Flashcards in Week 6 McKenzie Method Deck (5):
*Explain the underlying concept of lumbar flexion and its role in disc protrusions in the McKenzie school of thinking
- In a Flexed position the anterior part of adjacent vertebral bodies will approximate, thus narrowing the IVD anteriorly and causing the nucleus to move posteriorly and bulge in that direction
- In Extension the posterior part of adjacent vertebral bodies will approximate, thus narrowing the IVD posteriorly and causing the nucleus to move anteriorly
-This is demonstrated by intrathecal pressures =
Lying = 20%
Standing = 100%
Sitting flexed = 166%
Bending over = 220%
Standing up from chair = 220%
Lifting 20 Kg, neutral = 220%
Lifting 20 kg, flexed = 460%
WilKe HJ et al. (1999) Spine 24, 755
*Provide possible explanations on how the McKenzie system may work
1. Improves the Lx lordosis
(Purepong et al., J Body Mov Ther, 2012)
2. Activate the TrA and MM ?
(Hosseinfar et al., J Phys Ther Sci, 2013)
3. Inducing an immune activation state and increased cytiokines
(Al-Obaidi, Mahmoud, Acta Med Acad. 2014)
4. Reduces fear and disability ?
(Al-Obaidi et al.,PM R. 2011)
= movement or position causing symptoms to move from a distal/lateral position to a more proximal location, closer to the midline of the lumbar spine
- holds strong prognostic value for Pts with LBP as the presence of centralisation has far better Tx outcomes than no change or peripheralisation.