MSK/ Neurology Flashcards
Humerus fracture can injury
Radial nerve
Radial nerve palsy
- wrist drop
- loss of thumb extension
Fall on outstretch hand
Dorsiflexion
Colles fracture
Distal radius
Damage Median nerve w/ dorsal displacement
Posterior hip dislocation
internally rotated, flexed, adducted
Car crash
Sciatric nerve injury risk
Anterior dislocation of hip can injury
Obturator nerve
+ valgus stress test
MCL injury
+ varus stress test
LCL injury
+ Thompson test
Pressure on gastrocnemius leading to absent foot plantar flexion
Achilles tendon rupture
Painless bulge in popliteal space
Popliteal (Baker) cyst rupture
Acute calf pain
Popliteal (Baker) cyst rupture
Unhappy triad of knee injury
ACL
MCL
Medial meniscus
Saturday night palsy affects
Radial nerve
Wrist drop
Radial nerve
Radial nerve innervates
Wrist extension
Dorsal forearm and hand (frist 3 1/2 fingers)
Weak wrist flexion and flat thenar eminence
Median nerve injury
Median nerve does
Forearm pronation, thumb opposition
Palmar surface (first 3 1/2 fingers)
Loss of pronation
Median nerve injury
Elbow dislocation injures
Ulnar nerve
Claw hand
Loss of finger abduction
Loss of sensation over last 2 fingers
Claw hand
Ulnar nerve injury
inability to open the fourth to fifth digits
Dorsal foot and lateral leg
Peroneal nerve
Foot drop
Peroneal nerve
Knee dislocation can injure
Peroneal nerve
Loss of dorsiflexion and eversion
Peroneal nerve
Loss of sensation over lateral thigh
Lateral femoral cutaneous nerve injury
Shortened, internally rotated leg
Posterior hip dislocation
Lengthened, extrenally rotated leg
Anterior hip dislocation
Shortened, externally rotated leg
Hip fracture
Anterior knee pain
Reproduced by extension
Decreased ROM
Patellofemoral pain syndrome
Elbow pain worse with resisted extension
Lateral epicondylitis
Tennis elbow
Elbow pain worse with resisted flexion
Medial epicondylitis
Golfer’s elbow
Median nerve injury
Benediction sign
inability to close first through third digits
Lower back pain
+ passive straight leg raise
+ contralateral (crossed) straight leg raise
Herniated disk
MRI
Surgery if > 6 weeks
Nerve root for foot dorsiflexion
L4
Nerve root for big toe dorsiflexion
foot eversion
L5
Nerve root for plantarflexion
S1
Tibial fracture risk for
Compartment syndrome
Septic arthritis
Organism
Tx
Staphylococcus
Streptococcus
Gram (-) rods
Ceftriaxone and vancomycin
Osteophytes
Subchondral sclerosis
Subchondral bone cysts
Osteoarthritis
Child with gout and inexplicable injuries
Lesch-Nyhan syndrome
Hypoxanthine-guanine phosphoribosyltransferase deficiency
Numbness, pain and paresthesias between third and fourth toes
Clicking sensation
Worse with high heels
Morton Neuroma
Neuropathic degeneration of nerves
Tx: padded shoe inserts
Punched out erosions with overhanging cortical bone
Gout
“rat bite”
Gout Tx
Acute
- High dose NSAID (indomethacin)
- Steroids if NSAID CI due to renal disease
Maintenance
- allopurinol
Gout shape
Needle shaped
Rhomboid crystals
Pseudogout
Due to hemochromatosis or hyperparathyroidism
Chondrocalcinosis on imaging (calcification of articular cartilage)
Associated with meniscal calcification
Wrists and knee affected
Ulnar deviation of fingers with MCP joint hypertrophy
RA
RA tx
1) Methotrexate
2) Symptoms > 6 months add
Hydroxychlorquine
sulfasalazine
or TNF inhibitor
Hydroxychlorquine can cause retinal toxicity
Cant see
Cant pee
Cant climb a tree
Reactive arthritis
HLA-DR4
RA
HLA-B27
Ankylosing spondylitis
Young man
Arthritis
Uveitis
Conjunctivitis
Urethritis
Reactive arthritis
Previous infection with Campylobacter, Shigella, Salmonella, Chlamydia, or Ureaplasma
Sausage shaped digits
Psoriatic arthritis
Anti-Jo
Polymyositis
Dermatomyositis
