Scaphoid fracture at waist with retrograde blood supply. Which segment is most susceptible to avascular necrosis?

Surgery

Scaphoid fracture at waist with retrograde blood supply. Which segment is most susceptible to avascular necrosis?

A tender swelling in submandibular triangle is mostly likely diagnosed as

In transfacial proportions, the face Is divided into how many segments:

Specific for Ankylosing spondylitis is true?