13 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
nerve in the radial ... Carpal Tunnel Syndrome ... regimental badge" anesthesia ... Dermatomes #Myotomes #diagnosis ... sensory #motor #arm #physicalexam
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
Cauda Equina Syndrome ... compression of nerve ... • S - Saddle anesthesia ... - Emergency Causes ... #diagnosis #causes
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Conditions: • Cauda Equina ... Syndrome - Low ... saddle (perineal) anesthesia ... Commonly caused ... damage to peroneal nerve
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Cauda Equina Syndrome ... Causes: • Large ... Incontinence • Saddle Anesthesia ... damage to sacral nerves ... pathophysiology #diagnosis
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Epidemiology: • 1-2 cases ... Nerve Palsies / ... Guillain-Barre Diagnosis ... roots and cauda equina ... #diagnosis #management
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
- Differential Diagnosis ... Spinal stenosis/nerve ... Paralysis 4) Paresthesia ... #differential #diagnosis ... extremity #msk #physicalexam
Horner's Syndrome on Physical Exam

A 75yoF was referred in for facial swelling and eyelid changes 1
referred in for facial ... consistent with a diagnosis ... experience, the cause ... #clinical #video ... ophthalmology #physicalexam
Guillain-Barré Syndrome (GBS)
Acute autoimmune demyelinating polyradiculoneuropathy that presents with rapidly progressive flaccid weakness
Epidemiology:
 • Incidence: 1
Guillain-Barré Syndrome ... Incidence: 1 to 2 cases ... all extremity, facial ... roots and cauda equina ... #diagnosis #management
Myasthenia Gravis Overview

Myasthenia Gravis is an autoimmune disorder of the postsynaptic neuromuscular junction.  Ab to
- Brain stem/Cranial ... nerve pathology ... myasthenia Diagnosis ... - Repetitive nerve ... #management #neurology
Orthopedic Emergencies
Compartment Syndrome
 • An increase in compartment pressure to the point where tissue perfusion is
irreversible muscle and nerve ... • Syndrome caused ... • Diagnosis: ... progresses to anaesthesia ... #Emergencies #diagnosis