Cervical Spine Disc Hern Flashcards
3 unique features of cervical spine IVDs
- smaller size ( smaller injury can have larger effects)
- Bear less weight
- Share load equally w cervical facets
where is the extracellular matrix found and what does it do
found in inner nucleus palposus, helps balance forces under compression (type 2 collogen)
What supplys the outer iv disk
Sinuvertebral nerve
What is the end plates blood suppy
end plate vascular supply is primarily indirect (nutrients delievered by diffusion)
What structures need a balance or else a chain can be set off
Healthy nucleus palposus, Annulus integrety and vertebral end plate
clinical features of DDD
- pathological changes in vertebral end plates
- Abnormal diffusion of essential molecules
- Cell death + degeneration
- degraded proteoglycans/gags
- weak/ stiff disks
Two primary MOI for CDH
- rot
2. compression `
m/c age of disk herns
25-45
most common level of CDH
90% at C5/6
Common risk factors of CDH
- male
- heavy lifting (frequently)
- Smoking
- Occupation (vibratory equipment)
- Driving
- Golf
CDH common symptoms
- Arm pain (MC)
- neck pain
- cervicobrachial neuralgia
- cervical radiculopathy
- weakness of shoulder
- headache
Aggrevating factors of CDH
- neck motion
- dijerines triad
- sudden neck mvmt
- poor posture
Signs of CDH
- decreased ROM
- jt fixations
- Neuro findings
- Muscle atrophy
- Paraspinal spasm
CDH ortho tests
spurlings arm squeeze axial distraction abducted arm ULTT valsalva neuro
what percentage of pt would not have dermatomal pain
70%
most described at aching or sharp
