Week 5 - Muscle & Soft Tissue Length Flashcards
Full ROM across a joint is dependent on 2 components:
- Joint ROM
2. Muscle Length
Where is Range of Motion and Muscle Length in the Guide to Physical Therapist practice?
Test and Measurements
Muscle Length and Flexibility are often used synonymously to describe ____
the ability of a muscle to be lengthened to end of available ROM
T/F: Clinically we can measure muscle length directly.
False - Clinically Muscle length is NOT measured directly.
How do we measure muscle length clinically?
Indirectly by determining the maximal passive ROM of the joint(s) crossed by the muscle.
Muscle length or flexibility refers to ___
the ability of a muscle crossing a joint to lengthen, allowing one joint or a series of joint to move though the available ROM.
T/F: Muscle length refers to elongation or lengthening of the muscle to permit FULL joint ROM.
True
In most cases when a muscle passes over a single joint, joint ROM and Muscle length will be ___
In most cases when a muscle passes over a single joint, joint ROM and Muscle length will be THE SAME
Give an example of a muscle that crosses over a single joint and will have the same joint ROM and Muscle Length.
Ex. Pectoralis Major - Clavicular or Sternal Fibers
For muscles that pass over 2 or more joints, the typical amount of muscle length or elongation will be ___ than total ROM of the joints over which the muscle passes.
For muscles that pass over 2 or more joints, the typical amount of muscle length or elongation will be LESS than total ROM of the joints over which the muscle passes.
Give an example of a muscle that pass over 2 or more joints, whose length or elongation will be LESS than total ROM of the joints over which the muscle passes.
Knee flexion or prone vs supine
Define Static flexibility
defined as the passive ROM available to a joint or series of joints
How is Static flexibility measured?
Measured using a goniometer or by a number of tests such as toe touch, sit and reach
Decreased static flexibility indicates ____
a loss of motion
Define Dynamic flexibility
defined as the degree to which the force of a muscle contraction can move a joint
What is an important measurement in Dynamic Flexibility?
stiffness
Define Stiffness
a mechanical term defined as the resistance of a structure to deformation
What are two ways you can increase stiffness?
- Strength Training
2. Immobilization
Terms to describe muscle flexibility (3)
- Tightness
- Adaptive Shortening
- Contracture
Define Tightness
Mild decrease in the length of the muscle after sitting for short periods of time or following exercise.
