Sensory Impairment

DORSAL ROOT LESION

Ulnar

Ulnar

Median

Iliohypogastric X Ilioinguinal Lumboinguinal

A Iliohypogastric (iliac branch)

LESION LOCALISATION (contd)

Loss of all sensory modalities in dermatome distribution

Trigeminal nerve

Obturator

Ophthalmic branch Maxillary branch > Mandibular branch

Cervical cutaneous nerve Supraclavicular nerves Axillary nerve

Medial brachial cutaneous Intercostobrachial cutaneous Posterior brachial cutaneous (branch of radial nerve) Medial antebrachial cutaneous Lateral antebrachial cutaneous ¡Musculocutaneous)

Radial

Lateral femoral cutaneous

Anterior femoral cutaneous (femoral)

Common peroneal Saphenous Superficial peroneal

. Deep peroneal

Loss of all or some modalities in peripheral nerve distribution

DORSAL ROOT LESION

Greater occipital nerve

Lesser occipital nerve

Greater auricular nerve

Cervical cutaneous nerve

Posterior rami of cervical nerves

Posterior supraclavicular nerve

Axillary nerve Intercostobrachial cutaneous nerve Medial brachial cutaneous nerve Posterior brachial cutaneous (branch of radial nerve) Med. f antebrachial Post.\ cutaneous n. Lateral antebrachial cutaneous (musculocutaneous) n. Superficial radial nerve Median Lateral femoral cutaneous Anterior femoral nerve cutaneous nerve Posterior femoral cutaneous

^ Obturator nerve

^ Common peroneal nerve Superficial peroneal nerve Saphenous nerve Sural nerve

Tibial nerve Lateral plantar nerve Medial plantar nerve

PERIPHERAL NERVE LESION

DIFFERENTIAL DIAGNOSIS -as for limb weakness - page 194

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