The invention discloses a patella inferior pole fracture internal fixing device and a screw fixing method, the patella inferior pole fracture internal fixing device comprises an arc-shaped fixing plate, the arc-shaped fixing plate is attached to a patella; effectively wraps and fixes the subpatellar comminuted
fracture block and limits the displacement of the subpatellar comminuted
fracture block,and meanwhile, tightly contacts the patella body with the subpatellar comminuted
fracture block and pressurizes and fixes the patellar body; the locking between the screw and the steel plate can effectively improve the pull-out resistance of the screw, so that the stability of the fracture block and the
internal fixation device is further enhanced, and the looseness and failure of
internal fixation are reduced; besides, suture
tension reduction protection can be achieved, suture
tension reduction stress and patellar
ligament traction fracture block stress are kept in
dynamic balance, fractureblock displacement or
internal fixation failure during early knee bending movement is effectively avoided, meanwhile, damage interference to patellar tendons can be relieved, the
tension band principle is considered, the mechanical principle is better met. And a more effective internal fixation choice is provided for treating patella inferior pole fracture, especially comminuted patella inferiorpole fracture.