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Peripheral Nerve Entraptments

 
Lateral Antebrachial Cutaneous Nerve

 
EMG Findings 01
In the needle EMG study shown in the video above, the finding of motor unit action potentials that are large, long, and polyphasic would be most consistent with which of the following
 
Sensory distribution of the median nerve
Which of the following images best illustrates the sensory distribution of the median nerve
 
Pain in the forearm 05
A 25 year-old woman presents complaining of pain and tingling in her right arm. The pain is in her wrist, forearm, and elbow. The tingling is in her thumb and index finger. She says it's been going on for about 4 weeks, and getting worse. It frequently wakes her up at night...
 
Pain in the forearm 03
A 25 year-old woman presents complaining of pain and tingling in her right arm. The pain is in her wrist, forearm, and elbow. The tingling is in her thumb and index finger. She says it's been going on for about 4 weeks, and getting worse. It frequently wakes her up at night...
 
Upper extremity muscle function and innervation 04
During a needle EMG of the upper extremity, you notice a large number of fibrillations in the pronator teres muscle while the patient is at rest. From this, you deduce that the patient has a lesion. Of the following options, which lesion is most compatible with the EMG findings
 
Upper extremity muscle function and innervation 04
During a needle EMG of the upper extremity, you notice a large number of fibrillations in the pronator teres muscle while the patient is at rest. From this, you deduce that the patient has a lesion. Of the following options, which lesion is most compatible with the EMG findings
 
Nerves arising from the brachial plexus and the muscles they innervate 01
The deltoid is innervated by which of the following nerves
 
Upper extremity muscle function and innervation 03
During a needle EMG of the upper extremity, you notice a large number of fibrillations in the first dorsal interosseous muscle while the patient is at rest. From this, you deduce that the patient has a lesion. Of the following options, which lesion is most compatible with the EMG findings
 
Upper extremity muscle function and innervation 03
During a needle EMG of the upper extremity, you notice a large number of fibrillations in the first dorsal interosseous muscle while the patient is at rest. From this, you deduce that the patient has a lesion. Of the following options, which lesion is most compatible with the EMG findings
 
Upper extremity muscle function and innervation 02
During a needle EMG, you notice a large number of fibrillations in the abductor pollicis brevis muscle while the patient is at rest. From this, you deduce that the patient has a lesion. Of the following options, which lesion is most compatible with the EMG findings
 
Upper extremity muscle function and innervation 02
During a needle EMG, you notice a large number of fibrillations in the abductor pollicis brevis muscle while the patient is at rest. From this, you deduce that the patient has a lesion. Of the following options, which lesion is most compatible with the EMG findings
 
Upper extremity muscle function and innervation 01
Of the following choices, which muscle receives the most proximal innervation from the median nerve
 
Upper extremity muscle function and innervation 01
Of the following choices, which muscle receives the most proximal innervation from the median nerve
 
Posterior Interosseous Nerve 01
Which of the following statements about the posterior interosseous nerve is most accurate
 
Anterior Interosseous Nerve 01
Which of the following statements about the anterior interosseous nerve is most accurate
 
Sensory innervation of the upper extremity 04
During a neurologic exam, you apply pressure to a patient's 5th finger, and he tells you that he is able to feel it normally. In general, this suggests that which of the following peripheral structures are intact
 
Sensory innervation of the upper extremity 03
During a neurologic exam, you apply pressure to a patient's middle finger, and he tells you that he is able to feel it normally. In general, this suggests that which of the following peripheral structures are intact
 
Sensory innervation of the upper extremity 02
During a neurologic exam, you apply pressure to a patient's thumb nail bed, and he tells you that he is able to feel it normally. In general, this suggests that which of the following peripheral structures are intact
 
Entrapment Neuropathies 01
What is the most common entrapment neuropathy
 
Sensory innervation of the upper extremity
A 515 year-old Renaissance man presents to your office, complaining of numbness in the region highlighted in red in the image below.Of the following options, which nerve has a sensory distribution that best matches the region illustrated
 
Sensory nerve conduction study normal values
You are performing a sensory nerve conduction test on an adult. You are testing the radial nerve, recording at the snuffbox. Which of the following is the best choice for the distal peak latency
 
Wrist Drop
A 47 year-old male tomato grower presents with wrist and finger drop. He is able to extend his arm at the elbow. Abduction of the upper extremity at the shoulder is intact. He is able to weakly extend the wrist. When he does, the hand deviates radially. Flexion of the wrist is intact...
 