Papular rash with scales on dorsa of the hands over bony prominences
Gottron papules
Dermatomyositis
Symmetric, progressive proximal muscle weakness and pain
Difficulty getting up from seat
Labs(3)
Polymyositis
Elevated creatine kinase, aldolase, AST
ANA
SLE
Anti-CCP
RA
Anti-dsDNA
SLE
Antihistone
Drug induced SLE
Anti-Ro/ Anti-a
Sjogren syndrome
Anti-Sm
SLE
Anti-smooth muscle
Autoimmune hepatitis
c-ANCA
Vasculitis, especially granulomatosis w/ polyangiitis (Wegener)
p-ANCA
Microscopic polyangiitis
CREST syndrome
Anti-centromere
Calcinosis Raynaud phenomenon Esophageal dysmotility Sclerodactyly Telangiectasis
Tx Raynaud
CCB
- Nifedipine
- Amlodipine
Tx Giant cell arthritis
High dose prednisone to prevent ocular involvement
Asian
Aortic claudication
Differential BP in both upper extremtities
Absence of palpable pulses
ESR and CRP elevated
Takayasu arteritis
Middle eastern man
Recurrent painful oral ulcers
uveitis
Genital ulcers
Behcet syndrome
Thormbosis is common cause of morbidity
Aching and stiffness in shoulders, hips and neck
No weakness
Polymyalgia rheumatica
Elevated ESR
Elevated C-reactive protein
Colles fracture indicates
Osteoporosis
Causes of osteoporosis
Hyperthyroidism
Hyperparathyroidism
Hypercortisolism
Hypogonadism
Calcium/ Vit D deficiencies
Malabsorption
- Celiac
- Crohns
CKD
MM
RA
Boy 6 y.o
Insidious hip pain
Limp
Limited internal rotation and abduction
Legg-Calve Perthes disease
Idiopathic avascular necrosis of femur
Early X ray maybe normal
Later: Femoral head flattening, fragmentation, sclerosis
MRI: Avascular necrotic head
Newborn
Rigid medial and upward deviation of both forefoot and hindfoot
Congenital clubfoot
Associated with Dermatomyositis
Malignancy
Ovarian Lung Pancreatic Stomach Colorectal Non-Hodgkin
Back pain
Step off
Spondylolysis
Disease modifying antirheumatic drugs (5)
MOA
SE
Methotrexate
- Folate antimetabolite
- Hepatotoxicity
- Stomatitis
- Cytopenias
Leflunomide
- Pyrimidine synthesis inhibitor
- Hepatotoxicity
- Cytopenias
Hydroxychloroquine
- TNF & IL-1 suppressor
- Retinopathy
Sulfasalazine
- TNF & IL-1 suppressor
- Hepatotoxicity
- Stomatitis
- Hemolytic anemia
TNF inhibitors
- Adalimumab
- Certolizumab
- Etanercept
- Golimumab
- Infliximab
- Infection
- Demyelination
- CHF
- Malignancy
2 y.o
Walks on toes
Elevated Creatine kinase
Associated with
Tx
Duchenne muscular dystrophy
Dilated cardiomyopathy
Scoliosis
Tx: Glucocorticoids
Slit lamp examination
To screen for uveitis
ANA
Juvenile idiopathic arthritis
Weakness
Paresthesias
Loss of fine motor control
Hyperreflexia
Upgoing plantar reflex
Cervical spondylotic myelopathy
Knee pain
Worse at end of day
Bony enlargement
Small effusion
No crystals
Tx
Osteoarthritis
Exercise
WL
Topical or oral NSAIDs
- Duloxetine
- Tramadol
- Capsaicin
- Diclofenac
Febuxostat
Xanthine oxidase inhibitor used in management of chronic gout
Cyclophosphamide SE
Alkylating agent used as immunnosuppressant in SLE
Hemorrhagic cystitis
Bladder carcinoma
Sterility
Myelosuppression
Low back pain
Muscle pain in arms and shoulders
Normal muscle strength
C reactive protein is 3 (<8 normal)
Fibromyalgia
Boy
Proximal femur
Pain at night
Small round lucency on xray
Osteoid osteoma
Responsive to NSAIDs
Dull hip pain
Referred knee pain
Altered gait
Limited internal rotation
Slipped capital femoral epiphysis
Anterolateral and superior displacement of proximal femur
Can be both hips
16 y.o
Left knee pain
Improved w/ NSAIDs
Limp
Nontender pustules on palm w/ erythematous rim
Increased leukocyte count
Negative culture
Disseminated gonococcal infection
Cephalosporin IV and oral azithromycin
Associated with giant cell arteritis and polymyalgia rheumatica
Aortic aneurysm
Stiffness
ESR > 40
> 50 y.o
Tx?
