branches
? Relations ? cervical & axillary part
--- Content provided by FirstRanker.com ---
? Main nerves of arm, forearm & hand? Nerve course, injuries & applied aspects
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
Wasted Thenar Muscles
Winging of scapula
--- Content provided by FirstRanker.com ---
Winging of
scapula
--- Content provided by FirstRanker.com ---
Wrist drop
--- Content provided by FirstRanker.com ---
Week 7
Week 5
--- Content provided by FirstRanker.com ---
RULE -Limbs are outgrowths of ventral
body wall that undergo distal
growth and dif erentiation...5th
--- Content provided by FirstRanker.com ---
Weekand rotation...7th week
Upper Limb
--- Content provided by FirstRanker.com ---
Anterior
Muscle
--- Content provided by FirstRanker.com ---
CompartmentsHumerus
Arm
--- Content provided by FirstRanker.com ---
Posterior
Anterior
--- Content provided by FirstRanker.com ---
ForearmRadius
Ulnar
--- Content provided by FirstRanker.com ---
Posterior
Anterior
--- Content provided by FirstRanker.com ---
Hand5th metacarpal
--- Content provided by FirstRanker.com ---
AnteriorHumerus
Arm
--- Content provided by FirstRanker.com ---
Posterior
Few muscles of posterior
compartment are present in
--- Content provided by FirstRanker.com ---
anterolateral aspect ofAnterior
forearm (*brachioradialis,
--- Content provided by FirstRanker.com ---
supinator)Forearm
*
--- Content provided by FirstRanker.com ---
Radius
Ulnar
--- Content provided by FirstRanker.com ---
PosteriorAnterior
Hand
--- Content provided by FirstRanker.com ---
No posterior compartment in the hand
5th metacarpal
--- Content provided by FirstRanker.com ---
AnteriorMusculocutaneous n.
Motor innervation
--- Content provided by FirstRanker.com ---
Muscle Compartments
Humerus
--- Content provided by FirstRanker.com ---
Radial n.Posterior
Anterior
--- Content provided by FirstRanker.com ---
Median n. & Ulnar n.
Radius
--- Content provided by FirstRanker.com ---
UlnaRadial n.
Posterior
--- Content provided by FirstRanker.com ---
Ulnar n. & Median n.
Anterior
--- Content provided by FirstRanker.com ---
5th metacarpalPosterior
--- Content provided by FirstRanker.com ---
Muscles of Arm: Cross elbow Move forearm? Two compartments ? Anterior & posterior
? 1. Anterior: Flexors of forearm
? 2. Posterior: Extensors of forearm
--- Content provided by FirstRanker.com ---
Anterior Compartment ? MCN + Axillary A & Brachial A? Biceps brachii = Musculocutaneous nerve
? Brachialis = Musculocutaneous nerve
--- Content provided by FirstRanker.com ---
? Coracobrachialis = Musculocutaneous nerve
? Brachioradialis = Radial nerve
--- Content provided by FirstRanker.com ---
Posterior Compartment ? RN + Profunda Brachii Artery? Triceps brachii = Radial nerve
? Anconeus = Radial nerve
--- Content provided by FirstRanker.com ---
RULE : Ventral vs. dorsal limb mm.
