MSK, Skin and CT

Question 1

female pt presents w rash, joint pain, fever and photosensitivity:
Diagnosis?
associated condition?

Answer 1

SLE

Libman-Sacks endocarditis

Question 2

loss of function mutation causing melanoma?

Gain of function?

Answer 2

CKDN

BRAF

Question 3

wc muscle and nerve abduct the arm at the following degrees?
0-15
15-100
>90
>100

Answer 3

0-15 - Supraspinatus - Suprascapular
15-100 - Deltoid - Axillary
>90 - Trapezius - Accessory
>100 - Serratus Anterior - Long Thoracic (SALT)

Question 4

damage to what nerve causes a winged scapula?

muscle involved?

Answer 4

long thoracic (C5-C7)

Serratus anterior

Question 5

wt fingers will be affected in ulnar nerve damage?

where will sensation be lost?

Answer 5

4, 5

hypothenar eminence loss of sensation