Neuroanatomy JANUSZ BONKOWSKI Nerve Root functional anatomy About - - PowerPoint PPT Presentation

▶
neuroanatomy
SMART_READER_LITE
LIVE PREVIEW

Neuroanatomy JANUSZ BONKOWSKI Nerve Root functional anatomy About - - PowerPoint PPT Presentation

Nov 09, 2023 447 likes •734 views

Clinical Neuroanatomy JANUSZ BONKOWSKI Nerve Root functional anatomy About the right amount More than you would about Myotomes. ever want to know about Dermatomes. (And an easy way to (And how important are remember them)

slide-1
SLIDE 1

Clinical Neuroanatomy

JANUSZ BONKOWSKI

slide-2
SLIDE 2

Nerve Root functional anatomy

 More than you would

ever want to know about Dermatomes.

 (And how important are

they anyway?)

 About the right amount

about Myotomes.

 (And an easy way to

remember them)

slide-3
SLIDE 3

MRC Aids to the examination of peripheral N Keegan &Garrett

slide-4
SLIDE 4
slide-5
SLIDE 5

Sir Henry Head The London Hospital

Sensory loss after division of the Superficial Radial Nerve.

slide-6
SLIDE 6
slide-7
SLIDE 7
slide-8
SLIDE 8
slide-9
SLIDE 9

Otfrid Foester Breslau (now Wroclaw)

slide-10
SLIDE 10
slide-11
SLIDE 11
slide-12
SLIDE 12
slide-13
SLIDE 13

“ I need not discuss here the circumstances under which such a selected procedure may be undertaken” Forster,O Brain 1933

slide-14
SLIDE 14

Forster in USSR 1922

slide-15
SLIDE 15
slide-16
SLIDE 16

KEEGAN & GARRETT (1948) Dermatomes based on nerve root entrapment syndromes in disc prolapse patients.

slide-17
SLIDE 17
slide-18
SLIDE 18
slide-19
SLIDE 19
slide-20
SLIDE 20
slide-21
SLIDE 21
slide-22
SLIDE 22

Peripheral nerve sensory distribution charts are more “precise” than Dermatome charts as the boundaries are more defined.

slide-23
SLIDE 23

Peripheral nerve lesions cause a variable area of sensory loss but it tends to be more dense than dermatomal loss and there is little overlap between peripheral nerves.

slide-24
SLIDE 24

Myotomes: memorise this or ….

slide-25
SLIDE 25

Simple guide to Myotomes (with exercises) J.Last

slide-26
SLIDE 26

Upper limb takes a bit more work

slide-27
SLIDE 27

There is considerable overlap between dermatomes Nerve Root compression pain is usually sclerotomal so does not follow dermatomal lines. Although most motor actions involve more than one myotome individual root compression can cause profound motor deficits: Footdrop after L5 crush Triceps weakness after C7 compression Intrinsic muscle of hand with T1 lesion