Joint Mobs Flashcards
What type of CT is joint capsule made of?
Dense fibrous CT
T/F Joint capsule thickness is equal all the way around
False, varies in thickness according to stresses placed on it
What are the 3 roles of a joint capsule?
- Seals joint space
- Provides passive stability by limiting movements
- Provides active stability via its proprioceptive nerve endings
What impact will a tight joint capsule have on motion?
cause early and excessive accessory motion in the opposite direction of the tightness
What does injury to the joint capsule often lead to?
Pain
Loss of motion
Excessive motion
Why do we test at the open pack position?
- Maximal incongruency
- Intracapsular space is as large as possible
- Maximal amount of joint play available
Why do we not test in the closed pack position?
- Joint positions where joint is most congruent
- Surrounding tissue (capsules and ligaments) under maximal tension
- Maximal stability of the joint
What are you trying to determine with the joint mobility assessment? (3 things)
- Gross (quantity of movement) - hypomobile, normal, hypermobile
- End-feel (quality of movement) - firm, hard, empty
- Provocation
What is the difference between hypomobility and hypermobility?
- Hypomobile - Motion stops short of anatomical limit instead stops at pathological point of limitation (Pain, spasm, adhesions, inflammation)
- Hypermobile - Joint moves beyond its anatomical limit because of laxity of surrounding structures
What are indications for joint mobilizations?
- Break pain cycle
- Increase joint extensibility
- Increase extensibility of tendons, muscles, fascia
- Increase joint ROM
- Promote muscle relaxation
- Improve muscle performance
What are the proposed biomechanical effects of joint mobilizations?
o Motion improvement
o Positional improvement
o Increase joint capsule extensibility
What are the proposed nutritional effects of joint mobilizations?
o Synovial fluid movement
o Improve nutrient exchange
Describe neurophysiological effect of mechanoreceptor stimulation of joint mobilizations
o Stimulates mechanoreceptors to inhibit pain impulses – distraction from other pain (hit elbow -> rub the area to decrease pain)
Describe neurophysiological effect of gate control theory of joint mobilizations
o Gate control theory (joint capsule nerves)– chronic pain unmyelinated C fibers, stimulate large myelinated fibers which stops slow pain from reaching brain
Describe neurophysiological effect of Descending pathway inhibition theory of joint mobilizations
o Descending pathway inhibition theory (brain stimulation) – grade 5 mobilizations, stimulating periaqueductal gray area, release serotonin, bind to opioid receptors and block incoming pain signals
Describe neurophysiological effect of peripheral inflammatory modulation of joint mobilizations
o Peripheral inflammatory modulation – inflammation joint capsule, stimulate and flush out inflammation
Choose absolute or relative contraindication:
Malignancy in area of treatment
Absolute
Choose absolute or relative contraindication:
Arthroplasty
Relative
Choose absolute or relative contraindication:
Cervical arterial dysfunction
absolute
Choose absolute or relative contraindication:
Spondylolisthesis
relative
Choose absolute or relative contraindication:
Hypermobility
relative
Choose absolute or relative contraindication:
Infectious arthritis
absolute