Special tests for knee joint

SPECIAL  TESTS  FOR  KNEE  JOINT :- SPECIAL TESTS  FOR  ACL INJURY:- The  Anterior cruciate  ligament  provides anterior  stability  to knee joint . It's  main function  is to prevent anterior  movement   of  tibia on femur. THE CAUS OF  ACL  TEAR  IS HYPEREXTENSION  INJURY AS IN  FOOTBALL  PLAYERS. ŤESTS:- 1 ANTERIOR  DRAWER  TEST:- Patient lies  in supine lying  . The  hip joint  should  be  flexed  at 45° while  the knee joint   should  be  90° flexed. The  therapist  grasp  proximal  leg  just below  the  tibial plateu. The therapist  attempts to translate  lower leg  anteriorly . The  test will be positive  if there is excessive  movement of tibia as compare  to opposite  side. 2   LACHMAN   TEST  :-   IT  is  best  test  indicator  of   ACL  injury  specially  for  posterior  band. The  patient  lies   supine  with knee  flexed  at   30°.  This is functional  position  of  knee  joint  in which  the ACL plays a majorange  role. The  examiner