Developmentally-dorsal muscles:
--- Content provided by FirstRanker.com ---
? Lie posterior to the long bones in anatomical position(* exceptions)
Developmentally-ventral muscles:
--- Content provided by FirstRanker.com ---
? Lie anterior to the long bones in anatomical position*
--- Content provided by FirstRanker.com ---
Brachial plexus? Supraclavicular part ? neck ? posterior
triangle b/w sclaneus anterior & sclaneus
--- Content provided by FirstRanker.com ---
medius ? roots & trunks? Infraclavicular part ? axilla ? divisions /cords
& branches
--- Content provided by FirstRanker.com ---
? Cords ? named as per relation to second part
of axillary artery ? deep to pectoral minor
--- Content provided by FirstRanker.com ---
? Lateral cord ? lateral , posterior cord ?posterior & medial cord ?medial to 2nd part
of axillary artery
--- Content provided by FirstRanker.com ---
Brachial Plexus
(right side; simplified)
--- Content provided by FirstRanker.com ---
"Roots of BP"(=ventral rami)
C5
--- Content provided by FirstRanker.com ---
C6
Trunks
--- Content provided by FirstRanker.com ---
C7U
Divisions
--- Content provided by FirstRanker.com ---
C8
M
--- Content provided by FirstRanker.com ---
CordTerminal
Lat
--- Content provided by FirstRanker.com ---
L
T1
--- Content provided by FirstRanker.com ---
BranchesPost
Med
--- Content provided by FirstRanker.com ---
Anterior (ventral) division
Posterior (dorsal) division
--- Content provided by FirstRanker.com ---
Brachial Plexus
(right side; simplified)
"Roots of BP"
--- Content provided by FirstRanker.com ---
(=ventral rami)
C5
--- Content provided by FirstRanker.com ---
C6Trunks
C7
--- Content provided by FirstRanker.com ---
U
Divisions
--- Content provided by FirstRanker.com ---
C8M
Cord
--- Content provided by FirstRanker.com ---
Terminal
Lat
--- Content provided by FirstRanker.com ---
LT1
Branches
--- Content provided by FirstRanker.com ---
Post
Musculocutaneous n.
--- Content provided by FirstRanker.com ---
MedMedian n.
Radial n.
--- Content provided by FirstRanker.com ---
Anterior (ventral) division
Ulnar n.
--- Content provided by FirstRanker.com ---
Posterior (dorsal) divisionBrachial plexus - cords
--- Content provided by FirstRanker.com ---
Lateral cord ? LML ? Lateral Pectoral n, Musculocutaneous
n, lateral root of Median n
--- Content provided by FirstRanker.com ---
Medial cord ? MMMMU ? Medial pectoral n, Medial
cutaneous n of forearm, Medial cutaneous n of arm , Ulnar
--- Content provided by FirstRanker.com ---
n & Medial root of median n.Posterior cord ? LUNAR ? Lower subscapular n, Upper
--- Content provided by FirstRanker.com ---
subscapular n , Nerve to latissimus dorsi, Axillary n & Radial
n.
31
--- Content provided by FirstRanker.com ---
Brachial plexus - cords1. Lateral cord ? LML ? Lateral Pectoral n,
--- Content provided by FirstRanker.com ---
Musculocutaneous n, lateral root of Median n
2. Medial cord ? MMMMU ? Medial pectoral n,
--- Content provided by FirstRanker.com ---
Medial cutaneous n of forearm, Medial
cutaneous n of arm , Ulnar n & Medial root of
--- Content provided by FirstRanker.com ---
median n.3. Posterior cord ? LUNAR ? Lower subscapular n,
--- Content provided by FirstRanker.com ---
Upper subscapular n , Nerve to latissimus dorsi,Axillary n & Radial n.
32
--- Content provided by FirstRanker.com ---
Brachial plexus - cords
--- Content provided by FirstRanker.com ---
1. Lateral cord ? LML ? Lateral Pectoral n,Musculocutaneous n, lateral root of Median n
--- Content provided by FirstRanker.com ---
2. Medial cord ? MMMMU ? Medial pectoral n, Medial
cutaneous n of forearm, Medial cutaneous n of arm ,
Ulnar n & Medial root of median n.
--- Content provided by FirstRanker.com ---
3. Posterior cord ? LUNAR ? Lower subscapular n, Upper
--- Content provided by FirstRanker.com ---
subscapular n , Nerve to latissimus dorsi, Axillary n &Radial n.
33
Brachial plexus ? supraclavicular
--- Content provided by FirstRanker.com ---
branches - roots & trunks? Branch to Phrenic nerve ?C5 ?anterior to sclaneus
anterior
--- Content provided by FirstRanker.com ---
? Dorsal scapular n ? C5 ? pierces sclaneus medius,
supplies rhomboids & levator scapulae
--- Content provided by FirstRanker.com ---
? Long thoracic n ? C5C6C7 ? (C7 ? may be absent) uppertwo roots C5C6 pierce sclaneus medius , runs b/w
sclaneus ant & medius ? Supply - serratus anterior.
