pelvic ligaments and fascia

sacrospinous ligament

attachment points: ischial spine to sacrum

fiber direction: M to L, P to A

associated structures/function: limits movement of pelvis and sacrum, converts greater and lesser sciatic notches into G/L foramen

sacrotuberous ligament

attachment points: ischial tuberosity to lateral borders of sacrum and coccyx

fiber direction: M to L, S to I, O, P to A

associated structures/function: stabilize pelvis and sacrum, limit movement, converts greater and lesser sciatic notches into G/L foramen

inguinal ligament

attachment points: ASIS to pubic tubercle

fiber direction: M to L, S to I

associated structures/function: prevents excessive movement, support, attaches external oblique muscles to pelvis, forms boundary of femoral triangle and inguinal canal

iliolumbar ligament

attachment points: lateral tip of transverse processes of L5 and L4 to superior aspect of the iliac crest and iliac fossa

fiber direction: M to L, with an upper band and lower band

associated structures/function: stabilizes sacroiliac joint, strengthens lumbosacral joint, supports mobility, limits range of motion through lumbosacral junction

posterior sacroiliac ligament

attachment points: lateral crest of sacrum to the iliac crest (superficial to other supporting ligament on sacrum)

fiber direction: nearly horizontal

associated structures/function: provide reinforcement of joint of sacroiliac joint, pelvic stability by limiting the displacement of the ilium from the sacrum

anterior sacroiliac ligament

attachment points: lateral aspect of the ilium to the third sacral segment

fiber direction: nearly horizontal

associated structures/function: reinforces joint, thickens joint capsule

interosseous sacroiliac ligament

attachment points: deep to the posterior sacroiliac ligament

fiber direction: nearly horizontal

associated structures/function: prevent anterior/posterior movement of the sacrum, prevents abduction or destruction of the sacroiliac joint

*STRONGEST LIGAMENT IN THE BODY

lacunar ligament

attachment points: pubic tubercle and superior pubic ramus

fiber direction: posteriorly and attach to pectineal line

associated structures/function: fibers of inguinal ligament and fascia lata

pectineal ligament

attachment points: extension of lacunar ligament, runs on pectineal line of pubic bone

fiber direction:

associated structures/function: runs along pubis along superior ramus, highly resistant

conjoint tendon/inguinal aponeurotic falx

attachment points: runs along pectineal line

fiber direction:

associated structures/function: transversalis abdominis, and internal oblique muscle - adds strength to medial aspect of posterior inguinal canal wall

linea alba

attachment points: xiphoid process to pubic symphysis

fiber direction: spans A/P midline of the abdomen

associated structures/function: connection point for most abdominal musculature

fascia transversalis.

attachment points: between abdominal wall muscles and peritoneum cavity

fiber direction: A/P

associated structures/function: separate the abdominal wall from peritoneum

rectus sheath fascia

attachment points: formed by aponeurosis of transverse abdominal and I/E oblique muscles

fiber direction:

associated structures/function: encloses rectus abdominis and pyramidalis muscles, protects muscles and vessels it encloses, support to abdominal viscera