19 results
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Bone/Joint Causes ... Hematoma Venous Causes ... Edema Arterial Causes ... Paralysis 4) Paresthesia ... extremity #msk #physicalexam
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Equina Syndrome Causes ... paralysis) in both legs ... loss of normal leg ... Incontinence • Saddle Anesthesia ... Syndrome #MSK #pathophysiology
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
saddle (perineal) anesthesia ... and bilateral leg ... Commonly caused ... Myotomes #diagnosis #neurology ... #physicalexam
Nephron Pathophysiology - Diuretic Sites of Action
Diuretics
1) Acetazolamide/canagliflozin
2) Osmotic agents (mannitol, urearetics)
3) Loop agents (eg, furosemide)
4)
Nephron Pathophysiology ... ) Loop agents (eg ... Adenosine #Nephron #Pathophysiology ... Sites #Action #nephrology ... #pharmacology
Dropped Foot Gait - Paralysis of Dorsal Flexion of the Foot.
When trying to walk the tip
peroneal nerve, which causes ... flaccidity of the leg ... by raising the leg ... DroppedFoot #Gait #Neurology ... #PhysicalExam #
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Erb's Palsy is caused ... Dislocation - May cause ... regimental badge" anesthesia ... Myotomes #diagnosis #neurology ... sensory #motor #arm #physicalexam
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
reflex. saddle anesthesia ... . leg weakness and ... Syndromes #diagnosis #pathophysiology ... #orthopedics #neurology
Pisa Syndrome (pleurothotonus) on Physical Exam
A tonic flexion of the trunk of the body to one
Caused commonly ... neurodegenerative disorders (eg ... Pathophysiology: ... pleurothotonus #PhysicalExam ... #clinical #neurology
Neuromyelitis Optica (NMO) - Clinical Manifestations
 • Optic neuritis: Reduced visual acuity, ranging from mild to
involvement: Intractable nausea ... hiccups (mainly AQP4-lgG ... syndromes (AQP4-lgG ... deficits ranging from paresthesia ... Manifestations #diagnosis #neurology
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
result in permanent neurologic ... Impotence - Saddle anesthesia ... multiradicular pain - Leg ... loss - Saddle anesthesia ... differential #diagnosis #neurology