Triple deformity of knee is classically seen in:: (A) Fracture patella, (B) Tuberculosis, (C) Rheumatic ahritis, (D) Ankylosing spondylitis
Answer is B. Triple deformity is seen in tuberculosis of knee consists of ( Mnemonic PErF ):- P- Posterior subluxation of tibia Er- External rotation of leg F- Flexion at knee