Innervation of muscles of the upper extremity
Which of the following muscles is innervated by the median nerve
 
Muscles innervated by the radial nerve
Which of the following muscles is innervated by the radial nerve
 
Muscles innervated by the ulnar nerve
Which of the following muscles is innervated by the ulnar nerve
 
nerves innervating the muscles of the upper extremity
Which of the following statements regarding nerves innervating the muscles of the upper extremity is FALSE
 
Muscles innervated by the median nerve
Which of the following muscles is innervated by the median nerve
 
Nerve Injuries Affecting the Upper Extremity
A Greek female deity was gouged in the axilla by a Narwhal yesterday. She presents to your clinic today complaining of numbness in the area shaded in green in the image above. She also, as pictured, is unable to extend her arm at the elbow, or abduct at the shoulder...
 
Nerve Injuries Affecting the Upper Extremity
A Greek female deity was gouged in the axilla by a Narwhal yesterday. She presents to your clinic today complaining of numbness in the area shaded in green in the image above. She also, as pictured, is unable to extend her arm at the elbow. Abduction at the shoulder has been spared...
 
Nerve Injuries Affecting the Upper Extremity
A Greek female deity was gouged in the axilla by a Narwhal yesterday. She presents to your clinic today complaining of numbness in the area shaded in green in the image above. She also, as pictured, is unable to extend her arm at the elbow. Abduction at the shoulder has been spared...
 
Nerve Injuries Affecting the Upper Extremity
A Greek female deity was gouged in the axilla by a Narwhal 6 weeks ago. She presents to your clinic today complaining of numbness in the area shaded in green in the image above. She also, as pictured, is unable to extend her arm at the elbow. Abduction at the shoulder has been spared...
 
Nerve Injuries Affecting the Upper Extremity
A Greek female deity was gouged in the axilla by a Narwhal yesterday. She presents to your clinic today complaining of numbness in the area shaded in green in the image above. She also, as pictured, is unable to extend her arm at the elbow. Abduction at the shoulder has been spared...
 



User Forums and Comments



Muscle innervated by Radial Nerve
RAW (as in Radial) BEAST RAW: Radial (picture a beast yelling RAW) Brachialradialis Extensors ABDuctor pollicis longus Supinator Tricepts
 



Online Course Content



Median Nerve Runs with Radial Artery (image)

 
C7
Spinal Root: C7Muscles Innervated:††† anconeus *††† extensor carpi radialis longus††† extensor carpi ulnaris††† extensor digitorum ***††† extensor indicis **††† extensor pollicis longus††† extensor pollicis brevis††† flexor carpi ulnaris††† flexor carpi radialis...
 
C6
Spinal Root: C6Muscles Innervated:††† anconeus **††† biceps brachii*††† deltoid *††† brachioradialis *††† deltoid *††† extensor carpi radialis longus††† flexor carpi radialis **††† Infraspinatous *††† pronator teres **††† triceps ** ***††† supinator ††† Supraspinatus...
 
C5
Spinal Root: C5Muscles Innervated:††† Supraspinatus *††† Infraspinatous *††† Rhomboids††† biceps brachii *††† brachioradialis *††† deltoid†† *††† extensor carpi radialis longus ** Please note, that these muscles along cannot differentiate a C5 radiculopathy from a C6 radiculopathy...
 
Upper Extremity
††† abductor digiti minimi††† abductor pollicis brevis††† anconeus††† biceps brachii†† ††† brachioradialis††† deltoid††† extensor carpi radialis longus††† extensor carpi ulnaris††† extensor digitorum††† extensor indicis††† extensor pollicis longus††† extensor...
 
