Transcript Upper Limb Regions

Upper Limb Regions
• Shoulder
• Arm & Forearm
• Hand
Shoulder region
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Bones
Joints
Muscles
Vessels & Nerves
Shoulder Osteology
•Clavicle
•Scapula
•Humerus
Clavicle Sup.
S shape
Latin clavis = key, old Roman key was S-shaped
Clavicle Inf.
Ligaments attachment
Conoid: cone shape
Clavicle Ant.
Medial & lateral ends
korax = a crow
Posterior
Anterior
Glene: Greek = socket
acromion: Greek akros = Hill
Shoulder Separation
Ant.
Lat.
Subacromial bursa
Bursitis
Shoulder X-ray, AP projection
1, Clavicle.
2, Acromion.
3, Greater tubercle.
4, Lesser tubercle.
5, Neck of Humerus.
6, Humerus.
7, Coracoid Process.
8, Axillary border of
scapula.
9, Rib.
Shoulder region
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Bones
Joints
Muscles
Vessels & Nerves
Classifications of muscles that move
the shoulder
• A. muscles connecting scapula to humerus
• B. muscles connecting trunk to scapula
• C. muscles connecting trunk to humerus
Biceps & Triceps tendons
A. muscles connecting scapula to humerus
1.
2.
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5.
6.
7.
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
Teres major
Coracobrachialis
Deltoid
Short muscles
Quiz
supraspinatus
infraspinatus
teres minor
subscapularis
Teres major
• Origin:
– Inf angle of scapula
• Insertion:
– Med lip of groove
• Actions:
– Internal rotation and
adduction of arm
Coracobrachialis
• Function:
flex & adduct
the shoulder joint
Deltoid
• Origin:
– Clavicle, scapula
• Insertion:
– Deltoid tuberosity of
humerus
• Actions:
– Abduction
– Anterior deltoid: internal
rotation
– Posterior deltoid:
external rotation
Classifications of muscles that move
the shoulder
• A. muscles connecting scapula to humerus
• B. muscles connecting trunk to scapula
• C. muscles connecting trunk to humerus
B. muscles connecting trunk to scapula
1.
2.
3.
4.
5.
6.
Serratus anterior
Levator scapula
Rhomboid major
Rhomboid minor
Trapezius
Pectoralis minor
Serratus Anterior
• Origin:
– Ribs
• Insertion:
– Medial border of
scapula
• Actions:
– Protraction and
rotation of
scapula
• Origin:
– Cervical
vertebrae
• Insertion:
– Scapula
• Action:
– Elevation of the
scapula
Levator scapula
Rhomboid major and minor
• Origin:
– Cervical and
Thoracic
vertebrae
• Insertion:
– Scapula
• Actions:
– Retraction
– Elevation
Trapezius
• Origin:
– Occipital bone of skull,
cervical and thoracic
vertebrae
• Insertion:
– Clavicle and Scapula
• Actions:
– Elevation
– retraction
Pectoralis Minor
• Origin:
– Ribs
• Insertion:
– Coracoid process
of scapula
• Action:
– Depression of
scapula
Classifications of muscles that move
the shoulder
• A. muscles connecting scapula to humerus
• B. muscles connecting trunk to scapula
• C. muscles connecting trunk to humerus
C. muscles connecting trunk to humerus
• Pectoralis major
• Latissimus dorsi
Pectoralis Major
• Origin:
– Clavicle, sternum, upper
ribs
• Insertion:
– Crest of greater tubercle
and lat lip
• Action:
– Add, med rotation
Latissimus Dorsi
• Origin:
– Vertebrae, sacrum,
ilium
• Insertion:
– Medial lip
• Actions:
– Adduction and med
rotation of humerus
Latissimus Dorsi if humerus is fixed
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Covering th front and back of the trunk.
The pectoralis major and latissimus dorsi both adduct and medially rotate the
Humerus.