The SI Joint
Bones and Landmarks
Pelvic Girdle Motions
Pelvic Stabilizers
Pelvic Dysfunction
100
These two bones articulate to form the SI joint.
What is the sacrum and ilium?
100
Meaning "earlike" in latin, this bony landmark is located on the lateral surface of the sacrum and articulating with the ilium.
What is the auricular surface?
100
This pelvic movement occurs as the ASIS is moved anterior over the pubic symphysis.
What is anterior tilt of the pelvis?
100
This ligament, which limits rotation of L5 on S1 and prevents an anterior migration of L5 on S1, attaches on the transverse process of L5 and runs laterally to the iliac crest.
What is the iliolumbar ligament?
100
Tightness of these muscles contributes to a patient being unable to move out of an anterior pelvic tilt.
What is hip flexor (rectus femoris) and lower back extensor tightness?
200
The SI joint is characterized as this type of joint.
What is a synovial plane joint?
200
The sciatic nerve passes through this opening in the pelvic structure, which is formed by the sacrotuberous and sacrospinous ligaments.
What is the sciatic foramen?
200
Pelvic rotation occurs in this plane around this axis?
What is transverse plane around a vertical axis?
200
There is constant tension on the ligaments that connect the lumbar spine to the sacrum, because the sacrum is tilted forward _____ degrees.
What is 30?
200
A PTA, who suspects that the patients right pelvis is anteriorly rotated, will palpate the ASIS's and note this finding.
What is the right ASIS is lower than the left ASIS.
300
This term describes the movement of the base of the sacrum into a posterior and superior direction.
What is counter-nutation or sacral extension?
300
This landmark is located on the inferior portion of the ischium, serving as the origin site of attachment for the semitendinosus, semimembranosus, and long head of biceps femoris.
What is the ischial tuberosity?
300
A patient who sustained a broken leg and is in a cast from the hip to the foot will likely clear their foot from the ground to initiate swing phase by using this movement.
What is hip hiking?
300
The presence of these ligaments help to stabilize the pubic symphysis.
What is the superior and inferior pubic ligament?
300
How a PTA can tell the difference between a pelvic rotation and an upslip of the pelvis.
What is ASIS and PSIS both elevated in comparison to the opposite side in an upslip, where the ASIS will be low/high while the PSIS will be high/low?
400
Women are more susceptible to SI dysfunction due to this reason?
What is ligamentous laxity with menses or recovery from childbirth?
400
This landmark on the posterior side of the pelvis, which serves as an attachment site for the posterior sacroiliac ligaments, is used by physical therapists and assistants to determine if the pelvis is level or rotated.
What is the posterior superior iliac spine (PSIS)?
400
Right pelvic rotation creates these movements in the hip joints.
What is internal rotation in the right hip, external rotation in the left hip.
400
Pelvic stability is essential for the pelvis to effectively perform these functions it is designed for. (provide at least 1 function)
What is supporting the weight of the upper body, receiving ground reaction forces generated from the foot contacting the ground, serves as the origin for upper and lower body muscles.
400
A patient with a comminuted fracture (a fracture creating multiple fracture segments) to the superior and inferior pubic ramus will have this weightbearing status.
What is non-weight bearing or touch down weight bearing status?
500
This muscle, because of its origination on the anterior lateral portion of the sacrum, can be used to restore correct alignment of the SI joint.
What is the piriformis?
500
This term can be seen by drawing a line from the sacral promontory posteriorly to the superior border of the pubic symphysis anteriorly.
What is the pelvic inlet?
500
The effect of a right lateral pelvic tilt on the L5 vertebrae and on the hip joint.
What is left sidebending and right rotation in the vertebrae and abduction of the right hip, adduction in the left hip.
500
The reason why a patient is more likely to have lumbar dysfunction caused by pelvic dysfunction as compared to pelvic dysfunction caused by lumbar dysfunction.
What is the pelvis is more arthrokinematically stable and has greater ligamentous support?
500
This abnormal motion of the pelvis is seen in response to a weakened gluteus medius.
What is trendelenberg?
M
e
n
u