🔴There are two hip bones(Right& Left) The bone is a large irregular bone,articulates in front with the corresponding bone of the opposite side. Posteriorly, two hip bones articulate with the sacrum.
🔴️Parts:1) Ilium, 2)Ischium & 3)Pubis.
🔴️Side determination:-
1.The acetabulum directed laterally.
2.The flat,expanded ilium forms the upper part of the bone,that lies above the acetabulum.
3.The obturator foramen lies below the acetabulum.
🔘Ilium:-
🔶2 ends:
1)Upper end(Iliac crest)
2)Lower end-samller,fused with pubis & ischium in the acetabulum.
Forms:upper 2/5th of acetabulum.
🔶3 borders:Anterior,Posterior &Medial.
🔶3 surfaces:Gluteal,Iliac fossa & Sacropelvic surface.
🔷Iliac crest:-
🔸2segment;
Long Ventral segment(outer lip, inner lip,intermediate area);
Short dorsal segment(Medial & Lateral slope).
🔶Ventral segment-
🔹Outer lip:
♦Attachment-Fascia lata(whole extent)
♦Origin:Tensor fascia lata(In front of tubercle) & Lattisimus dorsi(Behind the highest point of crest)
🔹Inner lip:
A)Anterior 2/3rd-
♦Origin:Transversus abdominis
♦Attach:Fascia transcersalis &Fascia iliaca.
B)Posterior 1/3rd-
♦origin:- Quadratus lumborum
♦Attach:-Thoracolumbar fascia.
🔶Dorsal segment:
1)Lateral slope:- origin- Gluteus maximus muscle.
2)Medial slope:- Origin-Erector spine muscle.
🔹Anteriorsuperior iliac spine:-
♦Attachment-Lateral end of inguinal ligament.
♦Origin:Sartorius muscle.
🔴️Borders:-
1.Anterior border-
★Extend form ant. superior iliac spine to acetabulum.
♦Origin-Straight head of rectus femoris.
♦Lower part attchment-Iliofemoral ligament.
2.Posterior border-
★Extend from posterior sup.iliac spine to posterior border of ischium.
♦Attachment:
Upper part-Sacro tuberous ligament
3.Medial border-
♦Inserted to middle arcute line:Psoas minor.
Ventral sacro iliac ligament
🔴️Surfaces:-
🔘Gluteal surface:
Divided by 3 lines-
i)Posterior gluteal line;
ii)Anterior gluteal line,
iii)Inferior gluteal line.
♦Origin of mucle:-
a)Gluteal maximus
b)Gluteal medius
c)Gluteal minimus
d)Rectus femoris
🔘Iliac fossa:-
♦Origin-Iliacus muscle from upper 2/3rd.
🔘Sacro-pelvic surface:-
1)Iliac tuberosity-
🔹Attachment(Above to down):
a)Interosseous sacroiliac ligament
b)Dorsal sacroiliac ligament
c)Iliolumber ligament.
2)Auricular surface:-
🔹Attachment -Ventral sacroiliac ligament(convex margin)