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Lumbar Spine
Orthopedics
| Question | Answer |
|---|---|
| Low Back Pain: lifetime prevalence: | 60-80% |
| Leading cause of work related disability = | Low Back Pain |
| Low Back Pain Risk factors | obesity, sedentary, improper biomechanics |
| Low Back Pain: Prognosis | 70% improved in <1 week & asymptomatic in <1 month; 90% asymptomatic in 6-12 wks |
| Vertebral Disk contains: | central nucleus pulposus; peripheral annulus fibrosis |
| Disc degeneration MOA: | degeneration overloads facet joints in verts |
| Disc herniation MOA: | herniation impinges nerve roots |
| Anterior Mxs: | Abdominal & Psoas |
| Posterior Mxs: Superficial: | Erector Spinae, Iliocostal, longissimus & spinalis |
| Posterior Mxs: Middle: | Multifida |
| Posterior Mxs: Deep: | Intersegmental |
| Anterior & posterior muscles alternate to: | control trunk movement |
| Sensory Dermatomes: Lumbar & sacral n. innervate: | lower extremities |
| Pain: Simple sprains & strains = | Nonspecific pain in lower back or one or both buttocks |
| Nerve root pain: | Brief, sharp, shooting, increased by cough, standing, & sitting. |
| Pain: Neoplasm, Infection: | Severe, constant pain persisting at night |
| Pain: Red Flags | > 50 y.o.; kids; Night Pain; Fever, malaise, wt loss; Bladder/ bowel dysfunction; Progressive deficit; Prior ca; Pain > 1 month |
| LBP Hx: | C/C, meds, allergies |
| LBP HPI: | Initiating event, MOA; Site of pain; OLDCARTS; priors, tx, studies |
| LBP: PE: Inspection: | Gait; Posture; Deformity |
| LBP: PE: Palpation: | Bony; Soft Tissue; Pulses |
| LBP: PE: ROM: | Flex, ext, lateral flex, rotation |
| LBP: PE: Other Tests: | SLR; FABER test; Neuro Exam (Sensory, Motor, DTRs) |
| SLR test: | Pain on straight leg flexion reproduces radicular pain |
| Bragards test: | Foot dorsiflexion increases pain |
| Cross SLR test: | Raising contralateral leg causes radicular pain on ipsilateral leg |
| FABER test: | Pain in SI joint |
| LS Spine Exam: inspection: | Symmetry/ Deformity/ Scars |
| LS Spine Exam: motor: L1: | Hip flexion |
| LS Spine Exam: motor: L2: | Hip adductors |
| LS Spine Exam: motor: L3: | Knee extension |
| LS Spine Exam: motor: L4: | Ankle dorsiflexion |
| LS Spine Exam: motor: L5: | Hallicus Longus extension |
| LS Spine Exam: motor: S1: | Hallicus Longus flexion |
| LS Spine Exam: sensory: L1: | Upper outer thigh |
| LS Spine Exam: sensory: L2: | Mid anterior thigh |
| LS Spine Exam: sensory: L3: | Below patella |
| LS Spine Exam: sensory: L4: | Medial ankle |
| LS Spine Exam: sensory: L5: | First web space |
| LS Spine Exam: sensory: S1: | Lateral ankle |
| LS Spine Exam: DTRs: Knee: | L2,3,4 |
| LS Spine Exam: DTRs: Ankle: | S1 |
| Waddell Signs: Tenderness: | Superficial skin tenderness over wide area; Non-localized deep tenderness |
| Waddell Signs: Simulations Tests: | Axial load should not cause LBP |
| Waddell Signs: Distraction Tests: | Flip test |
| Waddell Signs: Regional Disturbances: | Widespread muscle pain in various groups |
| Waddell Signs: Over-reaction: | Pain out of proportion |
| Lumbar Strain: Hx: | MOI; site of pain |
| 70% of LBP = | Lumbar Strain |
| Lumbar Strain: PE: | Tender paravertebral or erector spinae mx; min radiation |
| Lumbar Strain: Rx : | Pain relief, modified activity, exercise, education, & encouragement; Injection with trigger point pain; PRICEMMM |
| 4% of LBP = | HNP |
| HNP: DDx: | Infection, tumor |
| HNP: Evaluation: | MRI / CT |
| HNP: MRI/CT: asymptomatic disc herniation found in: | 17-36% |
| HNP: Lumbar nerve root compression: L1-3 nerve roots: | 5%, pain & numbness above knee |
| HNP: Lumbar nerve root compression: L4 nerve root (L3-4 disk space): | 5%, numbness to shin, weak ankle dorsiflexion |
| HNP: Lumbar nerve root compression: L5 root: | 67%, weakness of EHL & numbness top of foot and 1st web space |
