Which of the following is a feature of triple deformity of the knee joint?: (A) Posterior subluxation of tibia, (B) internal rotation of tibia, (C) Medial angulation of tibia, (D) Recurvatum
Answer is A. Triple deformity of knee refers to:-Flexion of kneeExternal rotation of the tibiaPosterior subluxation of the tibiaThe triple deformity is seen in RA, TB of knee and Polio(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 528)