Femur Flashcards
What is femur bone ?
Longest and strongest bone of the body
What are its parts ?
Rounded head a long shaft convex and Biconcondylar end
What is it’s side determination ?
Head medically lower end convexity
What does upper end of femur consists of ?
Head , neck greater and lesser trochanter foevea intertrochanteric line and crest
Intertrochanteric crest side ?
Post
Head feature
It is more than 1/2 of sphere medially forward
Head articulates with ____
Acetabulum of hip joint
Neck is about ___ cm
3.7
Necks border and surfaces
2 each
Upper border and lower border
Up- concave
Horizontal
Meets with greater trochanter
Lower - straight
Oblique
Meets shaft near lesser trochanter
Anterior and posterior surfaces
Ant - flat
Intracapsular and articular cartilage extend upto this surface
Meets shaft at intertrochanteric line
Post - convex from above down
Concave side to side
Meets shaft at intertrochanteric crest
Little more Medial 1/2 intracapsular
Post surface crossed by longitudinal groove for which tendon and inserted on.
Obturator externus into trochanteric fossa
Angle btw neck shaft and trochanter shaft
125 ,8
Why angle less in females ?
Wider pelvic
Func of head shaft
Movements of hip joint
Head shaft is thickness by
Calcar femorale
Radiological impo of tro shaft angle
Direction of medullary canal
Alignment with greater trochanter
What is angle of of femoral torison or anteversion?
15 transverse line join up and lower ends of femur
Blood supply to intracapsular neck derived from
Retinacular arteries trochanteric anastomosis
Extracapsular neck
ascending branch of medical circumflex femoral artery
Features greater trochanter
Large quandrangular prominance
Locan: upper part junc of neck and shaft
Upper boarder lies centre of head
What are the border and surfaces of gtrochanter
Upper border apex
3 surface : ant ,lateral medial
Ant : rough -lateral part
Medial : above - rough impression
Below - deep trochanteric fossa
Lateral : crossed by oblique ridge - downwards and forward
Feat of lesser trochanter
Conical eminence
Medially and backwards
Junct btw neck and shaft - posteroinferior
Intertrochanteric line features
Junc of ant surface of neck and shaft
Prominant ridge
At anteriosuperor angle of great trochanter as tubercle
Below - continuous spiral line front less trochanter - reach posterior surface of shaft
