Case Reviews (Week 5--Metten and Pham)

Question 1

Do dorsal or ventral rami contribute to nerve plexuses?

Answer 1

Only ventral rami contribute to nerve plexuses (sacral, lumbar, cervical, brachial)

Both innervate segmental pattern

Question 2

If you have a distal humerus fracture, will your triceps be impaired?

Answer 2

No because branches from the radial nerve to innervate the triceps have already branched off

Question 3

Radial tunnel syndrome vs. radial nerve compression in the mid-arm

Answer 3

No damage to extensor carpi radialis longus in radial tunnel syndrome because no damage to radial nerve until past where branch to extensor carpi radialis longus is

Radial tunnel syndrome = posterior interosseus nerve syndrome

Question 4

In primary vs. secondary bone healing, which stage is different?

Answer 4

Second stage, reparative stage is different (primary healing is just periosteum –> osteoblasts –> bony collar but secondary healing is hematoma –> granulation tissue –> soft callus (cartilage) –> bone callus)

First and third stages (inflammation and remodeling) are same