13 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... axillary nerve ... regimental badge" anesthesia ... #UpperLimb #Extremity ... sensory #motor #arm #physicalexam
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... saddle (perineal) anesthesia ... Commonly caused ... damage to peroneal nerve ... sensory #motor #leg #physicalexam
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Spinal stenosis/nerve ... cyanosis - Cool extremity ... Paralysis 4) Paresthesia ... diagnosis #lower #extremity ... #msk #physicalexam
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
compression of nerve ... • S - Saddle anesthesia ... - Emergency Causes ... or absent lower extremity ... differential #diagnosis #causes
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
Drop - Radial Nerve ... of the radial nerve ... sleeping as in this case ... #Palsy #PhysicalExam ... clinical #video #orthopedics
Froment’s Test for Ulnar Nerve Palsy

This tests for pinch grip weakness caused by ulnar nerve palsy,
Test for Ulnar Nerve ... grip weakness caused ... by ulnar nerve ... video #neurology #physicalexam ... #msk #orthopedics
A 70-year-old woman attends a check-up with a family doctor. As a background, he has a
the peripheral nerve ... initiating trains of nerve ... skeletal muscles to cause ... Trousseau #Sign #PhysicalExam ... #Clinical #Photo
Orthopedic Emergencies
Compartment Syndrome
 • An increase in compartment pressure to the point where tissue perfusion is
Orthopedic Emergencies ... irreversible muscle and nerve ... Syndrome • Syndrome caused ... progresses to anaesthesia ... Hypovolemic Shock #Orthopedics
Hippocratic Shoulder Reduction 
Shoulder reduction is the process of returning the shoulder to its normal position
In cases where closed ... risk of axillary nerve ... Reduction #MSK #PhysicalExam ... #Procedure #Orthopedics
Piriformis Test

The Piriformis test evaluates for pain from sciatic nerve irritation caused by the piriformis muscle.
With
pain from sciatic nerve ... irritation caused ... Piriformis #Test #Hip #PhysicalExam ... #sports #msk #orthopedics