Unit 4 Pelvis Flashcards
Pelvis Joints
- Hip joint
- Sacroiliac
- Pubic symphysis
Sacroiliac Joint
- Bilateral
- Synovial joint
- Immobile
Pubis Symphysis
- Join left & right pelvic rami
- Cartilaginous joint
- Hyaline cartilage both ends
- Fibrocartilaginous disc between
- Immobile
Branches of Lumbosacral Plexus
- Femoral nerve
- Obturator nerve
- Sciatic nerve
- Tibial nerve
- Fibular nerve
Femoral Nerve
- Extensor of knee
- L2-L4
Obturator Nerve
- Adductors of hip
- Flexor
- L2-L4
Tibial Nerve
- Flexor of knee
- Plantar & intrinsic flexors (foot)
- L4-S3
Sciatic Nerve
- Tibial & fibular nerves
- L4-S3
Fibular Nerve
- Dorsiflexors
- Extensors
- Eversion
- L4-S2
Arterial Pathway
- Abdominal aorta
- Left & right iliac arteries
- Internal & external iliac arteries
- Femoral Artery
- Popliteal artery
- Anterior & posterior tibial arteries
Internal Iliac Artery
- Supplies musculature & viscera of pelvis
External Iliac Artery
- Lower limb supply
- Becomes femoral artery
Femoral Artery
- Branch deep thigh artery
- Through adductor canal
- Adductor hiatus hole
- Becomes popliteal artery
Deep Thigh Artery
- Supplies musculature next to femur
Popliteal Artery
- Posterior knee
Anterior Tibial Artery
- Through interosseous membrane
- Becomes dorsal petal artery
Dorsal Petal Artery
- Top of foot
Posterior Tibial Artery
- Along interosseous membrane
- Becomes medial plantar artery
Medial Plantar Artery
- Bottom of food
- Branches to fibular artery
Fibular Artery
- Supplies lateral aspect of limb
Vein Characteristics
- Floppy
- Muscles squeeze to push blood
- Contain valves to inhibit back flow
Deep Veins
- Return blood to heart during exercise
Superficial Veins
- Return blood to heart at rest
Deep Vein Pathway
- Posterior tibial veins/venules
- Popliteal vein
- Femoral vein
- External iliac vein
Superficial Vein Pathway
- Dorsal venous plexus
- Lesser saphenous vein
- Popliteal vein
- Great saphenous vein
Fascia Lata
- Facial sleeve
- Continuous with inguinal ligament & inferior abdominal wall
- Covers whole leg
- Encloses all thigh muscles
Deep Fascia
- Divides shank into 3 compartments
Femur Head
- Round, articular surface
- Join with pelvis
- Create hip joint
Fovea
- Indentation on femur head
- Ligament attachment
Femur Components
- Head
- Neck
- Greater trochanter
- Lesser trochanter
- Fovea
Pelvis
- Fusing of 3 bones (os coxae)
- At acetabulum
Os Coxae
- Ilium
- Ischium
- Pubis
Ilium
- Hip bones
Ischium
- Underneath glute muscles
- Sitting bone
Pubis
- Anterior aspect of genitalia
Acetabulum
- Form socket of hip joint
- 3 bones of os coxae
Posterior Pelvis Bones
- Join up with sacrum
- 3 bones of os coxae
Pelvic Fossae
- Gluteal fossa (posterior)
- Iliac fossa (anterior)
Obturactor Foramen
- Hole at right of inferior aspect of os coxae
Pubic Tubercle
- Bony prominence
- Anterior os coxae
- Joins halves of os coxae
Greater/Lesser Sciatic Notch
- Passage of nerves & vessels out of pelvis/glute region
Ligaments
- Sacrospinous
- Sacrotuberous
- Sacroliliac
- Greater sciatic foramen
- Lesser sciatic foramen
Sacrospinous Ligament
- Sacrum to ischial spine
Sacrotuberous Ligament
- Sacrum to ischial tuberosity
Sacroiliac Ligament
- Sacroiliac joint
- Anterior & posterior
Open Book Fracture
- At pubic symphysis
- Separation between pubic bones
Separation of Pubic Bones
- Normal 4-5mm
- Pregnancy 8-9mm
Open Book Fracture Causes
- Childbirth (diastasis symphysis pubis)
- Traumatic injury
Open Book Fracture Complications
- Infection
- Hemorrhage into pelvic cavity
