Orthopaedics

Question 1

O’Donoghue’s triad/ terrible triad/ horrible triangle/ unhappy triad of knee

Answer 1

It involves:
1. Medial/ tibial collateral ligament
2. Anterior cruciate ligament
3. Medical meniscus

Question 2

Pseudogout

Answer 2

Elderly (F > M)
A/w hypothyroidism.
Large joints affected : knee.
Calcium pyrophosphate dihydrate crystals :
• Polygonal in shape.
• Positively birefringent.