Digit 1 median-radial comparison study (video)

 
Radial Motor NCS, Recording the Extenor Digitorum Communis (EDC), stimulating proximal to Spiral Groove (image)

 
Radial Motor NCS, Recording the Extenor Digitorum Communis (EDC), stimulating distal to Spiral Groove (image)

 
Radial Motor NCS, Recording the Extenor Digitorum Communis (EDC), stimulating distal to Spiral Groove (image)

 
Upper Extremity Nerve Conduction Studies
MotorAxillary Motor Nerve - recording the Deltoid† Median and Ulnar motor nerves- Recording the 2nd Lumbrical and interossei Median Motor Study - Recording the Abductor Pollicis Brevis Musculocutaneous Motor Nerve - recording the Biceps† Radial Motor Nerve...
 
Motor Nerve Conduction Studies
Axillary Axillary Motor Nerve - recording the DeltoidFacial Facial Motor Nerve – recording the Orbicularis OculiFemoralFemoral Motor Nerve - recording the Rectus FemorisMedian Median Palmar Mixed Nerve (orthodromic) Median Motor Study - Recording the...
 
Radial Motor Nerve Conduction Study, recording Extensor Indicis Proprius, stimulating Proximal to Spiral Groove (image)

 
Radial Motor Nerve - Recording the Extenor Indicis Proprius (EIP)
Origin:† C7-C8 roots, middle and lower trunk and posterior cord of the brachial plexus, radial nerve.Recording Site:† Extensor Indicis Proprius muscle (EIP)Reference Site:† Dorsal and medial wrist, near the styloid process of the ulnaGround:† Posterior forearmStimulation...
 
Radial Motor NCS, Recording the Extenor Indicis Proprius (EIP), stimulating below groove (A) (image)

 
Radial Motor NCS, Recording the Extenor Indicis Proprius (EIP), stimulating below groove (B) (image)

 
Median Sensory Nerve Conduction Study, recording the index finger (antidromic) (image)

 
Radial Sensory Nerve Conduction Study (antidromic) (image)

 
For Comparison, Radial Sensory Nerve Conduction Study - Recording the thumb (antidromic) (image)

 
Median Sensory Nerve Conduction Study - Recording the thumb (antidromic) (image)

 
Radial Motor NCS, Recording the Extenor Digitorum Communis (EDC), stimulating at elbow (image)

 
Radial Motor NCS, Placement of electrodes on EDC (image)

 
Median Sensory Nerve - Recording the index finger (antidromic)
Origin:† C6-C7 roots, upper and middle trunk and lateral cord of the brachial plexus, median nerveRecording Site:† Index fingerReference Site:† Index fingerGround:† Palm or top of handStimulation Site:† WristProcedure:† The recording electrode is placed on the proximal phalanx of the index finger...
 
Median Sensory Nerve - Recording the middle finger (antidromic)
Median Sensory Nerve - middle (antidromic)Origin:† C7 root, middle trunk and lateral cord of the brachial plexus, median nerveRecording Site:† Middle fingerReference Site:† Middle fingerGround:† Palm or top of handStimulation Site:† WristProcedure:† The recording...
 
Median Sensory Nerve - Recording the thumb (antidromic)
Origin:† C6-C7 root, upper and middle trunk and lateral cord of the brachial plexus, median nerve.Recording Site:† ThumbReference Site:† ThumbGround:† Palm or top of handStimulation Site:† WristProcedure:† The recording electrode is placed on the proximal phalanx of the thumb...
 
Radial Sensory Nerve (antidromic)
Origin:† C6-C7 roots, upper or middle trunk and posterior cord of the brachial plexus, radial nerveRecording Site:† Base of the FDI web space between the index finger and thumbReference Site:† Base of thumbGround:† Palm or top of handStimulation Site:† Radius...
 
Median Sensory Nerve - Recording the ring finger (antidromic)
Origin:† C7 roots, middle trunk and lateral cord of the brachial plexus.Recording Site: Ring FingerReference Site:† Ring FingerGround:† Palm or top of handStimulation Site:† Wrist†Procedure:† The recording electrode is placed on the proximal phalanx of the ring finger...
 
