MSK

Question 1

Signs of an aggressive bone lesion

Answer 1

• moth eaten or permeative bone lysis
• irregular periosteal new bone formation
• long zone of transition
• fast rate of progression

Question 2

Erosive vs non-erosive arthropathy

• is of what?
• signs

Answer 2

• subchondral bone

- subcondral bone lysis, altered joint space, frag, lux/sublux, secondary osteoarthrosis