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Orthopedic Diagnosis > Lecture: Sacroiliac Joint > Flashcards

Lecture: Sacroiliac Joint Flashcards

1
Q

the SI joint is a point of __ bw the __ and the __ __ joints.
it is the __ understood joint and one of the most __ and interesting areas of the spine

A
  • intersection
  • spine
  • lower extremity
  • least
  • controversial
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2
Q

the __, __ & __ fuse at the acetabulum to form each innominate

A
  • ilium
  • ischium
  • pubic bone
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3
Q

the __ is a strong and triangular bone located bw the two __.

A
  • sacrum

- innominates

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4
Q

sacrum provides __ to this area and transmits the __ of the body from the mobile __ column to the __ region.

A
  • stability
  • weight
  • vertebral
  • pelvic
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5
Q

the iliac joint surfaces are formed from:

A

-fibrocartilage

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6
Q

the sacral surfaces are formed from:

A

-hyaline cartilage

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7
Q

hyaline cartilage is __X thicker than __.

A
  • 3-5

- fibrocartilage

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8
Q

SI joint is reinforced by __, some the of __ & __ of the body.

A
  • ligaments
  • strongest
  • toughest
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9
Q

the Anterior Sacral Ligament (ASL) is an __-__ thickening of the fibrous capsule.
relatively __ compared to the rest of the SI ligs, extends bw the __ & __ borders of the iliac auricular surface and the __ border of the __ auricular surface.

A
  • anterior-inferior
  • weak
  • anterior & inferior
  • anterior
  • sacral
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10
Q

interosseous ligament is a __ lig. located __ to the dorsal SI lig.

A
  • short

- deep

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11
Q

dorsal SI ligament (long) connects the __ with the lateral crest of the __+__.

A
  • PSIS

- S3 + S4

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12
Q

the sacrospinous lig.= __ large __ bands, broadly attached by its base to the __, lateral __ and partly blended with the __ SI lig., deep to the __ lig.

A
  • 3
  • fibrous
  • PIIS
  • sacrum
  • dorsal
  • sacrotuberous
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13
Q

sacrospinous lig. stabilizes against __ (forward __) of the __.
and counteracts against the dorsal and cranial migration of the sacral __ during __ __.

A
  • nutation
  • rotation
  • sacrum
  • apex
  • weight-bearing
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14
Q

sacrotuberous lig. extends from the __ tuberosity to the lateral margins of the __, __ & __.
lower borders of lig. are continuous with the __ __ tendon.
& counteracts against __ of the sacrum.

A
  • ischial
  • ilium, sacrum & coccyx
  • biceps femoris
  • nutation
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15
Q

the pubic symphysis is classified as a __, as it has NO __ tissue or __. and contains a __ disc.

A
  • symphysis
  • synovial
  • fluid
  • fibrocartilaginous
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16
Q

the bone surfaces of the pubic symphysis joint are covered in __ cartilage, but are kept apart by the presence of the __.

A
  • hyaline

- disc

17
Q

__ muscles attach directly to the sacrum and/or innominate.

these M.’s fxn primarily to __ the SI joint rather than to __ it.

A
  • 35
  • stabilize
  • move
18
Q

the __ muscle is innervated by S1-2.
it primarily fxns to produce external rotation & __ of the femur.
hip flexed @90deg. helps fxn as an abductor & __ __ of the hip.
capable of restricting __ joint motion.

A
  • piriformis
  • abduction
  • internal rotator
  • SI
19
Q

“pelvic floor muscles”: (3)
which muscle group?
they join the __ muscles to complete the pelvic floor.

A
  • pubococcygeus
  • puborectalis
  • iliococcygeus
  • levator ani
  • coccygeus
20
Q

the pelvic floor muscles work in a coordinated manner to ^increase:

A
  • intra-abdominal pressure
  • provide rectal support during defecation
  • inhibit bladder activity
  • help to support the pelvic organs
  • assist in lumbopelvic stability
21
Q

the anterior portion of the sacroiliac joint likely receives innervation from?

A

-the posterior rami of the L2-S2 roots

22
Q

the pelvic area must fxn to absorb the majority of the lower extremity __ which still permitting __ to occur.

A
  • rotation

- motion

23
Q

osteopathic model:

of pelvic complex biomechanics

A
  • sacrum rotates around 2 oblique axes

- the innominate are capable of rotating anteriorly and posterior

24
Q

chiropractic model:

of pelvic complex biomechanics

A
  • as one innominate flexes, the ipsilateral sacral base moves anterior and inferior
  • and as the other innominate extends, the sacral base on that side moves posterior and superior
25
Q

biomechanical model:

of pelvic complex biomechanics

A
  • when the sacrum nutates (<=moves ant.), relative to the innominate, a linear glide occurs b/w the 2 L-shaped articular surfaces of the sacroiliac joint
  • the shorter of the 2 lengths, level w/ S1, lies in a vertical plane
  • the longer length, spanning S2-4, lies in an A-P plane.
26
Q

Hx of SIJ dysfxn:
pt will have __ pain awakening them from sleep/__ in bed.
also pain with:
(+ with SLR)

A
  • sharp
  • turning
  • walking
  • ascending/descending stairs
  • standing from sitting position
  • hopping
  • or standing on the involved leg
27
Q

given the # of visceral organs in the vicinity of the SIJ, a thorough systems review is needed to __ __ a __ source for the symptoms.

A
  • rule out

- visceral

28
Q

SIJ stress tests:

A
  • Gaenslen’s/Lewin-G. (stressed into ext.)
  • Hibb (pain in buttock/pelvic=lesion)
  • Fabere/Laguerre
29
Q

acute phase goals:

A
  • regain soft tissue extensibility

- & neuromuscular control

30
Q

fxnal phase goals:

A

-restoration of gait, pelvic & lower quadrant strength & neuromuscular control

Orthopedic Diagnosis (20 decks)

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