Wet Lab 3 - Ligaments Of The Pelvis Flashcards
What are ligaments?
They are collagenous ropes or ties that connect one bone to another across a joint. They tie one bone to another, binding them together.
What is the origin of the posterior (dorsal) interosseous sacroiliac ligament ?
Iliac tuberosity
What is the insertion of the posterior (dorsal) interosseous sacroiliac ligament ?
Posterior surface of the sacrum
What does the posterior (dorsal) interosseous sacroiliac ligament prevent?
- forward and downward dislocation of the sacrum from the ilia
- sacral nutation
What is sacral nutation ?
Rotation in the sagittal plane that moves the top forward and the coccyx backwards
What does the long posterior sacroiliac ligament prevent?
Extreme counternutation
What is the origin of the ilio-lumbar ligament ?
Iliac crest
What is the insertion of the ilio-lumbar ligament ?
Transverse process of the 5th lumbar vertebrae
What movements does the ilio-lumbar ligament prevent?
Forward dislocation (glide) of L5 on the downward-soloing upper surface of the sacrum
What is the origin of the sacrotuberous ligament?
The lateral sacrum
What is the insertion of the sacrotuberous ligament ?
Ischial tuberosity
What movement does the sacrotuberous ligament prevent?
Sacral nutation
What is the origin of the Inguinal ligament ?
Anterior Superior Iliac Spine
Where does the Inguinal ligament insert?
Pubic tubercle
Does the Inguinal ligaments prevent any movement ?
No - since it doesn’t cross any joints as it connects two pavers of the same bone (the hip bone), it cannot limit any joint movement
What does the Inguinal ligament serve as?
- serves as an attachment for abdominal wall muscles
- protect important structures that pass beneath it (such as the femoral vessels and nerve)
What is the origin of the anterior longitudinal ligament of the spinal column ?
It runs along the anterior surface of the vertebral column
Where does the anterior longitudinal ligament of the spinal column insert?
Each vertebra it passes
What movement does the anterior longitudinal ligament of the spinal column prevent?
It tightens in, therefore limiting spine extension
What is the origin of the superior interpubic ligament
Where does the superior interpubic ligament insert?
What movements does the superior interpubic ligament enable ?
It helps bind the left and right hip bones together at the front across the pubic symphysis
What is the origin of the inferior interpubic ligament (arcuate ligament =)
Where does the inferior interpubic ligament insert?
What movements does the inferior interpubic ligament enable ?
It helps bind the left and right hip bones together at the front across the pubic symphysis
What is the origin of the sacrococcygeal ligament ?
The inferior portion of the sacrum
Where does the sacrrococcygeal ligament insert?
The coccyx
What movements does the sacrococcygeal ligament prevent ?
Dislocation of the joint - as it strengthens the joint between the sacrum and the sacrum
What is the acetabular labrum ?
It is a fibrocartilaginous ring around the rim of the acetabulum
What does the acetabular labrum serve to do?
- it deepens the hip joint concavity
- it serves as part of the attachment of the hip joint capsule
What is the origin of the acetabular labrum ?
Where does the acetabular labrum insert ?
What does the transverse acetabular ligament do?
It converts the bony acetabular notch into a foramen by crossing where the acetabular labrum would be
What is the origin of the transverse acetabular ligament ?
Where does the transverse acetabular ligament insert?
What passes through this foramen ?
Nutrient vessels
What is the origin of the supraspinous ligament of the spinal column?
What does the supraspinous ligament of the spinal column run along?
The superficial midline of the posterior vertebral column
Where does the supraspinous ligament of the spinal column insert?
The tips of each spinous process as it passes
What movements does the supraspinous ligament of the spinal column prevent
Limits extreme flexion of the vertebral column
