Bontrager Chapter 7: Femur and Pelvic Girdle Anatomy

the ischial tuberosity is ___ to _ ______ below the symphysis pubis

1 1/2 to 2 inches (or 5 cm)

What are the 3 parts of each hip bone?

1. Ilium 2. Ischium 3. Pubis *these 3 bones begin as separate divisions

Name the two parts of each ilium

1. body (the inferior portion of the ilium near the acetabulum + superior 2/5ths of the acetabulum 2. ala / wing thin, flared, superior portion of the ilium

The ischium is divided into what two portions

1. body. (makes up posteroinferior 2/5ths of acetabulum) 2. ramus (projects anteriorly from the iscial tuberosity

Name the four essential parts of the proximal femur

1. head 2. neck 3. greater trochanter 4. lesser trochanter

What are the differences in the pelvis between males and females?

1. the angle of the pubic arch, formed by the inferior rami female: angle is obtuse male: angle is acute 2. male pelvis is narrower, deeper from front to back, less flared. 3. shape of the inlet in the female pelvis is usually larger and more rounded shape of the male inlet is more narrow and oval or heart shaped

The body of the pubis includes the anterior ____th of the acetabulum

1/5

in the anatomical position, the femur's longitudinal plane is approximately how many degrees from vertical?

10*

what is the anterior angle of the head and neck of the femur in relation to the shaft of the femur?

15* - 20* anterior see page 262 fig 7-3

Name the four bones that the general pelvis consists of

2 hip bones (ossa coxae aka innominate bones) 1 sacrum 1 coccyx

What is the angle of the neck to the shaft of the femur?

approx 125* +/- 15*

The longest and strongest bone in the body is the ____________

femur.

what is the name of the depression (pit) near the center of the femoral head?

fovea capitis. This is the site of a major ligament attachment (the ligament capitis femoris aka ligament of the head of the femur)

Name the thick ridge that joins the trochanters posteriorly

intertrochantic crest

The _______ ___________s bear most of the weight of the body when an individual sits. They can be palpated through the soft tissues of each buttock in the prone position.

ischial tuberosities

The _______ is the part of the hip bone that lies inferior and posterior to the acetabulum

ischium

obturator foramen

large opening formed by the ramus and body of each ischium and by the pubis largest foramen in the human skeletal system

anterior inferior iliac spine

less prominent projection below the asis

posterior inferior iliac spine

less prominent projection below the psis

what does the true pelvic girdle consist of?

only the two innominate hip bones NOT the sacrum or coccyx

iliac crest

superior margin of the ala. extends from ASIS to the PSIS (anterior superior iliac spine) (posterior superior iliac spine)

Which side of the femur is the greater trochanter located?

superiorly and laterally to the femoral shaft. easily palpated.

the prominence of the greater trochanter is at about the same level as the superior border of the _________ _____

symphysis pubis

Pelvic Brim

the oblique plane divides the pelvic area into two cavities 1. greater (false) pelvis: the INLET area above the pelvic brim consisting of the alae iliac wings 2. lesser (true) pelvis: the OUTLET area defined by two ischial tuberosities and the tip of the coccyx

Which side of the femur is the lesser trochanter located?

the smaller, blunt conial eminence projects medially and posteriorly from the neck-shaft junction of the femur.

The ____ ______ forms the actual birth canal in females

true pelvis