--- Content provided by FirstRanker.com ---
? TRUNKS ? Upper? Nerve to subclavius ? Erb's Point - C5 C6 ?subclavius (
gives - accessory phrenic nerve ?C5)
--- Content provided by FirstRanker.com ---
? Suprascapular n- C5C6 ? supra & infraspinatus , articular? shoulder, acromioclavicular,
34
--- Content provided by FirstRanker.com ---
Brachial plexus-
? Lateral pectoral n- C5C6C7 ? LC -larger, pierces
--- Content provided by FirstRanker.com ---
clavipectoral fascia ,ant to axillary art- pectoralis major& minor.
? Medial pectoral n- C8T1-MC- , pierces pectoralis minor
--- Content provided by FirstRanker.com ---
& supplies both pectoralis major & minor.? Upper sub scapular n- smaller ? frequently double.
? Lower sub scapular n- subscapularis & teres major.
? Axillary n- ant branch ?deltoid & post branch- has
--- Content provided by FirstRanker.com ---
pseudoganglion supplies teres minor ,cutaneous ? as-
upper lateral cutaneous nerve of arm .
--- Content provided by FirstRanker.com ---
Brachial Plexus
--- Content provided by FirstRanker.com ---
C5
(branches)
--- Content provided by FirstRanker.com ---
C6supraspinatus
suprascapular n.
--- Content provided by FirstRanker.com ---
C7
& infraspinatus
--- Content provided by FirstRanker.com ---
*mm.
C8
--- Content provided by FirstRanker.com ---
T1
**
--- Content provided by FirstRanker.com ---
upper subscapular n.subscapularis m.
axillary n. thoracodorsal n.
--- Content provided by FirstRanker.com ---
latissimus dorsi
lower subscapular n.
--- Content provided by FirstRanker.com ---
m.deltoid & teres minor mm.
Brachial Plexus
--- Content provided by FirstRanker.com ---
(branches)rhomboid mm.
dorsal
--- Content provided by FirstRanker.com ---
scapular n.C5
C6
--- Content provided by FirstRanker.com ---
suprascapular n.
C7
--- Content provided by FirstRanker.com ---
*C8
pectoralis mm. lateral pectoral n.
--- Content provided by FirstRanker.com ---
serratus
T1 anterior m.
--- Content provided by FirstRanker.com ---
musculoskeletaln.
long
--- Content provided by FirstRanker.com ---
thoracic n.medial n.
medial pectoral n.
--- Content provided by FirstRanker.com ---
pectoralis
**
--- Content provided by FirstRanker.com ---
mm.upper subscapular n.
thoracodorsal n.
--- Content provided by FirstRanker.com ---
axillary n.lower subscapular n.
ulnar n.
--- Content provided by FirstRanker.com ---
radial n.
Brachial Plexus
--- Content provided by FirstRanker.com ---
(all branches)Dorsal
scapular n.
--- Content provided by FirstRanker.com ---
C5C6
Suprascapular n.
--- Content provided by FirstRanker.com ---
C7
*
--- Content provided by FirstRanker.com ---
C8Lateral pectoral n.
T1
--- Content provided by FirstRanker.com ---
Musculoskeletal n.
Long
--- Content provided by FirstRanker.com ---
thoracic n.Medial n.
Medial pectoral n.
--- Content provided by FirstRanker.com ---
**
Upper & lower subscapular nn.
Thoracodorsal n.
--- Content provided by FirstRanker.com ---
Axillary n.
Ulnar n.
--- Content provided by FirstRanker.com ---
* Nerve to subclaviusRadial n.
** Medial brachial & antebrachial cutaneous nn.
--- Content provided by FirstRanker.com ---
Brachial plexus - cords
--- Content provided by FirstRanker.com ---
Lateral cord ? LML ? Lateral Pectoral n, Musculocutaneousn, lateral root of Median n
--- Content provided by FirstRanker.com ---
Medial cord ? MMMMU ? Medial pectoral n, Medial
cutaneous n of forearm, Medial cutaneous n of arm , Ulnar
n & Medial root of median n.
