REIDER PART 1
56

146_Chapter 4_Hand and Wrist

likely to bc injurcd proximal to the wrist. This loss can be investigated by testing for light touch or sharp-dull sensation on the dorsum of the first web space (see Fig. 4-72C).

Laceration of the digital nerves is common. Transection of a digital nerve causes numbness on the same sidc of the finger as the injured nerve. This numbness is best detected by testing two-point discrimination on the appropriatc side of the volar fingertip (see Fig. 4-72D) Nerve laceration can also be detected by testing for loss of sweat by drawing a plastic pen or wooden pencil along the side of the finger with some downward force In the case of a nerve injury, the loss of sweat leads to reduced friction so that the pen glides as if it is on silk or satin. (Fig. 4-72E)

Special Tests

Tests for Nerve Compression Median Nerve

The most common nerve compression syndrome in the hand and wrist, and probably the most common nerve compression syndrome in the human body, is carpal tunnel syndrome, the compression of the median nerve within the carpal tunnel at the wrist. The base and sides of the carpal tunnel are a U-shaped bed of carpal bones; the roof is the transvcrsc carpal ligament, a thickening of the antebrachial fascia that connects the hook of the hamate with the tubercles of the scaphoid and trapezium. Through this tunnel runs the median nerve along with

Wyszukiwarka

Podobne podstrony:
REIDER PART 1
42 132 Chapter 4 Hand and Wrist Figurę 4-48. A, Opposition of the thumb. B, Lack of no
REIDER PART 1
14 104 Chapter4 Hand and Wrist Figurę 4-3. Paronychia (arrow). Dorsal Aspect The dorsa
REIDER PART 1
22 112 Chapter 4 Hand and Wrist Figurę 4-17. Cupping the hand. interphalangeal joints
REIDER PART 1
32 122 Chapter 4_Hand and Wrist Figurę 4-29, cont d. £, Ali four together. F, Simulate
REIDER PART 1
34 124 Chapter4 Hand and Wrist Figurę 4-34. A, Active radial deviation. B, Neutral. Fi
REIDER PART 1
40 130 Chapter 4 Hand and Wrist Figurę 4-42. A and B, Long finger abduction.A  &n
REIDER PART 1
50 140 Chapter 4__Hand and Wrist Figurę 4-57. Assessing overall finger flexor strcngth
REIDER PART 1
52 142 ■ Chapter 4 _ Hand and Wrist Figurę 4-63. Assessing First dorsal interosseous s
REIDER PART 1
54 144 Chapter 4 Hand and Wrist Figurę 4-68. Assessing thumb palmar adduction strength
REIDER PART 1
58 148 Chapter4 Hand and Wrist Figurę 4-75. A, Phalen’s test. B, Reverse Phalens test.
REIDER PART 1
64 154 Chapter 4_Hand and Wrist Figurę 4-87. A and B, The distal radioulnar joint comp
REIDER PART 1
66 156 Chapter 4_Hand and Wrist Figurę 4-91. A and B, Assessing capillary refill. howe
REIDER PART 1
24 114_Chapter 4_Hand and Wrist compared with the thumb. The hypothenar muscles includ
REIDER PART 1
36 126 Chapter.4 Hand and Wrist ■ — ----1 4-2 • W hen a patient complains of pain on t
REIDER PART 1
60 150 Chapter 4 Hand and Wrist laxity at thc MCP joint and notes the angle that the d
REIDER PART 1
16 106 CHAn t-R 4 Hand and Wrist Figurę 4-8. Looseness of dorsal skin. Wrist. The bump
REIDER PART 1
18 108 Charter 4_Hand and Wrist Figurę 4-11. Active extension to demonstrate extensor
REIDER PART 1
20 110 Chafier 4_Hand and Wrist Figurę 4-14. Swollen basilar joint (arrow). a number o
REIDER PART 1
26 116 Chapter 4 Hanc! and Wrist Figurę 4-21. A, Prominence of flexor carpi radialis (

więcej podobnych podstron