Live Lecture: Introduction & Session 1

Straight leg test modifications

• Normal = sciatic nerve

• Inversion + DF = sural nerve (SID)

• Eversion + DF = tibial nerve (TED)

• Inversion + PF = common peroneal nerve (PIPe)

Describe motor and sensory presentation of an ulnar nerve pathology.

Tingling in the medial 1.5 fingers, weakness of finger abductors and adductors (PAD, DAB, interossei)

Describe motor and sensory presentation of a C8 radiculopathy.

• Motor: finger flexion, thumb extension

• Sensory: little finger

Describe motor and sensory presentation of a C7 radiculopathy.

• Motor: elbow extension, wrist flexion

• Sensory: middle finger

Describe motor and sensory presentation of a median nerve pathology.

• Motor: P-LOAF (pronators, lateral lumbricals 1 & 2, opponens pollicis, abductor pollicis brevis, wrist flexors except FCU and findger flexors

• Sensory: lateral 3.5 fingers

What is the difference between radiculopathy and neuropathy?

• Radiculopathy - root affected

• Neuropathy - peripheral nerve affected

Describe nerve roots of: musculocutaneous, axillary, racial, median, and ulnar nerves

• Musculocutaneous - C5-C7

• Axillary - C5-C7

• Radial - C5-T1

• Median - C5/C6-T1

• Ulnar - C7-T1

What are all the upper extremity dermatomes? In which pathology will this be affected?

• Radiculopathy

• C1 - vertex of skull (cap)

• C2 - temple, forehead, occiput (crown)

• C3 - entire neck, posterior cheek, temporal area, temporal area, prolongation forward under mandible (choker)

• C4 - shoulder area, clavicular area, upper scapular area (off shoulder top)

• C5 - deltoid area, anterior aspect of entire arm to base of thumb

• C6 - anterior arm, radial side of hand to thumb and index finger

• C7 - lateral arm and forearm to index, long, and ring fingers

• C8 - medial arm and forearm to long, ring, and little fingers

• T1 - medial side of forearm to base of little finger

• T2 - medial side of upper arm to medial elbow, pectoral, and midscapular areas

• T3-T6 - upper thorax

• T4-T7 - costal margin

• T8-T12 - abdomen and lumbar region

• L1 - back, over trochanter and groin (hip crease)

What are all the lower extremity dermatomes? In which pathology will this be affected?

• Radiculopathy

• L2 - back, front of thigh to knee (anterior thigh)

• L3 - back, upper buttock, anterior thigh and knee, medial lower leg (medial knee)

• L4 - medial buttock, lateral thigh, medial leg, dorsum of foot, big toe (medial malleolus)

• L5 - buttock, posterior and lateral thigh, lateral aspect of leg, dorsum of foot, medial half of sole, first, second, and third toes (dorsum of foot)

• S1 - buttock, thigh, and leg posterior (heel)

• S2 - same as S1 (popliteal fossa)

• S3 - groin, medial thigh to knee

• S4 - perineum, genitals, lower sacrum