--- Content provided by FirstRanker.com ---
Posterior cord ? LUNAR ? Lower subscapular n, Upper
--- Content provided by FirstRanker.com ---
subscapular n , Nerve to latissimus dorsi, Axillary n & Radialn.
39
Brachial plexus - cords
--- Content provided by FirstRanker.com ---
? Lateral cord ? LML ? Lateral Pectoral n,
--- Content provided by FirstRanker.com ---
Musculocutaneous n, lateral root of Median n? Medial cord ? MMMMU ? Medial pectoral n, Medial
--- Content provided by FirstRanker.com ---
cutaneous n of forearm, Medial cutaneous n of arm ,
Ulnar n & Medial root of median n.
--- Content provided by FirstRanker.com ---
? Posterior cord ? LUNAR ? Lower subscapular n, Upper
subscapular n , Nerve to latissimus dorsi, Axillary n &
Radial n.
--- Content provided by FirstRanker.com ---
Nerve supply of Scapular Muscles
? Origin on Scapula:
--- Content provided by FirstRanker.com ---
? Latissimus dorsi = Thoracodorsal nerve /N tolatissimus dorsi
? Subscapularis & Teres Major = Subscapular nerves
--- Content provided by FirstRanker.com ---
? Supraspinatus & Infraspinatus = Suprascapular
nerves
--- Content provided by FirstRanker.com ---
? Deltoid & Teres Minor = Axillary nerve? Insertion on Scapula
? Levator Scapularis & Rhomboids = Dorsal Scapular
--- Content provided by FirstRanker.com ---
nerve
? Pectoralis Minor = lat & medial Pectoral nn.
--- Content provided by FirstRanker.com ---
? Serratus anterior = Long Thoracic n/nerve of bell? Trapezius = Accessory spinal n.
--- Content provided by FirstRanker.com ---
Branches - Posterior Cord? Axillary Nerve ( w . Circumflex vs..)
? Supplies:
--- Content provided by FirstRanker.com ---
? Deltoid & Teres minor (motor supply )
? Capsule of shoulder
--- Content provided by FirstRanker.com ---
? skin of lower part covering deltoid (sensorysupply)
? Subscapular Nerves {C5,C6} : Subscapularis &
--- Content provided by FirstRanker.com ---
Teres major
? Thoracodorsal Nerve : Latissimus dorsi
--- Content provided by FirstRanker.com ---
Injury to axillary nerveWaisting of shoulder
--- Content provided by FirstRanker.com ---
Winging of the ScapulaCombined Axillary and Long Thoracic Nerve
Injuries
--- Content provided by FirstRanker.com ---
Fore arm ?muscles
1. Flexor Compartment : Anterior
--- Content provided by FirstRanker.com ---
(Superficial 5 + Deep 3) - supplied byMedian, Anterior Interosseous Nerve &
Ulnar nerves
--- Content provided by FirstRanker.com ---
2. Extensor Compartment : Posterior(Superficial + Deep)
Radial & Posterior interosseous nerve.
--- Content provided by FirstRanker.com ---
Radial nerve injury in arm
--- Content provided by FirstRanker.com ---
Wrist drop
Anterior Compartment Forearm = 5 +3
--- Content provided by FirstRanker.com ---
1 Pronator teres
Median n
--- Content provided by FirstRanker.com ---
2 Flexor digitorum superficialis Median n3 Flexor carpi radialis
Median n
--- Content provided by FirstRanker.com ---
4 Palmaris longus
Median n
--- Content provided by FirstRanker.com ---
5 Flexor carpi ulnarisUlnar nerve
1 Pronator quadratus
--- Content provided by FirstRanker.com ---
Anterior interosseous n-Median n
2 Flexor digitorum profundus
--- Content provided by FirstRanker.com ---
Anterior interosseous n-Median n& Ulnar nerve
3 Flexor pollicis longus
--- Content provided by FirstRanker.com ---
Anterior interosseous n- Median n
Posterior Compartment Forearm ?