| HNP: Lumbar nerve root compression: S1 root: | 28%, numb lateral foot, weak plantarflexion |
| HNP: Lumbar nerve root compression: Rx: | Conservative, NSAIDs, mx relaxants, Exercise & Education |
| HNP: Lumbar nerve root compression: 10% require: | surgery d/t progressive neurologic deficit |
| Pharma Tx of Acute LBP: Pain relief: | NSAID; Cox-2, Celebrex; Narcotic; Lidoderm patch; Anti-inflammatory; mx relaxants; Steroids |
| Pharma: LBP: Pain: NSAID: | Ibuprofen 800 q6-8h pc; Naprosyn 500 BID |
| Pharma: LBP: Pain: Narcotic: | Percocet 5/325 q4-6h Vicodin 5/500 q 4-6h |
| Pharma: LBP: Pain: Anti-inflammatory: | NSAID, Cox-2 |
| Pharma: LBP: Pain: Muscle relaxants: | Flexeril; Skelaxin; Soma, Robaxin |
| Pharma: LBP: Pain: Steroids: | Hold NSAIDs; Burst of oral steroids; consider trigger point |
| Sacroiliac Dysfn: | Acute or chronic injury to SI joint |
| Sacroiliac Dysfn: Sx: | Pain in SI area, Pos FABER, No discogenic pain |
| Sacroiliac Dysfn: Lab: | consider CBC, ESR, ANA, RF, HLA-B27 |
| Sacroiliac Dysfn: RX: | Ice, Stretch, NSAIDs, injection |
| Cauda Equina Syn: affects: | L2-L4 nerve roots |
| Cauda Equina Syn: Mechm: | Compression of nerve roots causes paralysis without spasticity (LMN) |
| Cauda Equina Syn: Etiology: | Central disc herniation, abscess, hematoma |
| Cauda Equina Syn: Sx: | Loss of bladder/ bowel control, bilateral LE weakness & sensory deficits |
| Cauda Equina Syn: Rx: | Emergent Surgical Decompression |
| Lumbar Spinal Stenosis = | Progressive degeneration of disc & facet joints; Narrowing of canal; Compression of n. roots |
| Lumbar Spinal Stenosis: Signs: | Neurogenic claudication, radicular sx; Pain increased w/ sitting or spinal ext; Pain relieved w/ flexion, pt walks stooped-over |
| Lumbar Spinal Stenosis PE: | Sensory changes, dec DTR, mild weakness |
| Lumbar Spinal Stenosis: Course: | Deficits may progress |
| Lumbar Spinal Stenosis: Xray: | may show narrowing of the IVD, old burst fx; MRI demonstrates stenosis |
| Lumbar Spinal Stenosis: Rx: | PT, core strength, NSAIDs, dec impact & bending, surgical decompression for progressive dz |
| Spondylolysis = | Pars interarticularis stress fx |
| Spondylolysis: Prevalence | 5%-8 % of population; Dancers, gymnasts, lifters |
| Spondylolysis: occur most often at: | L5 |
| Spondylolysis: S/S | Pain adjacent to midline, inc with extension & rotation |
| Spondylolysis: xray | Scotty dog collar only on oblique xray |
| Spondylolysis: Rx: | modify activity, core exercise, gradual RTP |
| Spondylolisthesis = | Vertebral sliding (Dancers, gymnasts) |
| Spondylolisthesis: PE: | Step-off, may be asx. |
| Spondylolisthesis: Grading | Grade I – V (25 to >100%); Isthmic, degenerative |
| Spondylolisthesis: xray | Lateral film shows slip |
| Spondylolisthesis: Rx: Asx: | no restriction, core exercise |
| Spondylolisthesis: Rx: Symptomatic: | no restriction, core exercise, consider brace; Surgery for progressing slips or deficit |
| Piriformis Syndrome = | Irritation of sciatic n. (L4,5, S1,2,3) beneath piriformis mx |
| Piriformis Syndrome: etiology | Trauma, spasm, anatomic |
| Piriformis Syndrome: PE: | FROM of lumbar spine; Sciatic notch tenderness |
| Piriformis Syndrome: DDx: | HNP |
| Piriformis Syndrome: RX: | Rest, ice, meds, stretch, injection |
| Lateral spine curvature = | Scoliosis |
| Scoliosis: < 10 degree: tx | observe |
| Scoliosis: < 20 defree: tx | conservative Rx |
| Scoliosis: Occurs where: | T or L spine |
| Scoliosis: most common cause: | Idiopathic |
| Scoliosis: prevalence | Girls 7x > than males |
| Scoliosis: Adults: | secondary dz & pain |
| Scoliosis: Surgical Rx: | Fusion & Rod |
| Scoliosis: Exam: | Forward flexion; Look for spine, scapula or hemi-thorax asymmetry |
