quiz #4 - hip & pelvis Flashcards
hip & pelvis joints
pubic symphysis joint (pubic)
acetabulofemoral joint (hip)
sacroiliac joint
sacrococcygeal joint
pubic symphysis (pubic) joint - type & movements
cartilaginous, symphysis, amphiarthrosis, uniaxial
gliding, very little motion
pubic symphysis (pubic) joint - articular surfaces
symphyseal surfaces covered by hyaline of two pubic bones with a fibrocartilaginous disc in between
pubic symphysis (pubic) joint - ligaments
-superior & inferior (arcuate) pubic ligaments
-fibrocartilaginous disc
pubic symphysis (pubic) joint - movements
very small (2mm), increases during pregnancy
-superior & inferior glide
-seperation, distraction, compression
pubic symphysis (pubic) joint - capsular pattern of restriction (loose/ close packed)
capsular pattern = pain when joint is stressed
*no loose or close packed position
acetablofemoral (hip) joint - type & movements
synovial, ball & socket, diarthrosis, triaxial
flex, ext, ADD, ABD, medial/ internal rotation, lateral/ external rotation, circumduction
acetablofemoral (hip) joint - articular surfaces
convex head of femur with concave lunate surface of acetabulum on labrum
acetablofemoral (hip) joint - ligaments
-fibrous capsule
-labrum
-zona orbicularis
-ligamentum capitis femoris (ligamentum teres)
-transverse acetabular
-iliofemoral (Y ligament of Bigelow)
-pubofemoral
-ischiofemoral
BURSA (3)
trochanteric
ischial
gluteofemoral
flexion (hip arthrokinematics)
pivots, femur rolls superior & glides inferior on acetabulum
extension (hip arthrokinematics)
pivots, femur rolls inferior & glides superior on acetabulum
ABDuction (hip arthrokinematics)
femur rolls lateral & superior & glides inferior on acetabulum
ADDuction (hip arthrokinematics)
femur rolls medial & inferior & glides superior on acetabulum
internal rotation (hip arthrokinematics)
femur rolls medial & glides lateral on acetabulum
external rotation (hip arthrokinematics)
femur rolls lateral & glides medial on acetabulum
hip joint forces
Standing: 0.3x your body weight
Standing on 1 leg: 2.5x your body weight
Walking: 3x your body weight
Running: 4.5x your body weight
acetabulofemoral (hip) joint - loose packed position
30º flexion
30º ABD
slight lateral rotation
acetabulofemoral (hip) joint - close packed position
full extension, medial rotation, ABDuction
acetabulofemoral (hip) joint - capsular pattern of restriction
flexion
ABDuction
medial rotation
acetabulofemoral (hip) joint - normal end feels
-flexion & ADD: elastic/ tissue approximation
-straight leg raise: elastic
-extension and abduction: elastic/firm
-internal & external rotation: elastic/firm
acetabulofemoral (hip) joint - abnormal end feels
bony: osteoarthritis
late myospasm: instability
femoral head in hip joint (flexion & extension)
flexion: roll = ANTERIOR, slide = POSTERIOR
extension: roll = POSTERIOR, slide = ANTERIOR
sacroiliac joints - type & movements
synovial, plane (also fibrous, syndesmosis), diarthrosis, amphiarthrosis
gliding (slight), nutation & counternutation
sacroiliac joints - articular surfaces
C-shaped auricular surface, concave sacral surface (covered in hyaline cartilage) on sacrum
C-shaped auricular surface, convex ilium surface (covered in fibrocartilage) on ilium
sacroiliac joints - ligaments
-joint capsule
-iliolumbar
-anterior sacroiliac
-interosseous sacroiliac
-posterior; long & short sacroiliac
-sacrotuberous
-sacrospinous
anterior pelvis ligaments
-iliolumbar
-anterior longitudinal
-anterior sacroiliac
-inguinal
-obturator membrane
-iliofemoral (capsule)
-pubic
posterior pelvis ligaments
-posterior sacroiliac
-interosseous sacroiliac
-sacrotuberous
-sacrospinous
nutation (sacroiliac)
-base of sacrum moves inferiorly & anteriorly
-enlarges pelvic outlet
-ischial tuberosities move apart
-symphysis pubis approximates
-iliac crests approximate
-PSIS separates
-ASIS flares in
counter nutation (sacroiliac)
-base of sacrum moves superiorly & posteriorly
-enlarges pelvic inlet
-ischial tuberosities approximate
-pubic symphysis separates
-iliac crests separate
-PSIS approximates
-ASIS flares out
sacroiliac joints - loose & close packed position
LOOSE: neutral
CLOSED: full nutation
sacroiliac joints - capsular pattern of restriction
pain with stressing joint
sacrococcygeal joint - type & movements
cartilaginous, symphysis, amphiarthrosis, uniaxial
very small amount of flexion & extension; especially during childbirth & defecation, fuses with age
sacrococcygeal joint - articular surfaces
inferior surface of apex of sacrum
superior surface of base of coccyx
sacrococcygeal joint - ligaments
-has fibrocartilaginous disc
-sacrococcygeal ligaments (anterior, lateral, superficial posterior, deep posterior)
-intercornual
