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Carpal Tunnel Syndrome: Multimedia
Updated: Apr 16, 2009
Multimedia
 | Media file 1: Carpal tunnel syndrome. Carpal and Guyon tunnels. Drawing showing the proximal level of the carpal tunnel delimited by the pisiform (P) and the scaphoid (S). The flexor retinaculum (medium gray region) forms the roof of the carpal tunnel and the floor of the Guyon tunnel. The palmar carpal ligament (dark gray region) forms the volar boundary of the Guyon tunnel. * = flexor pollicis longus tendon, * = flexor carpi radialis tendon. From Martinoli C, Bianchi S, et al. US of nerve entrapments in osteofibrous tunnels of the upper and lower limbs. Radiographics 2000; 20:S199-S217. Used by permission of the authors and RSNA. |
 | Media file 2: Carpal tunnel syndrome. Carpal and Guyon tunnels. Transverse 5-12-MHz ultrasound scan corresponding to Image 1 shows the proximal level of the carpal tunnel delimited by the pisiform (P) and the scaphoid (S). The flexor tendons and median nerve (MN) extend through the carpal tunnel, with the nerve lying palmar and radial. The flexor retinaculum (open arrowheads) forms the roof of the carpal tunnel and the floor of the Guyon tunnel. At the level of the pisiform, the ulnar nerve (U) courses medial to the ulnar artery (solid arrowhead) within the Guyon tunnel. * = flexor pollicis longus tendon. From Martinoli C, Bianchi S, et al. US of nerve entrapments in osteofibrous tunnels of the upper and lower limbs. Radiographics 2000; 20:S199-S217. Used by permission of the authors and RSNA. |
 | Media file 3: Carpal tunnel syndrome. Carpal and Guyon tunnels. Drawing showing the distal level of the carpal tunnel delimited by the hook of the hamate (H) and the tubercle of the trapezium (T). The flexor retinaculum (medium gray region) forms the roof of the carpal tunnel. From Martinoli C, Bianchi S, et al. US of nerve entrapments in osteofibrous tunnels of the upper and lower limbs. Radiographics 2000; 20:S199-S217. Used by permission of the authors and RSNA. |
 | Media file 4: Carpal tunnel syndrome. Carpal and Guyon tunnels. Transverse 5-12-MHz ultrasound scan corresponding to Image 3 shows the distal level of the carpal tunnel delimited by the hook of the hamate (H) and the tubercle of the trapezium (T). The flexor retinaculum (open arrowheads) forms the roof of the carpal tunnel. The flexor tendons and median nerve (MN) extend through the carpal tunnel, with the nerve lying palmar and radial. At the level of the pisiform, the ulnar nerve courses medial to the ulnar artery (solid arrowhead) within the Guyon tunnel. At the level of the hamate, the ulnar nerve divides into two terminal branches, a deep motor branch (curved arrow) and a superficial sensory branch (straight arrow). From Martinoli C, Bianchi S, et al. US of nerve entrapments in osteofibrous tunnels of the upper and lower limbs. * = flexor pollicis longus tendon. Radiographics 2000; 20:S199-S217. Used by permission of the authors and RSNA. |
 | Media file 5: Carpal tunnel syndrome. Normal findings on an axial spin-echo T1 MRI of the carpal tunnel showing the intermediate signal intensity of the median nerve (arrow). |
 | Media file 6: Carpal tunnel syndrome. Normal findings of isointense-to-hypointense appearance of the median nerve on fast spin-echo T2-weighted MRI (arrow). Note the fairly well-defined nerve fascicles within the median nerve sheath. |
 | Media file 7: Carpal tunnel syndrome. Axial fast spin-echo T2-weighted MRI with fat saturation. Note the increased T2-weighted signal within the median nerve (arrow). A slightly increased cross sectional area of the nerve is noted but the nerve architecture is preserved, consistent with early or mild inflammation. |
 | Media file 8: Carpal tunnel syndrome. Fast spin-echo T2-weighted MRI illustrates more pronounced increased signal within the median nerve (arrow). Note the small amount of fluid within the carpal tunnel, a secondary sign of inflammation. Slightly less optimal fat saturation is noted than on other images, which is a common occurrence. |
 | Media file 9: Carpal tunnel syndrome. Axial fast spin-echo T2-weighted MRI with greater increase in signal and loss of definition within the nerve (arrow). Inflammatory change is noted within the carpal tunnel, adjacent to the flexor digitorum superficialis tendons. The appearance is consistent with pronounced inflammatory change within the carpal tunnel. |
More on Carpal Tunnel Syndrome |
| Overview: Carpal Tunnel Syndrome |
| Imaging: Carpal Tunnel Syndrome |
| Follow-up: Carpal Tunnel Syndrome |
 Multimedia: Carpal Tunnel Syndrome |
| References |
| Further Reading |
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References
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Further Reading
Related eMedicine topics
Carpal Tunnel Syndrome (Emergency Medicine)
Carpal Tunnel Syndrome (Physical Medicine and Rehabilitation)
Carpal Tunnel Syndrome (Orthopedic Surgery)
Clinical guidelines
AAOS Clinical Practice Guidelines (CPG)
Guideline on the Treatment of Carpal Tunnel Syndrome
Guideline on the Diagnosis of Carpal Tunnel Syndrome
Carpal Tunnel Syndrome: Diagnosis and Treatment Trial
Post-Operative Mobilization for Carpal Tunnel Syndrome
Effect of Lumbrical Stretching on Carpal Tunnel Syndrome
Treatment Efficacy of OMT for Carpal Tunnel Syndrome
Treatment of Carpal Tunnel Syndrome With Dynamic Splinting
Steroid Injection Treatment of Carpal Tunnel Syndrome
Corticosteroid Injection as a Predictor of Outcome in Carpal Tunnel Release
Keywords
carpal tunnel syndrome, median nerve injury, wrist injury, repetitive stress syndrome, carpus, carpal bone, flexor retinaculum, traverse carpal ligament, scaphoid tubercle, trapezium, flexor digitorum, flexor tendons, flexor pollicis longus, flexor tenosynovitis