| Scoliosis: Xray Cobb angle: | Measure angle from tilted vertebrae above & below apex of curve |
| 50% of pts with solid tumors have: | mets to spine |
| Tumor: Highest prevalence: | BrCa, lung, prostate, colon, thyroid, kidney ca (hematogenous spread) |
| Tumor: Sx: | Night pain, n. root compression |
| 10% of spinal bone tumors are: | primary |
| Spinal bone tumors: in children, 20% are: | malignant |
| Spinal bone tumors: Primary malignant: | Osteosarcoma, Ewing Sarcoma, Chondrosarcoma |
| Degenerative joint dz = | loss of articular cartilage & growth of new bone around facet joint |
| Facet Syndrome = | n. root compression by loss of disc height & facet hypertrophy |
| Osteoarthritis: X-ray: | joint narrowing, sclerosis, osteophytes |
| Osteoarthritis: Rx: | Wt reduction, pt education; Pain relief |
| Ankylosing Spondylitis: involves: | SI joint, and spine |
| Seronegative spondyloarthropathy: | HLA-B27 usually positive |
| Ankylosing Spondylitis: Sx: | Chronic low back pain in young adults; morning stiffness, improves with movement; 20% peripheral joint sx (Enthesopathies common; 25% with anterior uveitis) |
| Ankylosing Spondylitis: PE: | Schobers test (normal is 5 - 7 cm movement) |
| Ankylosing Spondylitis: X-ray: | Erosion & sclerosis on plain films |
| Ankylosing Spondylitis: Rx: | PT, NSAIDs, Sulfasalazine, Infliximab |
| Testing Spinal Mobility: | Schobers Test |
| Schobers Test: | 2 midline marks 10 cm apart starting at PSIS (dimple of Venus); remeasure w/ lumbar spine at maximal flexion |
| Schobers Test: Less than 5 cm difference suggests: | pathology |
| Ankylosing Spondylitis = | Calcification btw vertebral bodies at edge of discs; gives appearance of bamboo stalk; sclerosis of SI joint |
| Osteoporosis = | Reduction in bone mass (Low peak mass; inc bone loss; hyperparathyroid, chronic steroids) |
| Visceral Causes: prevalence in LBP | 2% of LBP |
| LBP: Visceral Causes: Referred pain from: | GB; Pancreas; AAA; Endometriosis; Chronic PID; Prostate CA; Renal stones or pyelonephritis |
| LBP: Need for imaging | Rarely needed in nontraumatic, recent onset ALBP |
| LBP: Imaging: when | Plain films approp: trauma/ longstanding sx ; if conservative Rx fails |
| LBP: Imaging: Order: | AP / Lateral; Obliques; Flex & Ext |
| LBP: MRI study of choice for: | discopathy |
| LBP: Tc 99m bone scan for: | primary tumors, metastatic disease, or infection |
| Reading Spine Films: looking for: | Fx; Disc space changes; Arthritic changes; Listhesis; Tumors |
| Spine Film: Frontal View: each vert resembles: | an owls head, straight on; each eye = pedicle; beak = spinous process |
| Spine Films/ Frontal: Horizontal displacement may = | fx or dislocation |
| Spine Films/ Frontal: Decreased intervertebral space = | Fx, DDD, HNP |
| Spine Films/ Frontal: Vert body (owl head) for: | Missing eye (destrn); pedicle |
| Spine Films/ Frontal: Vert body: Crack in owls eye: in = | Chance fx (seat belt fx) |
| Spine Films/ Frontal: Vert body: Inc space btw owls eyes: in = | Burst fx |
| Spine Films/ Frontal: Vert body: Dec head height: in = | Burst fx |
| Spine Films/ Frontal: Vert body: Open bea, or inc distance btw 2 beaks: in = | Chance fx or spinous process fx |
| Spine Films: Oblique: each vert = Scotty Dog: look for: | a collar |
| Spine Films: Oblique: Scotty Dog: front & hind legs = | inf intervertebral articular processes |
| Spine Films: Oblique: Scotty Dog: Ears & tail = | superior intervertebral articular processes |
| Spine Films: Oblique: Scotty Dog: Dog body = | the lamina |
| Spine Films: Oblique: Scotty Dog: dogs eye = | a pedicle |
| Spine Films: Oblique: Scotty Dog: nose = | a transverse process |
| Spine Films: Oblique: Scotty Dog: Neck = | the pars interarticularis |
| Spine Films: Oblique: Scotty Dog: If the tail is to your right, you are looking at: | right lamina (& vice versa for left) |
