Download Unit Mystery: Do bones and muscles grow back stronger after injury

Unit Mystery: Do bones and
muscles grow back stronger
after injury? Or do you lose it
when you don’t use it?
The painful pros and cons of healing
Unit Mystery:
• The muscular and skeletal systems work hand
in hand, so it should be no surprise that what
effects one, effects the other.
• But what happens to bone and muscle placed
on rest (like in a cast) for a LONG time? Do you
really lose it if you don’t use it? Or does it
repair stronger than before?
• The answer is not so simple: We will explore
several unit objectives to answer these
question at the END of the unit. Keep an eye
out for evidence (and clues) in the following
objectives:
Do People who do bone
stretching heal stronger than
before?
• You need to know the names of bones and
muscles so that you can site them in examples
• You need to know the parts of a long bone
involved in healing and growth
• You need to know the stages of bone
repair/healing and types of fractures
• You need to know the functions of the skeletal
and muscular systems
• You need to know Wolfe’s law
• You need to know about causes of atrophy in
muscle and how muscles are built
Evidence/Clue 1- Bone Stretching
• Bone stretching video
https://www.youtube.co
m/watch?v=nrPKaTDkQv
E
Clue 1:Parts of a long bone
•
•
TISSUES:
Spongy bonecompresses, light
– Stores Calcium
•
Compact
bone=strong,
exterior.
Clue 2: Bone growth
•From cartilage to
bone= ossification
•Ends for teens at the
epiphyses
•Bones remodel
constantly as adults
but don’t change
length
Clue 3:Bone repair
Clue 4: Wolfe’s law
• https://www.youtube.c
om/watch?v=yENNqRJ2
mu0
• Long bones are thickest
where they are most
likely to break.
• This remodeling also
occurs due to changes
in muscle building or
loss.
Clue 5: Fascia
• Muscles are wrapped in multiple layers
of fascia or connective tissue
• Helps bundle muscle cells and muscle
groups together
• Provides strength and stability
• Is constantly added to and torn down
each day
• Some fascia tears or melts as we move &
gets rebuilt when we don’t
• If injured, sometimes the body adds
more fascia
• This is compounded because we
immobilize injured parts
Clue 5: Atrophy and
contracture
• Atrophy: Poor muscle development
as a result of disease or lack of use,
muscle wasting.
• Contracture: Abnormal shortening
of muscle fibers, tendons, or fascia
making it difficult to stretch a
muscle. (typical of bed rest)
• Adhesion: Scar tissue (from Sx or
injury) forming in fascia
surrounding muscle, making it
difficult to stretch.
• Hypertophy: Increase muscle bulk
as a result of use (work out).
Myofascial Release
• Heat and pressure devises
used to part some of the
fascia & increase mobility
• Requires repeat
treatments
• Rollers, combs, massage
Can you solve the mystery?
• Use information from EACH clue to:
– Describe the bone stretching procedure (steps and
goals)
– Discuss the potential recovery outcomes (will they
have bones that heal stronger, why or why not)?
– Would their muscle be effected? IF so how?
– When an athlete breaks a bone or tears a muscle,
will it come back stronger? Why/why not?