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AAAC23 21/5/05 10:46 AM Page 54
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The pelvis Icthe bony and ligamentous pelvis
Iliac crest

Anterior gluteal line Iliac fossa
Inferior gluteal line
Posterior superior
Anterior superior
iliac spine
iliac spine
Anterior inferior Posterior gluteal line Auricular
iliac spine surface
Acetabulum Greater sciatic notch
Obturator foramen
Iliopectineal
Pubic tubercle Spine of ischium line
Pubic crest Lesser sciatic notch Pubic
tubercle
Ischial tuberosity
Body of pubis
Pubic
Ramus of ischium
Inferior ramus symphysis
Fig.23.1 Fig.23.2
The lateral surface of the left hip bone The medial surface of the left hip bone

Spinous tubercle
Superior articular
Body weight
facet
Ala
Articular tubercle
Posterior sacral False
foramen pelvis
Auricular surface Greater sciatic foramen
Transverse tubercle
Pelvic brim
Sacrospinous ligament
True pelvis
Lesser sciatic foramen
Sacral hiatus Sacrotuberous ligament

Fig.23.4
Fig.23.3 The sacrospinous and sacrotuberous ligaments resist
The posterior surface of the sacrum rotation of the sacrum due to the body weight

Sacral nerves Piriformis
Coccygeus
Spine of ischium
Ischiococcygeus
Puborectalis Recto-anal junction
Fig.23.5 Perineal body
The male pelvic floor from above. Prostate Obturator fascia
The blue line represents the origin Obturator internus
of levator ani from the obturator Anterior edge Levator prostatae
fascia of levator ani

54 Abdomen and pelvis