Median Palmar Mixed Nerve (orthodromic)
Recording Site:† Wrist over median nerve (bar electrode)Reference Site:† Wrist over median nerve (bar electrode)Ground:† Top of handStimulation Site:† Palm, between the 2nd and 3rd metacarpal bones.Procedure:† The recording and reference electrodes (bar electrode)...
 
Sensory Nerves
Lateral Antebrachial CutaneousLateral Antebrachial Cutaneous Sensory Nerve - Forearm(antidromic)†Lateral Femoral Cutaneous Lateral Femoral Cutaneous Sensory Nerve – recording the lateral thigh (antidromic)Medial Antebrachia; Cutaneous Medial Antebrachial...
 
All Nerves
A list of all nerves commonly tested in alphabetic order.Axillary Axillary Motor Nerve - recording the DeltoidBlink Blink Reflexes – recording the Orbicularis OculiF-waves F-WavesFacial Facial Motor Nerve – recording the Orbicularis OculiFemoralFemoral...
 
Median and Ulnar motor nerves- Recording the 2nd Lumbrical and interossei
Origin:††† Median – C8-T1 roots, lower trunk and medial cord of the brachial plexus, median nerve.Ulnar – C8-T1 roots, lower trunk and medial cord of the brachial plexus, ulnar nerve.Recording Site:† Palm, between the 2nd and 3rd metacarpal bones...
 
Radial Motor Nerve - Recording the Extenor Digitorum Communis (EDC)
Origin:† C7-C8 roots, middle and lower trunk and posterior cord of the brachial plexus, radial nerve.Recording Site:† Extensor Digitorum Communis muscle (EDC)Reference Site:† Above the wristGround:† Medial forearmStimulation Sites:† Elbow and arm (below and...
 
Radial Sensory Nerve (antidromic) (image)

 
Radial Motor Nerve - Recording the Extenor Digitorum Communis (EDC) (image)

 
All Muscles
Muscles:† † abductor digiti minimi† † abductor pollicis brevis† † anconeus† † biceps brachii† † brachioradialis† † cervical paraspinal muscles† † deltoid † † extensor carpi radialis longus † † extensor carpi ulnaris† † extensor digitorum† † extensor indicis...
 
Named Nerves
††† Axillary Nerve††††Femoral Nerve ††† Gluteal Nerve† † Inferior Gluteal Nerve††††††† † † Superior Gluteal Nerve †††† Obturator nerve† †† Median Nerve†††† Musculocutaneous Nerve†††† Peroneal Nerve†† ††† Common Peroneal Nerve†††††† ††† Deep Peroneal Nerve...
 
Triceps
Muscle Name: tricepsAKA:† musculus triceps brachiiAbbreviation: †Spinal Nerve Roots:† † C6† † C7† † C8Brachial Plexus Trunks:† † upper trunk† † middle trunk† † lower trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal Attachment:...
 
Pronator Quadratus
Muscle Name: pronator quadratusAKA:† musculus pronator quadratusAbbreviation:† PQSpinal Nerve Roots:† † C7† † C8† † T1Brachial Plexus Trunks:† † middle trunk† † lower trunkBrachial Plexus Cords:† † medial cord† † lateral cordNamed Nerves:† † median nerve†...
 
Myopathy
MyopathyNerve†† ††† ††† † Recording Sites†† ††† †Stimulation Sites†† ††††† F-WavesMedian (s)†† ††† † index†† ††† ††† ††† †wrist†† ††† orRadial (s)†† ††† † thumb†† ††† †††††††††† forearmMedian (m)†† ††† †APB†† ††† ††† ††† †wrist and elbow†† ††††††††† wristSural...
 
Peripheral Neuropathy/Motor Neuron Disease
Peripheral Neuropathy/Motor Neuron DiseaseNerve†† ††† ††† †Recording Sites†† ††† †Stimulation Sites†† †††††† F-WavesMedian (s)†† ††† †index and middle†† ††† †wristUlnar (s)†† ††† †5th†† ††† ††† ††† †wristRadial (s)†† ††† †thumb†† ††† ††† ††† †forearmMedian...
 