Polymyalgia rheumatica
Glucocorticoids
Physiologic genu valgum
Knock knee
Age 2-5
RA at risk for
Atherosclerosis
Vasculitis
Osteoporosis
Anemia
Raynaud phenomen
Rash over malar area and nasal bridge
Small ulcers at finger tips
Swollen and tender hand and wrist joints
+ ANA
+ Anti-U1 ribonucleoprotein
Elevated ESR
Mixed Connective tissue disease
SLE
Systemic sclerosis and polymyositis
Supracondylar fracture with posterior displacement risk for damage to
Brachial artery
Median nerve
Ulnar nerve injury due to
Supracondylar fracture that has anterior displacement of distal humerus
Movement of ipsilateral limbs and body
Lateral corticospinal
Fine touch, vibration, conscious proprioception
Dorsal column medial lemniscus
Pain and temperature
Spinothalamic
CL loss of pain and temperature
Isplateral hemiparesis and diminished dorsal column sensation (diminished proprioception,vibratory sensation, and light touch)
Brown Sequard hemisection
Combined UMN and LMN deficits with no sensory or oculomotor deficits
Fasciculations with eventual atrophy and weakness of hands
Amyotrophic lateral sclerosis
Car accident
Weakness in upper extremities more than lower
Central cord syndrome
Hyperextension
Tertiary syphilis does what
Degeneration (demyelination) of dorsal columns and roots —>
Impaired sensation and proprioception, progressive sensory ataxia (inability to sense or feel the legs) —> poor coordination
Absence of tendon reflex
+ Romberg sign
Cape like bilateral loss of pain and temp in upper extremities
Syringomyelia
CSF filled cavity within spinal cord, expands and damages white commissure of spinothalamic tract
Demyelination of dorsal columns, lateral corticospinal tracts, and spinocerebellar tracts
Ataxic gait
Paresthesia
Impaired position and vibration sense
Vit B12 deficiency
Controls knee extension and hip flexion
Femoral nerve
Innervates anterior thigh muscles
IVC filter placement can compress
Lateral femoral cutaneous nerve
Sensation to lateral thigh
Cold or minor trauma causes recurrent pain to face
Trigeminal neuralgia
CN V
Demyelination of the nerve axon
Tx: Carbamazepine
[If bilateral suspect MS]
Stroke
Speaks in two to three word choppy sentences but can follow commands. Can not repeat what you said
Lesion where?
Broca’s area
Posterior frontal cortex on dominant side of brain
Homonymous hemianopsia
Can only see only one side right or left
CL paresis and sensory loss in the face and arm
Homonymous hemianopsia toward the side of the lesion
Middle cerebral artery
CL paresis and sensory loss in the leg
Cognitive or personality changes
Urinary incontinence
Anterior cerebral artery
Hemonymous hemianopsia
Ipslateral sensory loss in face, CN IX, and CN X
CL sensory loss in limbs
Limb ataxia
Posterior cerebral artery
Loss of pain and temperature sensation on ipslateral face and contralateral body
Vertigo
Nystagmus
PICA/ vertebral (Wallenberg syndrome)
Sudden headache
Neck pain
Horner syndrome
Carotid artery dissection
Conditions associated with berry aneurysms
Make Subarachnoid hemorrhage more likely
MAKE an SAH
Marfan syndrome
Aortic coarctation
Kidney disease (autosomal dominant, polycystic)
Ehlers-Danlos syndrome
Sickle Cell anemia; Smoking tobacco
Atherosclerosis
History (familial); Hypertension; Hyperlipidemia
TX SAH
Neurosurgery
Prevent rebleeding
- maintain systolic BP < 150 mm Hg
Prevent vasospasm
- CCB such as nimodipine
Decrease intracranial pressure
- Elevated head of bed
- Instituting hyperventilation in acute setting
Numbness and droop on the right side of face
Difficulty talking
Numbness and weakness in the right arm
2 hrs ago
Left MCA
Blown pupil
Suggests ipsilateral third nerve compression
Xanthochormia
Blood on LP
Seen in two situations
- Herpes simplex virus (HSV) encephalitis
- SAH
Migraine tx
NSAIDs first
Triptans
Prophylaxis
