Biomechanics All Quizzes Review Flashcards
Bone is highly vascular … T/F?
True
A Metatarsal is considered what type of bone?
long bone
the epiphyseal plate primarily consists of what type of cartilage
hyaline cartilage
biomechanics of human motion most often focuses on what kind of mechanics?
rigid-body mechanics
T/F … Kinematics primarily focus on changes in motion.
False
Two specific areas where the endosteum is located?
- medullary cavity
2. Haversian canal
Describe a synchondroses joint
a. growth plate
b. hyaline cartilage
name the most abundant type of cartilage in the human body
fibrous cartilage
4 essential components of a synovial joint
- synovial fluid
- synovial membrane
- joint
- articular cartilage
identify a specific sesamoid bone and describe 2 functions
a. patella
b. protects tendon + mechanical advantage
a saddle type joint is considered what kind of “axial”
biaxial
provide nam of space where osteocytes are located
Lacunae
T/F … lamellae are located in both compact and spongy bone.
True
The metacarpophalangeal joints of digits #2-5 are classified as:
condyloid
Describe Wolff’s law:
With increased loads, bone becomes stronger.
Bone remodels itself when needing to adjust to more forces.
Bone is comprised of % water?
15%
T/F … bones are strongest under tensile loads.
False
describe primary purpose of canaliculi.
To communicate between osteocytes.
Bending is a combination of what 2 forces:
- compression
2. tension
T/F … linear motion occurs when all points on a body or object move the same distances, in the same direction, and at the same time around axis of rotation.
False
Tendon and ligament have similar ability to resist certain loads. name one that is slightly superior.
Tendon
how does hyaline cartilage get its nutrition?
diffusion compression joint loading synovial fluid (all)
T/F … force has magnitude but not direction
False
Newton’s third law
Every action has an equal and opposite reaction.
T/F … internal ligament forces produce a tensile force on the bone.
True
T/F … a “slide” is when a single point on one articular surface contacts multiple points on another articular surface
True
For shoulder / glenohumoral joint – identify axis of rotation for
a. flexion / extension
b. abduction / adduction
a. Medial/Lateral
b. Anterior/Posterior
equation for torque:
T = F*MA
What is excursion of the horizontal plane if patient has 45* of GH internal rotation and 40* of external?
85*
Normal angle of inclination for proximal femur
15*
T/F … intertrochanteric line is located on posterior aspect of femur
True
Name the hole in head of femur for blood supply
fovea capitus
Femoral torsion is a measurement of angulation of proximal femur in what plane?
transverse
If patient presents with R hip pain and shortening of R limb, diagnosis would be:
coxa vara
