Lecture 5 Flashcards
(29 cards)
frontal plane
anterior and posterior halves
transverse plane
inferior and superior portions (twisting)
sagittal plane
left and right sides
anteroposterior axis
-front to back
-associated with the frontal plane
longitudinal axis
-top to bottom
-associated with the transverse plane
Mediolateral axis
-side to side
-associated with the sagittal plane
the human body is made up of _____ connected by ______
rigid segments (bones)
rotational constraints (joints)
the shoulder (glenohumeral) joints
ball and socket joint
greatest range of motion and movement potential out of any joint in the human body
shoulder (glenohumeral) joint movements
flexion and extension:
-sagittal plane and mediolateral axis)
abduction and adduction:
-frontal plane and anteroposterior
medial and lateral rotation
-transverse plane and longitudinal axis
the elbow joints
ulnahumeral and radiohumeral joints
-hinge joints
superior and inferior radioulnar joints
-pivot joints (allows for supination and pronation)
the hip (acetabulofemoral) joints
ball and socket joints
hip (acetabulofemoral) joint movements
flexion and extension
-sagittal plane and medioalterla axis
abduction and adduction
-frontal plane and anterior posterior axis
medial and lateral rotation
-transverse plane and longitudinal axis
the knee (tibiofemoral) joints
double condyloid or modified hinge joints
significant translation accompanies knee joint motion
knee (tibiofemoral) joint movements
flexion and extension
-sagittal plane and mediolateral
medial and lateral rotation
-transverse plane and longitudinal axis
the ankle (talocrural) joint
hinge joint
ankel (talocrural) joint movements
dorsiflexion and plantar flexion
-sagittal plane and mediolateral axis
Joint angles
the angle between the longitudinal xis of two segments
defined as the angle of one segments relative to another segment
the angle vertex
is aligned with the joint connecting two segments
describes the relative position of two segments
Joint angle conventions
a system of lower limb conventions has been proposed for two-dimensional sagittal plane rotations of the hip, knee and ankle joints
with this system, it is assumed that the right side of the body is captured
hip angle convention:
when the angle is positive the hip is in a ______ position
flexed
hip angle convention:
when the angle is zero the hip is in a ________ position
neutral
hip angle convention:
when the angle is _______ the hip is in a extended position
negative
knee angle convention :
when the knee angle is _______ the knee is in a flexed position
flexed (most of the time where it is)
knee angle convention :
when the knee angle is zero the knee is an _______ position
extended