perineal
Bulbocavernosus
Ischiocavernosus
Superficial transverse perineal
External anal sphincter
Urogenital diaphragm layer
Compressor urethera
Uretrovaginal sphincter
Deep transverse perineal
Pelvic diaphragm:
Levator ani: pubococcygeus (pubovaginalis,
puborectalis), iliococcygeus
Coccygeus/ischiococcygeus
Piriformis
Layers of the Pelvic Floor
Perineal
Bulbocavernosus
Ischiocavernosus
Superficial transverse perineal
External anal sphincter
Male Female
Levator ani
Piriformis
Coccygeus
Sacrum
Levator Ani
Puborectalis
Pubococcygeus
Iliococcygeus
Layers of the Pelvic Floor
Pelvic Diaphragm
What Muscles Determine The Position Of the Pelvis?
Quadriceps Hamstrings Psoas MajorQuadratus Lumborum
Tensor Fascia Latae
Rectus Abdominis Latissiums Dorsi Multifidus
AdductorsErector spinea
Quadratus Femoris
Gluteus maximus
Gluteus medius
Levator Ani
IliopsoasThe most important pelvicMuscle that doesn’t attach
to the pelvis
It’s alignment determines the relationship of the upper
and lower body
Iliotibial Band
ITB and TFL extend, abduct, & laterally rotate the hip
Stabilizes the knee in extension and a bit of flexion
TFL shortens the ITB at the knee
Half of the torque required to hold us up when pelvis is well aligned/
90% of the torque when misaligned
Iliotibial Band
The ITB is not muscle and doesn’t forgive bad posture the way muscle does
Misalignment of the femurs affects the ITB As the bones shift forward pulling the ITB backwards
Stabilizes the hip while walking
It’s evolution has been geared towards running
Acts as a spring to aid in locomotion
Tensor Fasciae Latae
External Rotation
Adduction
Stabilizes the pelvis on the leg
Origin on the ischial tuberosity
Insertion on greater trochanter
Quadrilateral muscle
Tensor of the Outer Fascia
Tensor fasciae latae
Adductor longus
SartoriousRectus femoris
Tensor fasciae latae
Pectineus
Quadriceps
Rectus Femoris
Flexes the thigh at the hip
Only quadriceps muscle to connect to the pelvis
Hip flexor along with psoas and sartorious.
Weak when knee is extended
Quadratus Femoris
Quadratus Femoris
CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=545378
External RotationAdduction
Origin on the ischial tuberosityInsertion on greater trochanter
Quadrilateral muscle
Gluteal Muscles
Gluteus Minimus Gluteus Medius Gluteus Maximus
Gluteus Maximus
Big bubble of a muscleBrought us up to stand w/ hamstringsExtends and externally rotates the leg
Connects into the IT BandTends to be overly engaged.
We are a tight assed people and we need to let go.
Gluteal MediusThe front half helps to flex and internally
rotate the hip.The back half helps to extend and
externally rotate the hip.Abducts the thigh
Together both halves abduct the hip and stabilize the pelvis.Back pain muscle
CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=545381
Gluteal Minimus
The front half helps to flex and internally rotate the hip.
The back half helps to extend and externally rotate the hip.
Abducts the thighTogether both halves abduct the
hip and stabilize the pelvis.
Hamstrings
biceps femorissemimembranosus semitendinosus
Hamstrings
Biceps FemorisTwo heads: One on tuberosity,
one on pelvis.
Attachment on tuberosity extends the knee
The second head attached to the pelvisInvolves the muscle in hip flexion.
Hamstrings
Semimembranosus
Extends the thigh at the hip
Medially rotates the leg if the knee is flexed
Hamstrings
Semitendinosus
Extends the thigh at the hip
Medially rotates the leg if the knee is flexed
Adductors
By Beth ohara - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=545389
5 adductors
Pull the leg towards the midline
Adductor magnus acts like a extensor and flexor as well as adductor
One of the holy trinity of muscle groups
Adductors
pectineus
adductormagnus
gracillis
adductorlongus
Adductorbrevis
psoas major
pectineus
adductorlongus
gracillis
rectusfemoris