Lecture 6- Joint Mobilizations, Selective Tissue Tensioning Flashcards
JOINT MOBILIZATIONS
JOINT MOBILIZATIONS
- What type of tissue is the joint capsule?
- The joint capsule forms a “_______” around the joint.
- What determines the thickness of the joint capsule?
- dense fibrous connective tissue
- sleeve
- stresses placed on it
What are the 3 main roles of the joint capsule?
- seals joint space
- provides passive stability by limiting movements
- provides active stability via its proprioceptive nerve endings
Why is the proprioception of the joint capsule important?
If a PT starts to dislocate, their proprioceptors will sense that and muscles will respond.
Tight capsular structure will cause early and excessive accessory motion in the _________ direction of the tightness.
-opposite
Injury to a joint or structures surrounding a joint will often lead to what?
- pain
- loss of motion (inflammation)
- excessive motion (overstretched)
In what position do we perform our joint mobilizations?
open pack = resting position
Why do we want to perform our joint mobs in the open pack position?
This is where structures are the least tight, allowing for the greatest mobility.
In the open pack position we have:
- surrounding tissue is as ______ as possible
- _________ incongruency
- intracapsular space is as _________ as possible
- ________ amount of joint play available
- lax
- maximal
- large
- maximal
In the closed pack position we have:
- joint positions where joint is ________ congruent
- surrounding tissue (capsules and ligaments) under ______ tension
- ________ stability of the joint
- most
- maximal
- maximal
Why don’t we perform joint mobs in the closed pack position?
This is where the bones are maximally congruent, if you “win” when a PT is in a closed pack position, it could cause damage.
What are the 3 things we are testing when assessing joint mobility?
- gross (quantity of movement)
- end-feel (quality of movement)
- provocation
What are the 3 gross (quantity of movement) classifications?
- hypomobile
- normal
- hypermobile
What are the 3 end-feels (quality of movement)?
- firm
- hard
- empty
What is an example of why it is important to know end feels?
If you are expecting a firm end-feel but it is hard, it’s important to ask why you are felling bone-to-bone at that joint. If you ignore this and keep joint, you could break bones over stretching a patient.
What is an empty end-feel?
When you could have moved the joint further, but the patient stopped due to pain.
The original classification scale for joint mobility was on a scale of 0-6 with 0 being ________, 3 being _________, and 6 being __________.
- no movement
- normal
- unstable
What is hypomobility?
What may cause this?
- motion stops short of anatomical limit, instead stops at pathological point of limitation
- pain, spasm, adhesions, inflammation
What is hypermobility?
Joint moves beyond its anatomical limit because of laxity of surrounding structures
What are the indications for performing joint mobilizations as a treatment?
- break pain cycle
- increase joint extensibility
- increase extensibility of tendons, muscles, fascia
- increase joint ROM
- promote muscle relaxation
- improve muscle performance
What are the biomechanical effects of joint mobilizations?
- motion improvement
- positional improvement
- increase joint capsule extensibility
What are the nutritional effects of joint mobilizations?
- synovial fluid movement
- improve nutrient exchange
What are the neurophysiological effects of joint mobilizations?
- stimulates mechanoreceptors to inhibit pain impulses
- gate control theory
- descending pathway inhibition theory
- peripheral inflammatory modulation
What is the gate control theory?
The gate control theory of pain asserts that non-painful input closes the nerve “gates” to painful input, which prevents pain sensation from traveling to the central nervous system. The gate control theory of pain describes how non-painful sensations can override and reduce painful sensations.