the neck: musculature and bony anatomy. bony framework 7 cervical vertebrae atlas (c1) axis (c2)...
TRANSCRIPT
The Neck:Musculature and Bony
Anatomy
Bony Framework 7 cervical vertebrae
Atlas (C1)Axis (C2)C3 - C7
Atlas 1 – Articular process 2 – Transverse process 3 – Posterior arch
Axis 1 – Dens/Odontoid process 2 – Spinous process
Cervical Vertebra 1 – Transverse foramen 2 – Body 3 – Vertebral foramen 4 – Transverse process 5 – Spinous process 6 – Articular process
Palpation of bony anatomy Spinous process; vertebra prominens (C7) Transverse process
Palpation of Bony Anatomy Hyoid bone Clavicle
Thyroic cartilage Cricoid cartilage
Intervertebral Discs Annulus fibrosus Nucleus pulposus Shock absorbers for spine
Nerves of the Cervical Spine 7 vertebrae, but 8 nerves Emerge above corresponding vertebra, except C8
nerve Brachial plexus – C5-T1 Myotomes and Dermatomes
NERVE MYOTOME
C5 Shoulder Abduction
C6 Elbow Flexion, Wrist Extension
C7 Elbow Extension, Wrist Flexion
C8 Thumb Extension, Ulnar Deviation
Muscles of the NeckMUSCLE ORIGIN INSERTION ACTION
Trapezius Occiput, Nuchal ligament, SP of C7-T12
Lateral clavicle, Acromion, Spine of scapula
Extends, Ipsi lateral flex, Contra rotation
Levator Scapulae TP C1-C4 Medial border of scapula
Extends, Ipsi lateral flex, elevate scapula
Sternocleidomastoid Sternal: manubrium Clavicular: medial 1/3 of clavicle
Mastoid process Flexes, Ipsi lat flex, Contra rotation
MUSCLE ORIGIN INSERTION ACTION
Anterior Scalene TP C3-C6 1st rib Ipsi lat flex, Elevate 1st rib
Middle Scalene TP C2-C7 1st rib Ipsi lat flex, Elevate 1st rib
Posterior Scalene TP C5-C7 2nd rib Lat flex, Elevate 2nd rib
Longus Colli and Longus Capitus
Ant TP C1-C6 Occiput Flexion
Rectus Capitis TP C1 Occiput Flexion, Lat flexion
The Neck:Common Injuries and
Problems
Pain Generators Myogenic Discogenic Facet joint, Arthritic Stenotic (central canal, neuroforamen) Neurogenic
Questions??