Other Upper Extremity Mononeuropathies (Axillary, Musculocutaneous, Suprascapular, Spinal Accessory, etc…)
Nerve Conductions Studies†Median sensory recording the index and middle fingers.Ulnar sensory recording the ring finger. Radial sensory recording the dorsal thumb.Lateral antebrachial cutaneous sensory recording the forearm.Median motor recording the abductor pollicis brevis with F-Waves...
 
Radial Mononeuropathy
Nerve Conductions Studies Median sensory recording the index and middle fingers. Ulnar sensory recording the ring finger.† Radial sensory recording the bilateral dorsal thumbs.Median motor recording the abductor pollicis brevis with F-Waves.Ulnar motor recording...
 
Neck/Arm pain and root search
Nerve Conductions StudiesMedian sensory recording the index and middle fingers. Ulnar sensory recording the ring finger.† Radial sensory recording the dorsal thumb.Median motor recording the abductor pollicis brevis with F-Waves.Ulnar motor recording the abductor...
 
Ulnar Mononeuropathy
Median sensory recording index and middle† fingers.Ulnar sensory recording the llittle† finger.Radial sensory recording the dorsal thumb.Dorsal Ulnar sensory recording the dorsum of the handMedian motor recording the abductor pollicis brevis with F-Waves.Ulnar...
 
All Nerves
A list of all nerves commonly tested in alphabetic order.Axillary Axillary Motor Nerve - recording the DeltoidBlink Blink Reflexes – recording the Orbicularis OculiF-waves F-WavesFacial Facial Motor Nerve – recording the Orbicularis OculiFemoralFemoral...
 
Carpal Tunnel Syndrome
Nerve Conductions StudiesMedian sensory recording the† index and middle† fingers. Ulnar sensory recording the llittle finger.Radial sensory recording the dorsal thumb. Median motor recording the abductor pollicis brevis with F-Waves. Ulnar motormotor recording...
 
Sensory Nerves
Lateral Antebrachial CutaneousLateral Antebrachial Cutaneous Sensory Nerve - Forearm(antidromic)†Lateral Femoral Cutaneous Lateral Femoral Cutaneous Sensory Nerve – recording the lateral thigh (antidromic)Medial Antebrachia; Cutaneous Medial Antebrachial...
 
Brachial Plexopathy (including Thoracic Outlet Syndrome)
Brachial Plexopathy (including Thoracic Outlet Syndrome)Median sensory recording the bilateral† index and middle fingers.Median sensory recording the bilateral thumbs.Ulnar sensory recording the bilateral llittle fingers.Radial sensory recording the bilateral dorsal thumbs...
 
Upper Extremity Nerve Conduction Studies
MotorAxillary Motor Nerve - recording the Deltoid† Median and Ulnar motor nerves- Recording the 2nd Lumbrical and interossei Median Motor Study - Recording the Abductor Pollicis Brevis Musculocutaneous Motor Nerve - recording the Biceps† Radial Motor Nerve...
 
Motor Nerve Conduction Studies
Axillary Axillary Motor Nerve - recording the DeltoidFacial Facial Motor Nerve – recording the Orbicularis OculiFemoralFemoral Motor Nerve - recording the Rectus FemorisMedian Median Palmar Mixed Nerve (orthodromic) Median Motor Study - Recording the...
 
Median Sensory Nerve - Recording the index finger (antidromic)
Origin:† C6-C7 roots, upper and middle trunk and lateral cord of the brachial plexus, median nerveRecording Site:† Index fingerReference Site:† Index fingerGround:† Palm or top of handStimulation Site:† WristProcedure:† The recording electrode is placed on the proximal phalanx of the index finger...
 
Median Sensory Nerve - Recording the middle finger (antidromic)
Median Sensory Nerve - middle (antidromic)Origin:† C7 root, middle trunk and lateral cord of the brachial plexus, median nerveRecording Site:† Middle fingerReference Site:† Middle fingerGround:† Palm or top of handStimulation Site:† WristProcedure:† The recording...
 