superficial - 7
--- Content provided by FirstRanker.com ---
1 Anconeus
Radial n
--- Content provided by FirstRanker.com ---
2 BrachioradialisRadial n
3 Extensor carpi radialis longus
--- Content provided by FirstRanker.com ---
Radial
4 Extensor carpi radialis brevis
--- Content provided by FirstRanker.com ---
Posterior interosseous? Radial n--- Content provided by FirstRanker.com ---
5 Extensor digitorum
Posterior interosseous? Radial n
--- Content provided by FirstRanker.com ---
6 Extensor digiti minimi
Posterior interosseous? Radial n
--- Content provided by FirstRanker.com ---
7 Extensor carpi ulnarisPosterior interosseous? Radial n
--- Content provided by FirstRanker.com ---
Posterior Compartment Forearm ? deep - 51 Supinator
Posterior interosseous? Radial n
--- Content provided by FirstRanker.com ---
2 Abductor pollicis longus
Posterior interosseous? Radial n
--- Content provided by FirstRanker.com ---
3 Extensor pollicis brevis
Posterior interosseous? Radial n
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
4 Extensor pollicis longusPosterior interosseous? Radial n
--- Content provided by FirstRanker.com ---
5 Extensor indicis
--- Content provided by FirstRanker.com ---
Posterior interosseous? Radial nHand ? Median nerve - 5
Flexor pollicis brevis
--- Content provided by FirstRanker.com ---
Median nAbductor pollicis brevis
Median n
--- Content provided by FirstRanker.com ---
Opponens pollicis
Median n
--- Content provided by FirstRanker.com ---
1st lumbricalMedian n
2nd lumbrical
--- Content provided by FirstRanker.com ---
Median n
Hand ? Ulnar nerve - 15
--- Content provided by FirstRanker.com ---
Flexor digiti minimiUlnar n
--- Content provided by FirstRanker.com ---
Abductor digiti minimiUlnar n
--- Content provided by FirstRanker.com ---
Opponens digiti minimiUlnar n
--- Content provided by FirstRanker.com ---
Interossei ? palmar & dorsal (8) Ulnar n3rd & 4th lumbricals (2)
--- Content provided by FirstRanker.com ---
Ulnar n
Palmaris brevis
--- Content provided by FirstRanker.com ---
Ulnar n ? superficial branchPosterior Compartment of Forearm
Muscle
--- Content provided by FirstRanker.com ---
Nerve
? Superficial
--- Content provided by FirstRanker.com ---
? Extensor carpi radialis Longus & BrevisRN
? Extensor digitorum (communis) RN
--- Content provided by FirstRanker.com ---
? Extensor digiti minimi
--- Content provided by FirstRanker.com ---
RN
--- Content provided by FirstRanker.com ---
? Extensor carpi ulnaris
--- Content provided by FirstRanker.com ---
RN
--- Content provided by FirstRanker.com ---
? Deep (post gp) - PIN
? Supinator
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
Radial n + PIN
--- Content provided by FirstRanker.com ---
? Abductor pollicis longus--- Content provided by FirstRanker.com ---
PIN
--- Content provided by FirstRanker.com ---
? Extensor pollicis longus + brevis PIN? Extensor indicis
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
PIN
--- Content provided by FirstRanker.com ---
An inability to oppose thumb to little fingercan result from injury to -
a) Axillary n
--- Content provided by FirstRanker.com ---
b) Radial n
c) Ulnar n
--- Content provided by FirstRanker.com ---
d) Median nHyperextension of proximal phalanges of
--- Content provided by FirstRanker.com ---
little and ring fingers can happen due tonerve injury of -
a) Ulnar
--- Content provided by FirstRanker.com ---
b) Axillaryc) Radial
d) Median
--- Content provided by FirstRanker.com ---
Inablity to abduction of arm can happen due
--- Content provided by FirstRanker.com ---
to nerve injury of -a) Axillary
b) Musculocutaneous
--- Content provided by FirstRanker.com ---
c) Radial
d) Median
--- Content provided by FirstRanker.com ---
Wrist drop can result from damage to -
a) Median n
b) Ulnar n
--- Content provided by FirstRanker.com ---
c) Radial n
d) Anterior interosseous n
--- Content provided by FirstRanker.com ---