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8/14/2019 femur 2013.pptx
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MEDRADSC 2D03
Femur
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Proximal Femur Consists of: head, neck and 2
bony prominences Greater and
Lessertrochanter
head forms 2/3 ofsphere
directed upward andmedially
head and neck inclined
at an angle to shaft angle of
inclination
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Head
smooth, articular
cartilage
except smallroughened
depression
fovea(below
centre)
ligamentum teres
extending from fovea
to sides of
acetabular notch
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Neck 50mm longjoins shaft at 125
degrees (angle of
inclination) ensures lower limb
swings free of pelvis
neck slightly
flattened demonstrates ant.,
post., upper & lower
borders
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Neck Upper border
short, almosthorizontal, slightlyconcave
Lower border-
longer, runningobliquelydownwards
Anterior surface-
ridge at junction ofneck and shaft
Known asintertrochantericline
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Neck
Posterior surface prominent
intertrochanteric
crest
trochanters on eitherside of crest
middle of
intertrochanteric crest is
small bony elevation
quadrate tubercle
attaches strong
capsular ligament
of hip joint
Ant. Vs Post.
(seen above)
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Greater trochanter Bony prominence
projecting upwardsand lateral fromjunction neck andshaft
Has roughenedsurface - insertion ofmajority of buttockmuscles:
gluteus minimus piriformis
vastus lateralis
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Greater trochanter
Upper posterior
aspect extends
medially and
overhangs aroughened
depressed area
trochanteric fossa-insertion obturator
externus muscle of
pelvis
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Lesser trochanter small prominenceprojectingmedially belowintertrochantericcrest at junctionneck and shaft
posterior surfacesmooth
upper andanterior surfaceroughened forattachment of:
psoas major Iliacus
vastusmedialis
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Shaft long, cylindrical narrow shaft, widest distally
long axis 10 degrees fromthat of tibia
slight forward convexity posterior surface
well marked bony ridge
linea aspera- nutrient
arteries close to thisAttaching adductors:
Vasti
short head of bicepsfemoris
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Shaft upper posterior surfaces
widens to form V
2 ridges converge tobecome continuous with
linea aspera Lateral ridge - gluteal
tuberosity
Gluteus maximusmuscle attachment
Medial ridge - spiral lineor pectineal line
runs continuous tointertrochanteric
line
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lower 1/3 - posteriorsurface
linea aspera dividesinto lateral and
medial suparcondylarlines
triangular surfacebetween lines - poplitealsurface
forming floor upperpart of popliteal fossa
popliteal artery runshere - separated
from bone by fatlayer
Shaft
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Thats all for the Femur Folks!!