<prompt> Test used for prolapsed lumbar interveebral disc is-Active straight leg raising testLasegue testThomas testApleys grinding test  <response>: Essential ohopaedics , Maheshwari, 9th edition ,pg.no.255 Lasegue test is a modification of SL where the first the hip is lifted to 90deg with the knee bent . The knee is then gradually extended by the examiner, if nerve stretch is present ,it will not be possible to do so patient will experience pain in the back of thigh or leg. 