SI Joint Flashcards
Compression of sacrum during weight bearing creates what
Keystone locking (greater force, greater resistance)
Anterior tilt is associated with
Counternutation/torsion, increased lordosis, tight psoas and erector spinae, underactive gluteus Maximus, overactive hip flexors, and weak core
Posterior pelvic tilt is associated with
Nutation/torsion, decreased lordosis, tight gluteus Maximus and hamstrings, underactive psoas, overactive hamstrings, and weak core
In-flare
PSIS lateral, ASIS medial, weak glute medius/minimus
Out-flare
PSIS medial, ASIS lateral, tight glute medius/minimus
Location of pain for SI
Over buttocks, may radiate down posterior thigh into groin or down anterior thigh, unilateral pain is more common
Intra-articulate causes for SI pain
Arthritis and infection
Extra-articular causes of SI pain
Ligamentous injury, fx, myofascial pain
MOI for pelvic ring fx
High energy blunt trauma, MVA, falls
Anterior-posterior compression SI loading vectors caused by
Head-on MVA
Lateral compression SI loading vector cause
Side impact MVA
Vertical shear SI loading vector caused by
Fall from a height
What is an inflammatory rheumatic diseases characterized by spine and SI joint involvement that manifests as spondylitis and sacroilitis
Ankylosing spondylitis
Other s/sx of ankylosing spondylitis
SI joint pain pattern, severe on rest but improving with activity, iridocyclitis, onycholysis, generalized fatigue
Dagger sign is seen with which condition
Ankylosing spondylitis`
What condition is a bone remodeling disorder that begins with excessive bone resorption followed by an increase in bone formation
Paget’s disease
Up-Slip MET
Laying on table supine pulling leg into hip IR, slight abd, slight flex and pull traction hold and then exhale and thrust
Posterior pelvic tilt MET
Pt side lying or supine, leg abducted and ext off side of table and resist hip flexion
Anterior pelvic tilt MET
Pt prone or supine leg abducted and flexed, stabilize opp hip and resist hip ext
Out-flare MET
Supine or hook lying,, pt adduct or ER/abd
In-flare MET
Pt. Supine or hook-lying, knees flexed have potion abd or IR/ADD
