14 results
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
- Radial Nerve Palsy ... of the radial nerve ... #clinical #video ... #orthopedics #msk ... #sports #neurology
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
, C8 Wrist: • ... nerve in the radial ... Carpal Tunnel Syndrome ... Myotomes #diagnosis #neurology ... #sensory #motor
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
variable gross wrist ... fracture, median nerve ... injury, acute carpal ... tunnel syndrome ... #Orthopedics #MSK
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
Cord Injury by Nerve ... Levels Spinal Root Sensory ... Respiration None C5 Radial ... C6 Dorsal Thumb Wrist ... #diagnosis #Neurology
Guillain–Barré syndrome (GBS)
(aka: Landry–Guillain–Barré–Strohl syndrome:
	Most common cause of acute flaccid paralysis
	Rapidly progressive ascending paralysis & areflexia
	Autonomic
Guillain–Barré syndrome ... Landry–Guillain–Barré–Strohl syndrome ... Differential diagnosis ... Multiple Sclerosis: CNS ... nerve dysfunction
Ramsay Hunt Syndrome (Herpes zoster oticus) wit Facial Nerve Palsy
Triad: 
 - Ipsilateral facial paralysis
 -
Ramsay Hunt Syndrome ... Nerve Palsy Triad ... vesicles in auditory canal ... #neurology #clinical ... #CN7 #CNVII
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Triceps - C6, C7 ... • Cauda Equina Syndrome ... damage to peroneal nerve ... fracture or prolonged compression ... Myotomes #diagnosis #neurology
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
Weakness - Differential ... pulmonary etc) • CNS ... compression • ... signs - Lack of sensory ... #Diagnosis #neurology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
due to severe compression ... of nerve roots ... and/or genital sensory ... #differential # ... diagnosis #causes #neurology
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
Hearing Loss - Differential ... include a: • Neurologic ... (CN 8) ... II ○ Susac’s syndrome ... Noise trauma ○ MS