Ch.8: Pelvic Girdle Flashcards
Each coxal (hip) consists of ______ bones
(#+ names)
3 bones:
- ilium
- ischium
- pubis
The two coxal bones are joined anteriorly by
The pubic symphysis
What type of cartilage is the pubic symphysis made up of
Fibrocartilage
The two coxal bones are joined posteriorly by
The sacrum forming the sacroiliac
Ilium
- the largest of the three hip bones
- forms the superior part of the hip bone
Iliac crest is also known as as the
Hip pointer
Greater sciatic notch houses the
Sciatic nerve
Gluteal lines of the ilium
Serve as the muscle attachments for the trunk, hip, and thigh
Ischium
Inferior and posterior part of the hip bone
What is the most prominate feature of the ischium
Ischial tuberosity
What is the ischial tuberosity
- most prominent feature of the ischium
- part that meets the chair when you are sitting
Pubis
Inferior and anterior part of the hip bone
Pelvic brim
- a line from the sacral promontory to the upper part of the pubic symphysis
False / greater pelvis location
- lies above the pelvis brim
False / greater pelvis contains
- contains no pelvic organs except the urinary bladder (when full), lower intestine in both sexes, ovaries and uterine tubes, and uterus during pregnancy
True/lesser pelvis location
- the boy pelvis inferior to the pelvic brim
- has a inlet, an outlet and a cavity
True/lesser pelvis contains
- Redfin, sex organs(vagina, cervix, and prostate)
Pelvic axis
A path of the baby during birth
Wider and shallower pelvis
Female
The sub pubic angle is greater than 100
Female
More space in the true pelvis
Female
Pubic bone is larger and heavier
Male
Pelvic inlet is smaller and heart shaped in
Males
The sub pubic angle is less than 90 in
Males
Wide and more oval pelvic brim is present in
Females
The acetabulum is small and faces anteriorly in
Females
The acetabulum is large and faces laterally in
Males
The obturator foramen is oval in
Females
The obturator foramen is found in
Males
The iliac crest is less curved in
Females
The iliac crest is more curved in
Males
The ilium is less vertical in
Females
The ilium is more vertical in
Males
The coccyx is more move able and curved anteriorly in
Females
The sacrum is shorter, wider, and less curved anteriorly in
Females
The coccyx is less move able and more curved anteriorly in
Males
The sacrum is larger, narrower and more curved anteriorly in
Males
The pelvic outlet is wider in
Females
The pelvic outlet is narrower in
Males
Anteriorly group function
Hip flexor
Iliacus
Flexes and rostered the thigh laterally
O: iliac fossa of ilium
I: lesser trochanter of the femur
Psoas major
Flexes and rotates the thigh laterally
O: transverse process and body of the lumbar vertebrae
I: lesser trochanter
Sartorius
Longest flexor and rotator muscle of the thigh. Flexes, abducts and rotates the leg medially
O: anterior superior iliac spine
I: medial surface of body of tibia
Recuts femoris
Extends and flexes thigh at the hip joint
O: anterior inferior iliac spine
I: tibial tuberosity
Lateral group contains what muscle
Tensor fasciae latae
Tensor fasciae latae
Flexes and abducts thigh medially at the hip joint
O: iliac crest/ spine
I: tibia by the way of the iliotibial tract
Lumbar plexus forms nerves
- femoral nerve
- obturator nerve
Lumbar plexus forms
The medial and lateral plantar nerves
Cutaneous innervation of lumbar plexus
- to the calf of the leg, and plantar surface of the foot
Lumbar plexus motor innervation
- to the posterior thigh and leg muscles and the instrinsic muscles of the foot
Two branches of the lumbar plexus
- femoral nerve
- obturator nerve
Femoral nerve
Posterior division of the lumbar plexus
- thigh and foot
Obturator nerve
Anterior division of the lumbar plexus
- only foot
Motor innervation of the femoral nerve
Anterior thigh muscles
quadriceps femoris (knee extension)
- recuts femoris
- vastus lateralis
-vastus intermedius
- vastus medialis
iliopsoas (hip flexor)
sartorius (hip and knee flexor)
Pectineus
Cutaneous innervation of the femoral nerve
Anterior thigh
Inferomedial thigh
medial side of the leg
Most medial aspect of the foot
Obturator nerve
Medial thigh muscles (adductors of the thigh)
- adductors
- gracilis
- pectineus
Obturator externals (lateral rotation of thigh)
Superomedial thigh
