<prompt> Trendelburg test would be positive in the following conditions-L4-L5 PIDL5-S1 PIDSynovitis of the HipFemoroacetabular Impingement Syndrome  <response>: L4 L5 PID would compromise the L5 nerve root. The myotome supplying the abductors of the hip is L5 Gluteus medius and gluteus minimus is supplied by superior gluteal nerve L4 L5 S1 Thus due to weakness of abductor mechanism The trendelenburg test would be positive. REF:Ref: Maheshwari 9the p.340 