| Spine Film: Lateral View: Vert alignment: displacement seen in: | fx & listhesis. |
| Spine Film: Lateral View: decreased intervert disc space in: | fx, DDD, & HNP |
| Spine Film: Lateral View: Cf ant & post vert body cortex for: | changes in ht cf to the others (Burst or wedge fx) |
| Spine Film: Lateral View: fx lines in spinous processes = | black (lucent) fx lines |
| Spine films: stable fxs = | Wedge fx; spinous process fx |
| Spine films: unstable fxs = | Burst fx; Chance fx |
| Chance fx: Unstable: best seen on what film? | lateral |
| Chance fx: MOI | MVA: lap belt immobilizes pelvis & thorax is forcefully flexed forward |
| Chance fx: Seen on AP = | crack thru eyes (pedicles), or open beak (crack through spinous process) |
| Burst fx: Unstable = | Collapse of vert body |
| Burst fx: Unstable: seen on lateral view as: | smaller vertebral body |
| Burst fx: Unstable: on AP = | inc distance btw pedicles |
| Burst fx: MOI: | fall from a ht, landing on feet or buttocks |
| Burst fx: Fragments: | may extend into spinal canal causing neuro S/S |
| Wedge fx: Stable = | Collapse of ant vert body w/ an intact posterior wall |
| Wedge fx: Stable: result of: | hyperflexion injury and / or osteoporosis. |
| Spinous Process fx: Stable: on lateral view = | Lucency thru spinous process |
| Most common Spinous Process fx found in: | C-spine (Clay Shovelers fx) |
| Spinous Process fx: MOI: | sudden forceful ligamentous traction on spinous process, or a direct blow to the process |
| Coccyx fx: MOI | Fall on coccyx |
| Coccyx fx: PE: Do: | rectal to R/O hematoma, displaced fx |
| Coccyx fx: mild trauma: xray = | Radiographs not indicated |
| Lower Back Rehab to: | Ctrl pain; Reduce inflame; relative rest; Pain free ROM; correct inflexibilities & strengthen core mx; aerobic conditioning; wt reductn; correction of biomechanics; prevent recurrence |
| LBP Prevention | Regular strength/ flexibility exer; correct lifting & moving tech; posture standing/ sitting; proper body wt |
| LBP tests | xrays if pain >4 wks; MRI/CT sens > xray for infxn, ca, hern disk, stenosis; CBC, ua, Ca, PO4, ESR, alk phos |
| LBP: anemia, ESR | anemia w/MM, high ESR in malig, infxn, CTD |
| most common hip problems | Trochanteric & gluteus medius bursitis, OA, femur fx |
| Lateral hip pain that is aggravated by direct pressure = | trochanteric bursitis |
| Meralgia paresthetica affects the _____ nerve | lateral femoral cutaneous nerve |
| LBP: most common site of disk herniation | L5-S1 (also L4-L5) |
| Osteoporosis: prevalence in LBP | Causes 4% of LBP |
| Disc degeneration MOA: | degeneration overloads facet joints in verts |
| Sciatic nerve neurapraxia: | with L-S spine, pelvic, hip Fx, or HNP |
| Disc herniation MOA: | herniation impinges nerve roots |
| Coccyx fx: PE: Do: | rectal to R/O hematoma, displaced fx |
| Coccyx fx: mild trauma: xray = | Radiographs not indicated |
| Bragard test: | Foot dorsiflexion increases pain |
| Cross SLR test: | Raising contralateral leg causes radicular pain on ipsilateral leg |
| Waddell Signs = | Non-organic Physical Signs in LBP; TTP, axial load, flip test, Pain out of proportion |
| Lumbar Strain: PE: | Tender paravertebral or erector spinae mx; min radiation |
| HNP = | Herniated Nucleus Pulposus |
| HNP: most common = | L4-5, L5-S1 |
| HNP: MOI: | Flexion & rotation; Tears in annulus |
| HNP: Sx: | Sciatica (radiating pain, numbness & weakness to LE) |
| HNP: Signs: | Pos SLR, Flip sign, Pain worse on back ext |
| Pharma Tx of Acute LBP: Pain relief: | NSAID; Cox-2, Celebrex; Narcotic; Lidoderm patch; Anti-inflammatory; mx relaxants; Steroids |
| Female exam, asymmetric posterior chest wall or uneven scapula height with forward bending | Scoliosis (> 25 degree Cobb angle = surgery) |
| Subluxation of vertebral body = | Spondylolisthesis |