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Pelvis

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Fichas del conjunto (18)

1Os CoxaeIlium + Ischium + Pubis
2bony features of the pelvis
3Sacrum and Sacroiliac jointSacrum=5 sacral vertebra
fuse after puberty
Synovial joint with fibrocartilage inside
slight movement, during pregnancy
Strong ligaments
coccyx inferiorly
4Pubic SymphysisNo movement
During pregnancy some movement
Fibrocartilaginous disc
Reinforced by
Superior pubic ligament
Inferior pubic ligament
5The hip Male vs FemaleFemale -
childbearing
Enlarged pelvic outlet
Broader pubic angle, > 100 males are 90 or less
Less curvature of sacrum and coccyx
Wider, more circular pelvic inlet
Broader pelvis
Ilia project farther laterally
Ilia don’t project as far superiorly
6Femoral TriangleThe femoral triangle is bounded: (superiorly) by the inguinal ligament. (medially) by the medial border of the adductor longus muscle. (laterally) by the medial border of the sartorius muscle.
LVAN
lymph Vein Artery Nerve
7Arteries throughout the hip into legFemoral

Popliteal

anterior & posterior tibial arteries

arches in the foot
8veins throughout the hip into legGreat saphenous
|
Popliteal
|
small saphenous
|
fibular
|
arches of foot
9Major Nerves to the lower limb- Lumbosacral Plexus
- Femoral
- Obturator
- Sciatic
10Lumbosacral PlexusLumbar & Sacral Nerves L1 – S3
To pelvic organs & lower limb
Sensory, motor & autonomic
11Femoral NerveL2 – L4
Motor:
Anterior;sartorius and quadriceps
Medial; pectineus and iliopsoas
Sensory:
Anteromedial thigh, medial leg and foot
12Obturator NerveL2-L4
Motor
Adductors
Adductor Magnus (ischial portion)
Sensory
Medial thigh
13Sciatic NerveL4-S3
Motor
Hamstrings, Adductor Magnus (hamstring portion)
Largest nerve
Exits pelvis posteriorly via greater sciatic foramen below piriformis
Divides above popliteal fossa into tibial and fibular/peroneal
Most common injury – disc compression at nerve root level
14AcetabulumDeep fossa
Horseshoe shaped fibrocartilaginous pad
fibrocartilage rim - ‘acetabular labrum’
Missing inferior segment: acetabular notch
15Head of femurHead of femur (ball)
Covered with articular cartilage except fovea
Neck of femur
Greater trochanter
Joint capsule extends to the intertrochanteric line (anterior) and crest (posterior)
16Transverse acetabular ligamentfills in gap in acetabular labrum
17Ligament of femoral head (ligamentum teres)from transverse acetabular ligament to centre of head of femur
18Angle of inclinationBetween head and neck of femur, and shaft of femur
Adult: 115o – 140o
females < males
puts strain on NOF
What happens if the angle is too SMALL?
What happens if the angle is too BIG?