Pelvis Flashcards
Drop table adjusting comes from which two different schools of thought?
- Neurological stimulation
- Motion restoration
What is the history of drop table adjusting relevant to 1952?
BJ Palmer used drop headpiece for HIO technique
What is the history of drop table adjusting relevant to 1957?
Clay Thompson used drop pieces for C, T, L, and pelvis
How is the drop table used for neurological stimulation?
Light tension, multiple drops (3-4), sometimes done with a recoil thrust, focusing on proprioceptive stimulation
How is the drop table used for motion restoration?
Heavier tension, typically one thrust without recoil
What are five reasons a leg length appears different in a patient?
- Dysfunction/subluxation in the spine/pelvis
- Neurological feedback to motor control
- Muscular dysfunction/changes in muscle tone
- Alteration of the innominate affects acetabulum position
- Position of acetabulum gives appearance of discrepancy
Pron short leg may indicate ___ on that side
PI ilium
Prone long leg may indicate ___ on that side
AS ilium
With AS ilium, what is the possible leg length finding when patient is prone?
Long leg
With PI ilium, what is the possible leg length finding when patient is prone?
Short leg
With AS ilium, what restriction may be found?
SI flexion restriction
With PI ilium, what restriction may be found?
SI extension restriction
What is the reference point for static listings such as EX or IN?
PSIS
External rotation of the SI joint occurs with ___ movement of ___
medial to lateral movement of the PSIS
Internal rotation of the SI joint occurs with ___ movement of ___
lateral to medial movement of the PSIS
External rotation of the SI joint creates gapping of…
posterior aspect of SI joint
Internal rotation of the SI joint creates gapping of…
anterior aspect of the SI joint
With external rotation restriction of the SI joint, what malposition may be found?
IN ilium
With internal rotation restriction of the SI joint, what malposition may be found?
EX ilum
How might IN ilium present in the feet?
Increased foot flare (toe out) with pronation on IN side
How might EX ilium present in the feet?
Toe in with supination on EX side
With IN ilium, where might PSIS be found?
Closer to the midline compared to other PSIS
With EX ilium, where might PSIS be found?
Misaligned laterally compared to other PSIS
During seated motion palpation for internal and external rotation of the SI, what is the doctor’s contact?
What directions are given to the patient?
Doctor palpates for PSIS
Patient slowly separates knees, PSIS should move internally for internal rotation
Patient slowly brings knees together, PSIS should move laterally for external rotation
What happens to the lumbosacral facet joints during gait?
Unilaterally flex and extend alternating side to side
For the lumbosacral facet joints to move during gait, what must occur to the sacrum?
Sacrum moves around 2 oblique axes
What is the reference point for static listing of the sacrum?
Sacral promontory (anterior base)
The side of heel strike during gait is the side of…
loading
Which way will the sacrum move during heel strike?
Sacrum laterally flexes to side of heel strike
How is the sacrum affected by longer strides during gait?
Greater asymmetry is created
With increased asymmetry of gait, what is required of the sacrum?
Greater movement of the sacrum on the oblique axis
What happens to the ilium in response to sacrum’s movement during gait?
Reciprocal movement on the side of loading
The oblique axes of the sacrum are named for…
side of S1 they would be passing through
Rotation restriction around the right oblique axis can also be listed as…
- Left L/S extension restriction
- PS sacral base on the left
- Left L/S flexion malposition
How can you induce rotation around the right oblique axis?
Hypothenar contact to sacral base on the left
P to A preload and thrust
Counter rotation restriction around the right oblique axis can also be listed as…
- Left L/S flexion restriction
- AI sacral base on the left
- Left L/S extension malposition
How can you induce counter rotation around the right oblique axis?
Thenar contact to sacral apex on the right
PALMSI with radial torque preload and thrust
Where would you contact to adjust bilateral LS extension restriction/sacral nutation?
Sacral base
Where would you contact to adjust LS flexion restriction/sacral counternutation?
Sacral apex
To induce rotation around an oblique axis, where would you contact?
Sacral base opposite of axis
To induce counter rotation around an oblique axis, where would you contact?
Sacral apex same side as axis
