Upper Limb 6.48
Head of the Radius
1
2 34
5
6
Head of the Radius
1. humerus
2. capitulum
3. head of the radius
4. anular ligament
5. neck of the radius
6. ulna
Subluxation and dislocation of the head of the radius, also
known as nursemaid’s elbow or pulled elbow, is common
in children who are suddenly lifted by the upper limb.
© 2014 Lippincott Williams & Wilkins
Upper Limb 6.49
Lateral Aspect of the Hand
12
34
5
6
Lateral Aspect of the Hand
1. adductor pollicis
2. 1st dorsal interosseous
3. extensor pollicis brevis
4. extensor pollicis longus
5. styloid process of the radius
6. radial artery
Fracture–separation of the distal radial
epiphysis is common in children because
of frequent falls.
Skier’s thumb refers to the chronic laxity
of the collateral ligament of the 1st
metacarpophalangeal joint, resulting in
hyperabduction. Bull rider’s thumb is a
sprain of the radial collateral ligament
and fracture of the proximal phalanx of
the thumb.
© 2014 Lippincott Williams & Wilkins
Upper Limb 6.50
Superficial Posterior Forearm
Musculature
1
2
3
4
5
6
Superficial Posterior Forearm
Musculature
1. anconeus
2. extensor digitorum
3. extensor carpi ulnaris
4. abductor pollicis longus
5. extensor pollicis brevis
6. extensor retinaculum
Extensor Digitorum
• proximal attachment: lateral epicondyle of humerus
• distal attachment: extensor expansions of medial four digits
• innervation: posterior interosseous nerve (radial nerve)
• main action: extends medial four digits and wrist
Extensor Carpi Ulnaris
• proximal attachment: lateral epicondyle of humerus
• distal attachment: 5th metacarpal
• innervation: posterior interosseous nerve (radial nerve)
• main action: extends and adducts wrist
© 2014 Lippincott Williams & Wilkins
Upper Limb 6.51
Deep Posterior Forearm Musculature
2 3
1
4
5
76
Deep Posterior Forearm Musculature
1. posterior interosseous artery and nerve
2. supinator
3. extensor carpi radialis brevis
4. abductor pollicis longus
5. extensor pollicis brevis
6. extensor pollicis longus
7. extensor indicis
Abductor Pollicis Longus
• proximal attachment: ulna, radius, and interosseous
membrane
• distal attachment: 1st metacarpal
• innervation: posterior interosseous nerve
• main action: abducts thumb
Extensor Indicis
• proximal attachment: ulna and interosseous membrane
• distal attachment: extensor expansion of 2nd digit
• innervation: posterior interosseous nerve
• main action: extends 2nd digit
© 2014 Lippincott Williams & Wilkins
7 • Head
7.1 Skull, Anterior View
7.2 Skull, Lateral View
7.3 Skull, Inferior View
7.4 Scalp
7.5 Cranial Base, Internal View
7.6 Dural Folds
7.7 Dural Sinuses
7.8 Tentorial Notch
7.9 Meninges
7.10 Brain
7.11 Subarachnoid Spaces and Ventricles
7.12 Arterial Supply to the Brain
7.13 Facial Musculature, Lateral View
7.14 Facial Nerve on the Face
7.15 Nerves of the Face
7.16 Arteries of the Face
7.17 Veins of the Face
7.18 Parotid Gland
7.19 Orbit
7.20 Eyelids
7.21 Conjunctiva
7.22 Retina
7.23 Anterior Aspect of the Eye
7.24 Eye
7.25 Extraocular Muscles 1
7.26 Extraocular Muscles 2
7.27 Extraocular Muscles 3
7.28 Arteries of the Orbit
7.29 Infratemporal Fossa
7.30 Temporomandibular Joint
7.31 Temporalis
7.32 Deep Temporal Region
7.33 Oral Cavity
7.34 Muscles of the Oral Cavity
7.35 Hard Palate
7.36 Teeth
7.37 Tongue
7.38 Salivary Glands
7.39 Nasal Septum
7.40 Nasal Cavity
7.41 Paranasal Sinuses
7.42 External Ear
7.43 Middle Ear
Head 7.1
Skull, Anterior View
1
2
3
45
6
Skull, Anterior View
1. superciliary arch
2. nasal bone
3. zygomatic bone
4. maxilla
5. infraorbital foramen
6. intermaxillary suture
A blow to the superciliary arch may cause a laceration and a
black eye.
Malar flush refers to the redness of the skin over the zygomatic
prominence. It is associated with fever.
The three common maxillary fractures as described by Le Fort
are numbered I, II, and III.
Le Fort I
Le Fort II Le Fort III
© 2014 Lippincott Williams & Wilkins
Head 7.2
Skull, Lateral View
1
2
3
4
5
6
Skull, Lateral View
1. bregma
2. pterion
3. temporal bone – squamous portion
4. external auditory meatus
5. styloid process
6. mandible – angle
Fractures of the mandible usually occur in pairs, frequently on
opposite sides. A, fracture of the coronoid process; B, fracture
of the neck; C, fracture of the angle; D, fracture of the body.
Extraction of teeth causes resorption of alveolar bone. The
mandible shrinks, occasionally leaving the mental foramen
open and the nerves exposed to pain from dentures.
A
B
C
D
© 2014 Lippincott Williams & Wilkins
Head 7.3
Skull, Inferior View
1 2
10
3
4
5
6
7
8
9
Skull, Inferior View
1. incisive foramen
2. vomer
3. lateral pterygoid plate
4. foramen ovale
5. foramen lacerum
6. styloid process
7. stylomastoid foramen
8. jugular foramen
9. superior nuchal line
10. external occipital protuberance
© 2014 Lippincott Williams & Wilkins