pregnancy Flashcards
12 weeks
Uterus/baby/hormone
baby size of grapefruit
uterus rises above pelvic rim
peak production of relaxin = lig laxity = joint instability and irritation
12 weeks
A. muscular
shortening of rectus abd and A. hip muscles on stretch
12 weeks
TSP
breast increase = increase tsp kyphosis
= flexion = irritates discs
TSP kyphosis increase = reduced rib expansion and circumferenced increases by 5-7cm
compromised thoracic outlet = compressed on A disc which stretches P. disc and compression on brachial plexus
12 weeks
pelvis
ASIS, AIIS, pelvic P. tilt = hip flexes on stretch eg rectus femoris = strain/tightness
decrease lordosis LSP = more in flexion which increases the pressure on discs and irritates them and potential annular strain or herniation
increase sacral count nutation
24 weeks
A. muscular / visera
uterus outside pelvic bowl and into diaphragm
this causes diaphragm to elevate = tsp to extend and open, which also affects breathing mechanics
24 weeks
TSP
lower ribs expand out
distal sternum elevate to make more room
csp lordosis increase = increased extension = will approximate the facets and lead to facet irritation
TOS and 1st rib dysfunction due tp being pushed up
centre of gravity moves more posteriorly
Lower ribs displace as need to expand laterally = rib head irritation
24 weeks
pelvis
can start to A. rotate = increase lumbar lordosis = facet irritation
this stretches hamstrings = strain
Flexors and adductor muscles work to stabilise = strain
30 weeks
TSP
increase kyphosis @ CT junction = strain
And disc irritation
Thoracis inlet compromise = heart burn
increased posterior centre of gravity to balance out anterior weight
30 weeks
Pelvic
Pubic strain due to baby posture / pressure
A. rotation = stretch through abdominal wall
increase sacral nutation
coccyx needs to flex
80% develop lordotic posture
30 weeks
legs
hips Laterally rotate = foot turned out = altered gait to make room for baby
40 weeks
pelvis
P. rotates and flatterns lumbar causing hamstrings to be more on stretch and potential annular strain and disc irritation and herniation
more weight bearing through pelvic floor rather than abdomen muscles
40 weeks
ribs / sternum
rib circumference increases by 5-7cm
sternal angle elevates
rib head irritation due to rib expansion of rib cage due to baby moving abdominal organs superiorly
40 weeks
venous pressure
increase venous pressure and congestion on loading = haemorrhoids and varicose veins