Avascular- Kienbock's

Question 1

Def.

Answer 1

• Avascular necrosis of the carpal lunate -> occasionally bilateral.

Question 2

Age

Answer 2

• Age group 20-40 (typically direct trauma -> FOOSH)

* Common is patients with medical conditions affecting blood supply

Question 3

Radiol Fx

Answer 3

• > lateral view is best for visualising crescent shape of lunate
• Diffuse osteoporosis of adjacent bones,
• cortical changes (irregular, flattened or collapsed),
• Decreased lunate size,
• density initially is increased with it later becoming patchy sclerosis.