UE Innervation Flashcards by nathan camp

Abductor pollicis brevis (APB) innervation

C8-T1
Lower trunk
Medial cord
Median nerve

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Opponens Pollicis innervation

C8-T1
Lower trunk
Medial cord
Median nerve

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Flexor Pollicis Brevis (FPB) innervation

Superficial
Deep

C8-T1
lower trunk
medial cord
*Median nerve

C8-T1
lower trunk
medial cord
*Ulnar nerve

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Pronator Quadratus innervation

C7-T1 (predominantly C8)
Middle-lower trunks
Lateral-medial cords
Median nerve ( AIN)

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Flexor Pollicis Longus (FPL) innervation

C7-T1 (predominantly C8)
Middle-lower trunks
Lateral-medial cords
Median nerve ( AIN)

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Flexor Digitorum Profundus - Digits 2, 3 innervation

C7-T1 (predominantly C8)
Lower trunk
Medial cord
Median nerve ( AIN)

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Flexor Digitorum Sublimis (FDS) innervation

C7-C8 (predominantly C8)
Middle-lower trunks
Medial-lateral cords
Median nerve

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Flexor Carpi Radialis innervation

C6-C7
Upper - middle trunks
Lateral cord
Median nerve

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Pronator teres innervation

C6-C7
Upper - middle trunks
Lateral cord
Median nerve

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First dorsal interosseous innervation

C8-T1
Lower trunk
Medial cord
Ulnar nerve

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Abductor digiti minimi innervation

C8-T1
Lower trunk
Medial cord
Ulnar nerve

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Flexor Digitorum Profundus - Digits 4, 5 innervation

C7-T1 (predominantly C8)
Lower trunk
Medial cord
Ulnar nerve

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Flexor carpi ulnaris innervation

C8-T1 (mostly C8)
Lower trunk
Medial cord
Ulnar nerve

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Extensor indicis proprius innervation

C7-C8 (mostly C8)
Middle-lower trunk
Posterior cord
Radial nerve, PIN

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Extensor Carpi Ulnaris innervation

C7-C8 (mostly C8)
Middle-lower trunk
Posterior cord
Radial nerve, PIN

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Extensor Digitorum Communis innervation

C7-C8 (mostly C7)
Middle-lower trunk
Posterior cord
Radial nerve, PIN

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Extensor Carpi Radialis - Long head innervation

C6-C7
Upper-middle trunk
Posterior cord
Radial nerve

Brachioradialis innervation

C5-C6
Upper trunk
Posterior cord
Radial nerve

Anconeus innervation

C6-C8 (mostly C7)
Upper/middle/lower trunks
Posterior cord
Radial nerve

Triceps lateral head innervation

C6-C8 (mostly C7)
Upper/middle/lower trunks
Posterior cord
Radial nerve

Biceps innervation

C5-C6
Upper trunk
Lateral cord
Musculocutaneous nerve

Pectoralis major innervation

C5-T1 (mostly C6-C8)
Upper/middle/lower trunks
Medial-lateral cords
Medial-lateral pectoral nerves

Deltoid medial head innervation

C5-C6
Upper trunk
Posterior cord
Axillary nerve

Teres minor innervation

C5-C6
Upper trunk
Posterior cord
Axillary nerve

Upper trapezius innervation

C3-C4 Spinal accessory nerve

Sternocleidomastoid innervation

Upper cervical cord Spinal accessory nerve

Supraspinatus innervation

C5-C6 Upper trunk Suprascapular nerve

Infraspinatus innervation

C5-C6 Suprascapular nerve

Rhomboids innervation

C4-C5 (mostly C5) Dorsal scapular nerve

Latissimus Dorsi innervation

C6-C8 (mostly C7) Upper/middle/lower trunks Posterior cord Thoracodorsal nerve

Serratus anterior innervation

C5-C7 Long thoracic nerve

Brachialis innervation

C5-C6 Upper trunk Lateral cord Musculocutaneous nerve

Teres Major innervation

C5-C6 Upper trunk Posterior cord Lower Subscapular nerve

Supinator innervation

C5-C6 Upper trunk Posterior cord Radial nerve (PIN)

Coracobrachialis innervation

C6-C7 Upper and middle trunks Lateral cord Musculocutaneous nerve

Lumbricals 1,2 innervation Lumbricals 3,4 innervation

C8-T1 Lower trunk Medial cord *Median nerve C8-T1 Lower trunk Medial cord *Ulnar nerve

Adductor pollicis innervation

C8-T1 Lower trunk Medial cord Ulnar nerve

List muscles in C5-C6 and Axillary nerve: Musculocutaneous nerve: Radial nerve:

*Deltoid Teres minor *Biceps brachii Brachialis *Brachioradialis

List muscles in C6-C7 Musculocutaneous nerve: Radial nerve: Median nerve:

Coracobrachialis Supinator ECR *Triceps (C6-C8) Anconeus (C6-C8) *Pronator teres FCR

List muscles in C7-C8 and Radial nerve: Median nerve:

-Radial nerve (C7-C8): *Extensor digitorum communis Extensor digiti minimi Abductor pollicis longus Extensor pollicis longus Extensor pollicis brevis Extensor indicis proprius Extensor Carpi Ulnaris -Median nerve (all C7-T1): Palmaris longus *FDS FDP ( II, III) FPL Pronator quadratus

List muscles in C8-T1 and Median nerve: Ulnar nerve:

**Median:** “LOAF” Lumbricals ( II, III) Opponens pollicis *APB Flexor pollicis brevis (superficial) **Ulnar:** Flexor pollicis brevis ( deep) Adductor pollicis *FCU FDP (IV, V) Opponens digiti minimi *Abductor digiti minimi *Interossei Lumbricals (III, IV)

Upper Extremity Root screen for Radiculopathy Goal: test same nerve root, with 2 different peripheral nerves - Add in additional muscles of same nerve root if that seems affected to confirm - Add in additional muscles of same peripheral nerve if that seems affected to confirm

1. Deltoid - C5-C6 axillary nerve 2. Biceps brachii - C5-C6 musculocutaneous nerve 3. Triceps - C6-C8 radial nerve 4. Pronator teres - C6-C7 median nerve 5. Extensor digitorum communis (EDC) - C7-C8 radial nerve 6. First Dorsal Interossei ( FDI) - C8-T1 ulnar nerve 7. Abductor Pollicis Brevis ( APB) - C8-T1 median nerve extra if needed: - Brachioradialis - C5-C6 radial nerve -Abductor digiti minimi (ADM) - C8-T1 ulnar nerve -Flexor carpi ulnaris ( FCU) - C8-T1 ulnar nerve