Median Sensory Nerve - Recording the thumb (antidromic)
Origin:† C6-C7 root, upper and middle trunk and lateral cord of the brachial plexus, median nerve.Recording Site:† ThumbReference Site:† ThumbGround:† Palm or top of handStimulation Site:† WristProcedure:† The recording electrode is placed on the proximal phalanx of the thumb...
 
Radial Motor Nerve - Recording the Extenor Digitorum Communis (EDC) (image)

 
Radial Motor Nerve - Recording the Extenor Digitorum Communis (EDC)
Origin:† C7-C8 roots, middle and lower trunk and posterior cord of the brachial plexus, radial nerve.Recording Site:† Extensor Digitorum Communis muscle (EDC)Reference Site:† Above the wristGround:† Medial forearmStimulation Sites:† Elbow and arm (below and...
 
Median and Ulnar motor nerves- Recording the 2nd Lumbrical and interossei
Origin:††† Median – C8-T1 roots, lower trunk and medial cord of the brachial plexus, median nerve.Ulnar – C8-T1 roots, lower trunk and medial cord of the brachial plexus, ulnar nerve.Recording Site:† Palm, between the 2nd and 3rd metacarpal bones...
 
Median Sensory Nerve - Recording the ring finger (antidromic)
Origin:† C7 roots, middle trunk and lateral cord of the brachial plexus.Recording Site: Ring FingerReference Site:† Ring FingerGround:† Palm or top of handStimulation Site:† Wrist†Procedure:† The recording electrode is placed on the proximal phalanx of the ring finger...
 
Biceps Brachii
Muscle Name: biceps brachiiAKA: musculus biceps brachii Abbreviation:† BBSpinal Nerve Roots:† † C5† † C6Brachial Plexus Trunks:† † upper trunkBrachial Plexus Cords:† † lateral cordNamed Nerves:† † musculocutaneous nerveProximal Attachment:† coracoid process of the scapula...
 
Supinator
Muscle Name: supinatorAKA:† Musculus supinatorAbbreviation: †Spinal Nerve Roots:† † C6† † C7Brachial Plexus Trunks:† † upper trunk† † middle trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal Attachment:† Lateral epicondyle...
 
Flexor Carpi Radialis
Muscle Name: flexor carpi radialisAKA:† musculus flexor carpi radialisAbbreviation:† FCRSpinal Nerve Roots:† † C6† † C7Brachial Plexus Trunks:† † upper trunk† † middle trunkBrachial Plexus Cords:† † lateral cordNamed Nerves:† † median nerveProximal Attachment:†...
 
Extensor Pollicis Longus
Muscle Name: extensor pollicis longusAKA:† musculus extensor pollicis longusAbbreviation:† EPLSpinal Nerve Roots:† † C7† † C8Brachial Plexus Trunks:† † middle trunk† † lower trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal...
 
Extensor Pollicis Brevis
Muscle Name: extensor pollicis brevisAKA:† musculus extensor pollicis brevisAbbreviation:† EPBSpinal Nerve Roots:† † C7† † C8Brachial Plexus Trunks:† † middle trunk† † lower trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal...
 
Extensor Indicis
Muscle Name: extensor indicisAKA:† musculus extensor indicisAbbreviation:† EIPSpinal Nerve Roots:† † C7† † C8Brachial Plexus Trunks:† † middle trunk† † lower trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal Attachment:† ulnaDistal...
 
Extensor Digitorum Communis
Muscle Name: extensor digitorum communis AKA:† musculus extensor digitorumAbbreviation:† EDCSpinal Nerve Roots:† † C7† † C8Brachial Plexus Trunks:† † middle trunk† † lower trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal Attachment:†...
 
Extensor Carpi Ulnaris
Muscle Name: extensor carpi ulnarisAKA:† musculus extensor carpi ulnarisAbbreviation:† ECUSpinal Nerve Roots:† † C7† † C8Brachial Plexus Trunks:† † middle trunk† † lower trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal Attachment:†...
 
