MSK/Derm

Question 1

Unhappy Triad

Answer 1

Common injury in contact sports due to lateral force applied to a planted leg. Classically, consists of damage to the ACL, MCL, and medial meniscus (attached to MCL); however, lateral meniscus injury is more common

Question 2

Rotator cuff muscles

Answer 2

Supraspinatus - abducts
Infraspinatus - laterally rotates
teres minor - adducts and laterally rotates arm
Subscapularis - medially rotates and adducts arm

Question 3

Wrist bones

Answer 3

Scaphoid, Lunate, Triquitrum, Pisiform, Hamate, Capitate, Trapezoid, Trapezium. (So Long To Pinky, Here Comes The Thumb)

Question 4

Brachial plexus lesions

Answer 4

FA 413

Question 5

Lower extremity nerves

Answer 5

FA 416

Question 6

Lab values in bone disorders

Answer 6

FA 421

Question 7

Osteoarthritis vs Rheumatoid arthritis

Answer 7

FA 424

Question 8

Sjogren syndrome

Answer 8

Autoimmune disorder characterized by destruction of exocrine glands (especially lacrimal and salivary). Predominantly affects females 40-60 years old.
Findings: Xerophthalmia (dec tear production and subsequent corneal damage), Xerostomia (dec saliva prod), Presence of antinuclear antibodies: SS-A and/or SS-B, Bilateral parotid enlargement.

Question 9

Seronegative spondyloarthropathies

Answer 9

FA 426. Arthritis without rheumatoid factor. Strong association with HLA-B27 (gene that codes for HLA MHC class I). Occurs more often in males PAIR (Psoritic arthrits, Ankylosing spondylitis, Inflammatory bowel disease, Reactive arthritis)

Question 10

Polymyositis/dermatomyositis

Answer 10

FA 429