<prompt> Triple deformity of knee includes following except-Flexion of kneeExternal rotation of tibiaPosterior subluxation of tibiaExtension of knee  <response>: Ans. is d i.e., Extension of knee o Triple deformity1 of knee refers to : -Flexion of kneeExternal rotation of tibiaPosterior subluxation of tibiao Triple deformity is seen in RA, TB of knee and Polio. 