Agenesis of the corpus callosum, mid sagittal section through brain, close-up (image)

 
Agenesis of the corpus callosum, mid sagittal section through brain. (image)

 
Extensor Carpi Radialis Longus
Muscle Name: extensor carpi radialis longusAKA: †Abbreviation: †Spinal Nerve Roots:† † C5† † C6† † C7Brachial Plexus Trunks:† † upper trunk† † middle trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal Attachment:† Lateral supracondylar...
 
Extensor carpi radialis longus highlighted (image)

 
Copy of Median Sensory Nerve - Recording the index finger (antidromic)
Origin:† C6-C7 roots, upper and middle trunk and lateral cord of the brachial plexus, median nerveRecording Site:† Index fingerReference Site:† Index fingerGround:† Palm or top of handStimulation Site:† WristProcedure:† The recording electrode is placed on the proximal phalanx of the index finger...
 
Median Palmar Mixed Nerve (orthodromic)
Recording Site:† Wrist over median nerve (bar electrode)Reference Site:† Wrist over median nerve (bar electrode)Ground:† Top of handStimulation Site:† Palm, between the 2nd and 3rd metacarpal bones.Procedure:† The recording and reference electrodes (bar electrode)...
 
Radial Sensory Nerve (antidromic) (image)

 
Radial Sensory Nerve (antidromic)
Origin:† C6-C7 roots, upper or middle trunk and posterior cord of the brachial plexus, radial nerveRecording Site:† Base of the FDI web space between the index finger and thumbReference Site:† Base of thumbGround:† Palm or top of handStimulation Site:† Radius...
 
Extensor Carpi Radialis Longus EMG Technique (video)

 
Brachioradialis
Muscle Name: brachioradialisAKA:† musculus brachioradialisAbbreviation: †Spinal Nerve Roots:† † C5† † C6Brachial Plexus Trunks:† † upper trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal Attachment: Lateral supracondylar ridge...
 
Brachioradialis (image)

 
highlighted_brachioradialis (image)

 
Brachioradialis (image)

 
Anconeus
Muscle Name: anconeusAKA:  musculus anconeusAbbreviation:  Spinal Nerve Roots:    C6    C7    C8Brachial Plexus Trunks:    upper trunk    middle trunk    lower trunkBrachial Plexus Cords:    posterior cordNamed Nerves:    radial nerveProximal...
 
Anconeus
Muscle Name: anconeusAKA:  musculus anconeusAbbreviation:  Spinal Nerve Roots:    C6    C7    C8Brachial Plexus Trunks:    upper trunk    middle trunk    lower trunkBrachial Plexus Cords:    posterior cordNamed Nerves:    radial nerveProximal...
 
Anconeus
Muscle Name: anconeusAKA:† musculus anconeusAbbreviation: †Spinal Nerve Roots:† † C6† † C7† † C8Brachial Plexus Trunks:† † upper trunk† † middle trunk† † lower trunkBrachial Plexus Cords:† † posterior cordNamed Nerves:† † radial nerveProximal Attachment:†...
 
Normal samples
In order to recognize pathology, it is necessary to know what normal tissues look like. To that end, we present here a set of slides which depict normal anatomy, both on the gross and microscopic level. Throughout this course, whenever new pathologic concepts...
 
Flexor Carpi Radialis EMG Technique (video)

 
Brachioradialis EMG Technique (video)

 
Opponens Pollicis
Muscle Name: opponens pollicisAKA: †Abbreviation: †Spinal Nerve Roots:† † C8† † T1Brachial Plexus Trunks:† † lower trunkBrachial Plexus Cords:† † medial cordNamed Nerves:† † median nerveProximal Attachment: Trapezium and transverse carpal ligament.Distal Attachment:†...
 
