<prompt> Triple deformity of knee includes all EXCEPT:Posterior subluxation of tibiaMedial rotation of tibiaLateral rotation of tibiaFlexion  <response>: Ans. b Medial rotation of tibiaRef: Practical Orthopedics, 2th ed. 173 Tuberculosis of the knee is classical cause of triple deformity. It includes: Flexion Lateral external rotation of tibia Posterior subluxation of tibia Better treatment results are seen with ATT and arthrodesis This condition can also be seen in Rheumatoid arthritis. 