The present invention provides an orthopedic external compression unit having a locking plate unit and a method for locking and compressing the fractured bones without contact and friction between plate and bone, wherein the locking plate unit comprises of a locking plate, an external apparatus and a holder, wherein the locking plate includes plurality locking holes and at least an elongated hole, wherein the holder is placed at the elongated hole. The holder is configured to hold the locking plate above the bone for enabling to make required movement of locking plate in horizontal direction. Accordingly, fastening the compressing unit using a non-locking screw to the plate converts the vertical movement of head-screw into horizontal movement of connecting rod of the compression unit, thereby enabling to move the plate along with one end of fractured bone towards the fractured site thus producing compression between the fractured bones.