Nerve Root Lesions

NR-Muscle-Test-Reflex

… C5 - Deltoid - Shoulder abduction - biceps tendon (antecubital)

… C6 - Ext. Carp. Rad - Wrist extension - brachioradialis tendon (wrist/radial)

… C7 - Flex. Carp. Rad. - Wrist flexion - Triceps tendon (elbow)

… C7 - Ext. Dig. Comm - Finger extension - Triceps tendon (elbow)

… C8 - Flex. Dig. - Finger flex. - None

… T1 - Interossei - Finger adduction and abduction - None

… L4 - Tibialis Anterior - Foot inversion - Patellae tendon (knee)

… L5 - Extensor Dig. Long. - Foot dorsiflexion - None (tibialis posterior reflex?)

… S1 - Peronei - Foot eversion - Achilles Tendon (ankle)

Upper Extremity Peripheral Nerve Injuries

Test-Muscle-Nerve

… Shoulder Abduction - Supraspinatus (C5) - Suprascapular nerve  (C5, 6)

… Shoulder Abduction - Deltoid (C5) - Axillary nerve (C5, 6)

… Elbow Flex. - Biceps Brach (C5, 6) - Musculocutaneous nerve

… Elbow Ext. - Triceps (C7) - Radial nerve

… Wrist Extension (rad. dev.) - Ext. Carp. Rad. (Lg & bs) (C6) - Radial nerve

… Wrist Extension (Ulnar dev.) - Ext. Carp. Uln. (C7) - Radial nerve

… Wrist Flex. (Radially) - Flex. Carp. Rad. (C7) - Median nerve

… Wrist Flex. (Ulnar dev.) - Flex. Carp. Uln. (C8) - Ulnar nerve

… Finger extension - Ext. Dig. Comm (C7) - Radial nerve

… Finger Flex. - Flex.Dig.Sup. + Flex.Dig.Prof.Rad 2 (C8) - Median nerve

… Finger Ext. - Flex. Dig. Prof. Uln. 2 (C8) - Ulnar nerve

… Finger Abduction - 2 Rad. Lumbricals (T1) - Median nerve

… Finger Abduction and Adduction - 2 ulnar Lumbricals and dorsal, palmar interossei (T1) - Ulnar nerve

Lower Extremity Peripheral Nerve Injuries

Test-Muscle-Nerve

… Hip Flexion - Iliopsoas (T12, L1, 2, 3) - none

… Knee Extension - Quadriceps (L2, 3, 4) - Femoral Nerve

… Hip Adduction - Add. Brev.., Long., Magn. (L2, 3, 4) - Obturator nerve

… Foot Inversion - Tibialis Anterior (L4) - Deep peroneal nerve/Comm. Per./Sciatic

… Foot Dorsiflexion - Tib. Ant. (L4) - Deep peroneal nerve/Comm. Per./Sciatic

… All small toes up - Ext. Dig. Long. (L5) - Deep peroneal nerve/Comm. Per./Sciatic

… Big toe up - Ext. Hall. Long (L5) - Deep peroneal nerve/Comm. Per./Sciatic

… Hip abduction - Glut. Medius (L5) - Superficial gluteal nerve

… Foot eversion - Peroneus long., Brev. (S1) - Sup. Per. Nerve/Comm. Per./Sciatic

… Foot Plantarflexion - Gastrocnemius & soleus (S1) - Tibial nerve/sciatic nerve

… Foot Plantarflexion - Flex. Dig. Long. (S1) - Tibial nerve/Sciatic nerve

… Foot Plantarflexion - Flex. Hal. Long. (S1) - Tibial nerve/Sciatic nerve

… Foot Plantarflexion - Tibialis Post. (S1) - Tibial nerve/Sciatic nerve

… Hip Extension - Glut. Max. (S1) - Inferior Gluteal nerve