- anticonvulsants (valproate, gabapentin, topiramate
- TCA (emitriptyline
- Beta blockers (propranolol)
- CCBs
Tx Cluster HA
High flow O2 or Sumatriptan injection
Prophylactic: Verapamil (first line)
3 per second spike and wave discharges
Triggered by hyperventilation
Childhood absence epilepsy
Petit mal seizures
What maybe elevated after a seizure
Prolactin levels
First line tx for seizure in children
Phenobarbital
Prolonged seizures
- duration
- name
- tx
- risk
> 5 minutes
Or two or more seizures without return of consciousness in 30 minutes
Status Epilepticus
Maintain airway
Administer thiamine followed by glucose
0-5 min: Give IV benzodiazepine (lorazepam or diazepam)
5-10 min: Give Second IV benzo
20 min: Fosphenytoin, valproate sodium, phenobarbital, levetiraetam or continuous infusion of midazolam
Risk: cortical laminar necrosis
Tx Benign paroxysmal positional vertigo
Epley maneuver
Vertigo
Vomiting for 1 week
Viral infxn 1 week ago
Acute vestibular neuritis
Acute onset severe vertigo
Head motion intolerance
Gait unsteadiness
N/V
Nystagmus
Labyrinthitis or Vestibular neuritis
Labyrinthitis also have tinnitus, ear fullness or hearing loss
Tx: Corticosteriods and antivertigo agents (meclizine)
Subsides spontaneously within weeks to months
Recurrent vertigo
Recurrent Unilateral auditory symptoms, tinnitus, and ear fullness
Episodes last minutes to hours
Meniere disease
Increased volume of endolymph
[Rule out cerebellopontine angle tumor w/ MRI]
Acute: Meclizine or benzodiazepines to control spinning
Chronic: dietary changes to limit salt to avoid fluid retention
Vasovagal syncope triggered by
Prolonged standing
Emotional distress
Painful stimuli
Syncope work up
Unless obviously vasovagal in young patient with no heart conditions
Place on telemetry or Holter monitoring to evaluate for arrhythmia
Rule out MI w/ ECG and cardiac enzymes
EEG for seizures
Proximal muscle weakness
Double vision
Dysarthria
Dysphagia
Symptoms worsen as day goes on
Myasthenia gravis
Antibodies that bind to POST synaptic acetylcholine receptors at NMJ
Tx: Airway management
IVIG or plasmapheresis
IV steroids
Pyridiostigmine (AChE inhibitors)
Myasthenia gravis complications
Respiratory compromise
Aspiration
Myasthenia gravis test
Tx
Acetylcholine receptor antibody
Edrophonium (tension test) is an anticholinesterase inhibitor used as diagnostic tool
Tx: Anticholinesterase inhibitors (pyridostigmine) - symptoms relief
Prednisone, immunosuppressants (azathioprine, cyclosporine, mycophenolate) IVIG used for treatment
Resection of thymoma can be curative
Avoid certain antibiotics
- Aminoglycosides
- Fluroquinolones
- Beta blockers
Ice Pack over eyelids improve symptoms
Myasthenia gravis
Weakness of proximal muscles along with depressed or absent tendon reflexes
Weakness improves with activity
Lambert Eaton Myasthenic syndrome
Paraneoplastic autoimmune disorder
Antibodies target PREsynaptic voltage gated calcium channels
Small cell lung cancer
Tx: Small cell lung cancer tx
3,4 diaminopyridine or guanidine
Anterior mediastinal mass
Weakness
Thymoma
Ascending paralysis
CSF protein level > 55 mg/dL
Guillain-Barre syndrome
Normal WBC
Normal RBC
Normal Glucose
UMN
Pyramidal (arm extensors and leg flexor weakness)
Spastic (increased)
Increased hyperreflexia
Babinski reflex
Pronator drift
LMN
Flaccid (decreased)
Decreased DTR (hyporeflexia)
Atrophy
Fasciculations
Delay progression of ALS
Riluzole
Decreases glutamate
Neurofibrillary tangles
Amyloid deposition
Alzheimer disease
Diffuse atrophy with enlarged ventricles
Senile plaques
Alzheimer disease
Especially temporal and parietal lobes
Round intraneuronal inclusions on imaging in frontal lobes
Frontotemporal dementia (pick disease)
Round intraneuronal inclusions= pick bodies
Frontotemporal atrophy
Ventricular enlargement
Normal pressure hydrocephalus