Abductor Pollicis Brevis
Muscle Name: abductor pollicis brevisAKA: †Abbreviation: APBSpinal Nerve Roots:† † C8† † T1Brachial Plexus Trunks:† † lower trunkBrachial Plexus Cords:† † medial cordNamed Nerves:† † median nerveProximal Attachment: Transverse carpal ligament, the scaphoid...
 
Flexor Carpi Radialis highlighted (image)

 
Flexor Carpi Radialis highlighted (image)

 
Flexor Carpi Radialis with arrow (image)

 
Extensor Carpi Radialis Longus (image)

 
Median Nerve
Nerve: Median NerveMuscles Innervated:† † pronator teres† † flexor carpi radialis† † flexor digitorum superficialis† † abductor pollicis brevis† † opponens pollicis† † pronator quadratus† † flexor digitorum profundus to digit 2† † flexor digitorum profundus...
 
Lateral Cord of the Brachial Plexus
Cord: Lateral CordMuscles Innervated:† † pronator teres† † flexor carpi radialis† † flexor digitorum superficialis† † pronator quadratus† † flexor pollicis longus † † biceps brachii
 
Middle Trunk of the Brachial Plexus
Trunk: Middle TrunkSpinal Segments:C7Muscles Innervated:† † pronator teres† † flexor carpi radialis† † flexor digitorum superficialis† † pronator quadratus† † flexor pollicis longus † † triceps† † extensor carpi radialis longus† † extensor carpi ulnaris† †...
 
Flexor Pollicis Longus
Muscle Name: flexor pollicis longusAKA: †Abbreviation:† FPLSpinal Nerve Roots:† † C7† † C8† † T1Brachial Plexus Trunks:† † middle trunk† † lower trunkBrachial Plexus Cords:† † medial cord† † lateral cordNamed Nerves:† † anterior interosseous nerve † † median...
 
Flexor Carpi Radialis (image)

 
Posterior Cord of the Brachial Plexus
Cord: Posterior CordMuscles Innervated:† † triceps† † brachioradialis† † extensor carpi radialis longus† † supinator† † extensor carpi ulnaris† † extensor digitorum† † extensor pollicis longus† † extensor pollicis brevis† † extensor indicis† † anconeus† † deltoid
 
Radial Nerve
Nerve: Radial NerveMuscles Innervated:† † triceps† † brachioradialis† † extensor carpi radialis longus† † supinator† † extensor carpi ulnaris† † extensor digitorum† † extensor pollicis longus† † extensor pollicis brevis† † extensor indicis† † anconeus
 
Upper Trunk of the Brachial Plexus
Trunk: Upper TrunkSpinal Segments:C5, C6Muscles Innervated:† † pronator teres† † flexor carpi radialis† † triceps† † brachioradialis† † extensor carpi radialis longus† † anconeus† † biceps brachii† † deltoid
 
Lhermitte-Duclos disease, H&E stained section (image)

 
Ependymal Pseudorosette with arrow (image)

 
Ependymomas
Ependymomas are classified as glial tumors, although they also have epithelial properties. † They are common, accounting for 3%-9% of all brain tumors.† They can occur at any age, but are somewhat more common in children.40% of ependymomas occur in the first decade of life...
 



Gallery Images



Median Nerve Runs with Radial Ar

 
Radial Motor NCS, Recording the

 
Radial Motor NCS, Recording the

 
Radial Motor NCS, Recording the

 
Radial Motor Nerve Conduction St

 
Median Sensory Nerve Conduction

 
Radial Sensory Nerve Conduction

 
Radial Sensory Nerve Conduction

 
Median Sensory Nerve Conduction

 
Radial Motor NCS, Recording the

 
Radial Motor NCS, Recording the

 
Radial Motor NCS, recording from

 
Radial Motor NCS, Placement of e

 
Radial Motor Nerve - Recording t

 
Extensor carpi radialis longus h

 
Radial Sensory Nerve (antid

 
Vitruvian RUE Radial

 
highlighted_brachioradialis

 
Flexor Carpi Radialis highlighte

 
Flexor Carpi Radialis highlighte

 
Flexor Carpi Radialis with arrow

 
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Ependymal Pseudorosette with arr

 
Venus Radial