This document discusses nerve pathology and interventions for nerve entrapments. It covers indications for diagnostic interventions like nerve blocks and hydrodissection. Examples of different nerve pathologies are provided along with cases showing muscle changes distal to the level of injury. Non-invasive interventions like nerve blocks and hydrodissection are described to help diagnose and treat entrapments like carpal tunnel syndrome while avoiding injury to nearby nerves.

3. Indications
What is normal?
Pathology
Interventions

4. Indications
Diagnostic Interventions
Nerve Muscle
Focal vs Diffuse
Block HD Release

5. What is normal?

6. Nerve

12. Pathology

16. Can we see Same findings by HRUS?

17. Muscle changes distal to level of injury / entrapment

18. Case 1

20. It has been observed that motor fascicles located in the
anterior superior region of the nerve innervate the
tibialis anterior, whereas motor fascicles innervating
the peroneus longus lie more posterior and inferior.

21. Case 2

23. Case 3

25. Case 4

27. Case 5

30. Case 6

32. Case 7

34. Case 8

36. Case 9

42. Case 10

45. Case 11

47. Case 12

48. https://www.youtube.com/watch?v=Pi-
vxWJqnZA&feature=youtu.be

49. Case 13

51. Case 14

53. Case 15

60. Case 16

66. Case 17

75. Interventions

76. Block
Hydrodissection  TRPV1
Release
CTS as an example

77. Avoid PCN INJURY

79. Proximal to
origin of the RTN