Gross Lecture Exam 3 Flashcards
The three primary functions of the lower extremity
support weight of body
provide stable foundation while standing
allow locomotion
Modifications to lower extremities to accommodate its functions. (compared to upper extremities)
Bones are heavier and stronger
Joints are stronger and more stable
Muscles are more powerful and less capable of delicate movement
Blood Vessels are larger
Pelvic Bone (Os Coxae or Pelvis) consists of what two things? What do these two things articulate with?
Two innominate bones
They articulate with the sacrum, femur and each other
Three bones that make up the innominate
ilium ischium and pubis
what makes up the hip joint
acetabulum and head of femur
what is the name for the horshoe shaped surface of the acetabulum
lunar surface
name for the rough non articular surface of the acetabulum
acetabular fossa
outside edge of acetabulum (name it) which is deficient inferiorly is the___ that is bridged by connective tissue knowns as….
acetabular rim
acetabular notch
transverse acetabular ligament
What are the three lines on the external or lateral surface of the ilium
anterior posterior and inferior gluteal lines
posterior to the iliac fossa what are the two disticnt areas?
more superior one has ligaments attach and more inferior one is where the innominate articulates with sacrum
Iliac tuberosity
auricular surface
what marks the boundry between major or false pelvis from minor or true pelvis
arcuate line
Know ASIS, AIIS, PSIS, PIIS
oik
what is found on the most lateral aspect of the iliac crest?
iliac tubercle
just inferior to the PIIS is a deep notch
Greater Sciatic Notch
What two things make up the L shaped Ischium?
Which portion enters into the formation of the acetabulum?
Body and Ramus
the body
What is the name for the small projection of the body of the ischium? The small notch below it?
Ischial spine
Lesser sciatic notch
Inferior to the lesser sciatic notch is a large roughened area
ischial tuberosity
What three things make up the pubis?
Body and 2 rami
What is the other name for the pubis symphysis?
Symphyseal surface
The name for the superior rams of the pubis as it terminates
iliopubic eminence
prominent ridge on the superior ramus of the pubis
pubic pecten (pectineal line)
What extends posterior and inferior from the body of the pubis to join the ramus of the ischium?
inferior ramus of the pubis
name for the indentation found at the superior anterior border of the obturator foramen? name for the piece of connective tissue over the hole?
obturator groove
obturator membrane
What is the False Pelvis (Major) bode by posteriorly? Laterallly? anteriorly?
lumbar vertebrae
ilium
abdominal wall
what is the true pelvis bounded by posteriorly? laterally? anteriorly?
sacrum and coccyx
ilium, ischium, and pubis
What re the 4 functions of the pelvic bone?
Protect pelvic viscera
Transmit bodyweight to limbs
Allow locomotion
Provide bony support for birth canal
Pelvic inlet male and female?
Male heart shaped
female rounded or oval
Pelvic outlet
Male narrow
female wide
ASIS
male closer together
female farther apart
Greater Sciatic Notch
Male narrow
female wider
Obturator Foramen
Male Round
Female Triangle
Acetabulum direction
male face laterally
female face anteriorly
Symphysis pubis
Male longer
Female Shorter
Pelvic Arch
Male acute
Female Obtuse
What is an android pelvis?
gynecoid?
Anthropoid?
Platylpelloid?
Typical male
Typical female
exaggerated male
exaggerated female
Which pelvic areas are most prone to fractures? 4
Pubic rami
acetabulum
SI joint region
most lateral aspect of ilium
Fractures often occur in two places cuz pelvis is solid bone ring. Where do they occur?
Initial force site and 180 degrees opposite to it
What is usually assumed with pelvic fractures?
internal damage
Name for a common painful contusion of soft tissue around iliac crest?
Hip Pointer
What are the three primary centers of ossification of the pelvis?
Ilium Ischium and Pubis
5 secondary ossification centers of the pelvis?
iliac crest
anterior inferior iliac spine
ischial tuberosity
pubis symphysis
center of acetabulum
When does the ossification of the pelvis end?
between 20 and 22 years of age
What is the longest, heaviest, and strongest bone in the body?
Femur
What is the name for the pit or small depression on the head of the femur?
Fovea capitis (attachment site for capitis femoris ligament)
Deep pit between neck of femur and greater trochanter?
Trochanteric fossa
What joins the trochanters posteriorly? Anteriorly?
Intertrochanteric Crest
Intertrochanteric Line
What is located on the Intertrochanteric crest? its a prominent bump
quadrate tubercle
Which three lines make up the linea aspera? where are they located?
Spiral - posterior aspect of shaft
pectineal - just inferior to lesser trochanter
gluteal (tuberosity) - just inferior to greater trochanter
Added projection on the medial epicondyle
adductor tubercle
most superior part of the intercondylar fossa
intercondylar line
What are the ossification centers for the femur
Primary : shaft
Secondary : head, both trochanters, distal end (condyles and epicondyles)
When is ossicification of femur done?
by 15 years in male 17.5 female
What is an increase of angle of inclination which can occur with developmental dysphasia of hip?
Coxa Valga
Decrease of angle of inclination which occurs in fractures of proximal femur and rickets. causes mild shortening
Coxa Vara
Femur fractures describe
Common - esp osteoporosis
avascular necrosis if obturator artery, femoral artery, or lateral/medial femoral circumflex arteries are damaged
Main functions of the patella?
give more leverage to quadriceps during last part of leg extension. increases power
Ossification centers of the Patella. When does it start and stop?
ONE single center that appears in the 3rd year of life. fully developed at 10 years male 13 female
Describe direct trauma fracture of patella
indirect trauma
broken into many small fragments but not displaced
quads contract to cause transverse fracture. displaced or not displaced
symptoms of patella fracture
severe pain
swelling tenderness
cant extend
What are the two developmental anomalies of the patella?
Patella Emarginata - superior lateral portion unossified
Bipartite or tripartite patella - superior lateral portion ossified independently.
what is the softening and fissuring of the articular cartilage on the posterior aspect of the patella?
Caused by?
Symptoms
Chondromalacia
trauma, overuse, muscle weakness
pain under patella worse with exercise and flexion to extension
What are the functions of the fascia lata?
provide dense envelope for thigh to prevent bulging out of thigh muscles
enhances thigh muscle effectiveness