Carpal tunnel syndrome - with inverted notch sign
Tingling in fingers - Few wks.
Loading Stack -
0 images remaining
There is bifercation of median nerve before carpal tunnel. It is a normal variant.
Absence of persistant median artery is noted.
Combined Cross sectional area of two branches - Normal combined upto 11 mm
Proximal to tunnel - Ulnar division - 3 mm + radial division - 3 mm - Total - 6 mm
Distal to tunnel - Ulnar division - 8 mm + radial division - 6 mm - Total - 14 mm
Tapering is seen distal to tunnel in both divisions - Called as inverted notch sign
No mass lesion is seen.
No tenosynovitis is seen.
Nerve Tapering is seen distal to tunnel in both ulnar and radial divisions - Called as inverted notch sign.
- Ultrasound of the musculoskeletal system. S. Bianchi and C. Martinoli. 1st Indian reprint 2k7