Treatment Of Distal Femoral Fractures By Internal Fixation With The Less Invasive Stabilization System (LISS)

Objective:To explore the clinical result of fixation on the distal femur fracture with LISS(Less Invasive Stabilization System),and to analyze the related factors during the operation.Methods:From oct.2006 to mar.2003,21 patients were treated with LISS.There were 14 males and 7 females,with age from33 to 83 years(mean,57 years).The LISS plates were inserted beneath the periosteum through a small incision after closed reduction.The locking screws were inserted through stab incisions,and by monocortical fixation.Results:Almost all the patients achieved bone union during the follow up from 6 to 12 months(mean,10 months).2 patients had their implants removed.The function of the knee was evaluated according to Kolment score system based on both the subjective feeling and objective PE,and there were 13 excellent and 6 good and 1 acceptable and 1 poor,the good-excellent rate was 90.5%.There was no broken of screw or plate and no infection in all of the patients.Conclusions:The unique designed LISS has the advantages of protecting the blood supply of bone fragments and the periosteum,optimizing bone union and function recovery.LISS provides an alternative for treatment of distal femoral fractures.However,as a new designed system,not only conception but the procedure as well should be demanded strictly.