Spine 1 Flashcards
Lower Spine Vertebral Column
Lumbar
5 vertebral bodies (occasionally 6)
L1 to L5
Sacrum
5 segments (usually fused without discs)
Sacrum sits above Coccyx
3-4 segments (fused)
Ligaments of spine
Anterior Longitudinal Ligament
Connects vertebral bodies anteriorly
Posterior Longitudinal Ligament
Connects vertebral bodies posteriorly
Ligamentum Flavum (Yellow Ligament)
Connects lamina posteriorly
Lumbar Discs
general
Purpose
Cushioning between vertebral bodies
Named by Vertebral Body above and below
L4-5 disc is located between the L4 and L5 vertebral bodies
Annulus Fibrosis
Fibrous outer ring of the disc
Nucleous Pulposus
Soft inside of the disc
Spinal Cord
general
Purpose is to transmit information to and from the rest of the body
Begins at craniocervical junction and usually ends between T12-L2
End of spinal cord is called conus medullaris (conus)
At end of the conus there are spinal nerves that go to lower extremities and bowel/bladder
Cauda equina
Notice that the nerve root exits at the top of the foramen
Notice that the disc is below the nerve root
Cervical - nerve roots exiting are named based on vertebral body below foramen
Except C8 which exits in C7-T1 foramen
Thoracic to Sacral- Named for vertebral body above foramen
spine pain
Pathophysiology
neck, back, thoracic
Neck and lumbar pain more common than thoracic
Neck Pain multifactorial
Chronic stress/strains of muscle (most common) due to overuse or repetitive injuries, poor posture, acceleration/deceleration injuries, radicular pain, occupational (prolonged sitting)
Back Pain multifactorial
Lumbar strain (muscular), HNP, SS, other
Thoracic pain less common
Trauma/fracture, tumor, infection, HNP, DJD, spasm
Majority of LBP that presents to PCP is non-specific in etiology, primarily musculoskeletal in origin
Resolves with conservative measures within a few weeks
Less than 1% will have serious systemic condition
Cervical Spine
Spurling Test
to diagnosis cervical HNP or spondylosis
Patient seated, laterally flex head, apply slight pressure downward to increase axial load
+ if numbness, tingling, it pain down ipsilateral side
Cervical Spine
Hoffman Reflex
to test for long tract spinal cord involvement in neck
Pathological reflex, indicates abnormality within the cervical spinal cord or higher (UMN lesion or pyramidal sign) ALS, MS, spinal cord compression
(+) reflex is flexion and adduction of the thumb/index finger after flicking of the middle finger
lumbar
Tests
Gait (barefoot) look at Trendelenburg (pelvis level on one foot = normal hip abductor)
Heel and toe walking (tests L4-5, S1 innervated muscles)
Calf and thigh circumference? atrophy
Special Testing
Seated SLR, supine SLR, slump test
Seated SLR - + test causes patient to lean back
Supine SLR (Lesegue) - + test is radicular pain in leg, not back (HNP or compression) symptoms at 20 degrees or less is suggestive of symptom amplification
Slump test – seated, hands behind back, then slump in relaxed position, chin to chest. Extend leg, dorsiflex fully. Examiner gives slight pressure to back of head. + test is impingement on dura, spinal cord or nerve roots.
back pain
PE
Additional Components of Examination
Should include:
Deep Tendon Reflex Examination of patella, ankle, ? Clonus, ? Babinski
Sensory Examination (light touch/pin prick) to help identify/localize a lesion and determine extent of deficit
Evaluation of gait
Back pain
red flags
Fever, chills, weight loss
History of IV drug abuse
History of malignancy
Progressive weakness
Bowel or bladder dysfunction
Trauma
Increasing pain not controlled by simple analgesia
Saddle anesthesia
Distended/palpable bladder
Paraparesis
Unexplained Neurological deficit
Decreasing pain in the face of increasing deficit
Myelopathy
Injury/ compression of the spinal cord
Radiculopathy
Injury/ compression of the nerve root