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Nerves

Nerves. Brachial Plexus. Roots. C5. C6. C7. C8. T1. Brachial Plexus. Trunks. C5. Upper Trunk. C6. Middle Trunk. C7. C8. Lower Trunk. T1. Brachial Plexus. Divisions. Eash trunk gives anterior and posterior divisions (behind middle ⅓ of the clavicle ). C5. C6. C7. C8. T1.

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Nerves

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  1. Nerves

  2. Brachial Plexus Roots C5 C6 C7 C8 T1

  3. Brachial Plexus Trunks C5 Upper Trunk C6 Middle Trunk C7 C8 Lower Trunk T1

  4. Brachial Plexus Divisions Eash trunk gives anterior and posterior divisions(behind middle ⅓ of the clavicle ) C5 C6 C7 C8 T1

  5. Brachial Plexus Cords C5 C6 C7 C8 T1 Posterior Cord

  6. Brachial Plexus Cords C5 C6 C7 Medial Cord C8 T1 Posterior Cord

  7. Brachial Plexus Cords Lateral Cord C5 C6 C7 Medial Cord C8 T1 Posterior Cord

  8. Brachial Plexus Lateralpectoral Lateral Cord Branches Lateral rootof Median n. Musculocutaneous

  9. Brachial Plexus Medial Cord Branches Medial Pectoral Medial Rootof Median Medial Cutaneousn. of Forearm Ulnar

  10. Brachial Plexus UpperSubscapular Posterior Cord Branches LowerSubscapular Axillary N. To LatissimusDorsi Radial

  11. Brachial Plexus Upper Trunk Branches Suprascapular Nerve to Subclavius

  12. Root ofPhrenic N. ToRhomboids N. toSerratusAnterior Brachial Plexus Roots Branches C5 C6 C7 C8 T1

  13. Brachial Plexus Injuries 1.Complete Injury

  14. Brachial Plexus Injuries 2.Erb’s Injury

  15. Brachial Plexus Injuries 3.Klumpke’s Injury

  16. MusculocutaneousNerve Mixed nerve from the lateral cord Course: Lareral: the 3rd part of Axillary artery Leaves the axilla by piercing the coracobrachialis m. Then descends downwards between biceps and brachialis. Finally continues as lateral cutaneous nerve of the forearm Branches:Coracobrachialis, Biceps & Brachialis

  17. long headof Triceps Brachial artery Radial Nerve C5,6,7,8,T1 Course & Relations: Arm Lies behind the upper part of the brachial artery between it & the 2 heads of triceps

  18. Radial Nerve C5,6,7,8,T1 Course & Relations: Arm After leaving the spiral groove:The nerve pierces the lateral intermuscular septum to enter the anterior compartment on the lateral side of the arm

  19. Radial Nerve C5,6,7,8,T1 Course & Relations: Forearm In front of the lateral epicondyleit gives the posterior interosseous & continues downwards as the superficial radial nerve. Supinator

  20. Radial Nerve C5,6,7,8,T1 Course & Relations: Forearm Nerve winds around the lateral side of the radius to reach the back of the hand cross over the anatomical snuff box

  21. Median Nerve Formed by:branches from medial & lateral cords(C6, 7, 8 & T1) Brachial artery Crosses the brachial artery

  22. Median Nerve Course Lies medial to biceps, Biceps Mediannerve Ulnarnerve

  23. Median Nerve In the arm:gives no branches Course Lies medial to biceps, anterior to brachialis & triceps Brachialis Mediannerve Triceps Ulnarnerve Triceps

  24. Median Nerve Passes bet 2 heads of pronator teres Course deep to flexor digitorum superficialis BetweenFlexor Pollicis Longus &Flexor Digitorum Superficialis Lies onFlexor Digitorum Profundu deep to flexor retinaculum

  25. Median Nerve Branches Supplies flexors of the forearm FlexorCarpi-Ulnaris Medial ½Flexor DigitorumProfundus Except

  26. AbductorPollicisBrevis Median Nerve OpponensPollicis Branches FlexorPollicisBrevis All Thenar Ms. ExceptAdductor Pollicis 1st & 2ndLumbricals

  27. Median Nerve Branches PalmarCutaneousNerve of Palm

  28. Median Nerve Branches Palmar surface of lateral 3 ½ digits

  29. Median Nerve Injury ApeHandDeformity

  30. Ulnar Nerve Terminal branch ofthe medial cord of the brachial plexus

  31. Ulnar Nerve NOBRANCHES INARM Passes through posterior compartment of the arm(behind the medial epicondyle ) Ulnarnerve Mediannerve

  32. Ulnar Nerve Enters between the heads of flexor carpi ulnaris FlexorCarpi ulnaris FlexorDigitorumProfundus

  33. Ulnar Nerve In the ForearmSupplies: FlexorCarpi ulnaris Medial ½FlexorDigitorumProfundus

  34. Ulnar Nerve Ends by dividing into: 1. Superficial Branch Superficial Branchabove Retinaculum 1 ½ fingers

  35. Ulnar Nerve • Ends by dividing into: • Superficial Branch • Deep Branch AllHypothenar muscles AdductorPollicis AllInterossei 3rd & 4thLumbricals

  36. Sciatic Nerve Roots It arises from:L4 – S3 L4 L5 S1 S2 S3 Sciaticnerve

  37. Sciatic Nerve Extent Piriformsmuscle Sciaticnerve Inferior border of PiriformstoLower 1/3 of the thigh

  38. Sciatic Nerve Course & Branches Leaves pelvisthroughGreater Sciatic foramen Sciaticnerve

  39. Sciatic Nerve Adductor Magnus Biceps femoris Semitendinosis Semimembranosus

  40. Sciatic Nerve • Divides into: • Tibial nerve • Common Peroneal nerve Sciaticnerve CommonPeronealnerve Tibialnerve

  41. Sciatic Nerve Tibial Supplies SuperficialPosterior Compartment of leg Tibial SuppliesMuscles of the foot

  42. Sciatic Nerve Common Peroneal LateralSuralnerve Common Peroneal Supplies AnteriorCompartment of leg

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