image based Q. 142 - Brow blow

Q.    'Sourcil sign' is seen in ?

a. Cuff tear arthropathy
b. Calcific tendinitis
c. Adhesive capabilities
d. Avascular necrosis humeral head

Answer -
a

'Sourcil sign' is a radiological sign.
The erosion of undersurface if acromion leading to subacromial sclerosis (image below ).

Cuff tear arthropathy results from end stage rotator cuff tear disease.

Superior subluxation and shear forces of humeral head lead to articular degeneration.

Similar sign is also seen in cases of hip disorders causing impingement and leading to radiological sclerosis of acetabular margin.

'Sourcil' refers and translates into the word 'eyebrows'.

image based Q. 141 - Knocked out

Q.    'Boxer`s knuckle' results from injury to which of these?

a. Juncturae tendinum
b. Sagittal band
c. MCP joint
d. Extensor tendon
e. Osteochondral fracture

Answer -
b

Sagittal band rupture is also called Boxers knuckle.

It clinically presents as dropped finger as the band helps in MCP extension.

The injury is most commonly noted in middle finger and least in ring finger.